CN117981911A

CN117981911A - Aerosol generating device and microwave heating assembly thereof

Info

Publication number: CN117981911A
Application number: CN202211422992.8A
Authority: CN
Inventors: 李东建; 梁峰; 杜靖; 蓝永海; 邓洋
Original assignee: Seymour International Holdings Ltd
Current assignee: Seymour International Holdings Ltd
Priority date: 2022-11-07
Filing date: 2022-11-07
Publication date: 2024-05-07
Also published as: WO2024098455A1

Abstract

The invention relates to an aerosol-generating device and a microwave heating assembly thereof, wherein the microwave heating assembly comprises: an outer conductor unit having a cylindrical shape and including a first open end and a first closed end opposite to the first open end; an inner conductor unit disposed within the outer conductor unit and defining a fixed space for confining an aerosol-generating article; the inner conductor unit comprises a first fixed end and at least one first free end; the first fixed end is combined with the wall surface at the periphery of the first opening end; the at least one first free end extends towards the direction of the first closed end; the inner conductor unit of the invention has the functions of adjusting the distribution and resonance frequency of the microwave field and fixing the aerosol-generating substrate, and is beneficial to improving the microwave energy absorption efficiency of the aerosol-generating product.

Description

Aerosol generating device and microwave heating assembly thereof

Technical Field

The invention relates to the field of electronic atomization, in particular to an aerosol generating device and a microwave heating component thereof.

Background

In the related art, a microwave-heated aerosol-generating device includes a receptacle for retaining and securing an aerosol-generating article. The housing is typically a non-metallic material with microwave losses. The energy generated by the microwaves is absorbed more or less during the microwave heating, so that the energy absorption of the aerosol-generating article is reduced, and the carbonization effect of the whole aerosol-generating article is deteriorated. However, if the carbonization effect of the tobacco medium is to be improved, the temperature is required to be increased, but the energy consumption is increased, the cost is correspondingly increased, and the service life of the appliance is shortened.

Furthermore, the aerosol-generating device of the related art further comprises a probe disposed within the cavity into which the aerosol-generating article is inserted. The probe and cavity are prone to residual dirt after user aspiration, presenting a cleaning problem; and the dirt remained on the probe can further influence the performance of a temperature measuring element arranged in the probe, reduce the accuracy of temperature measurement and temperature control, and influence the suction experience of a user on aerosol generating products.

Disclosure of Invention

The invention aims to provide an improved aerosol generating device and a microwave heating component thereof.

The technical scheme adopted for solving the technical problems is as follows: a microwave heating assembly configured for use in an aerosol-generating device, the microwave heating assembly comprising:

an outer conductor unit having a cylindrical shape and including a first open end and a first closed end opposite to the first open end;

an inner conductor unit disposed within the outer conductor unit and defining a fixed space for confining an aerosol-generating article;

The inner conductor unit comprises a first fixed end and at least one first free end; the first fixed end is combined with the wall surface at the periphery of the first opening end; the at least one first free end extends towards the first closed end.

In some embodiments, the fixing space penetrates the inner conductor unit in a longitudinal direction.

In some embodiments, the first fixed end is integrally bonded to the outer conductor unit, or the first fixed end is in ohmic contact with the outer conductor unit.

In some embodiments, the inner conductor unit is made of a metallic material; or the surface of the inner conductor unit is coated with a conductive coating.

In some embodiments, the inner conductor unit includes a conductor post having a cylindrical shape; the fixing space is formed at an inner periphery of the conductor post.

In some embodiments, the conductor post is coaxial with the outer conductor unit.

In some embodiments, the conductor post is cylindrical; the inner diameter of the conductor post is equal to or slightly larger than the outer diameter of the aerosol-generating article.

In some embodiments, the inner conductor unit includes:

a conductor portion including first and second surfaces facing away from each other, and a through passage penetrating the first and second surfaces; the first surface is combined with the wall surface at the periphery of the first opening end, and the penetrating channel is communicated with the first opening end;

at least one extension portion comprising a second fixed end and a second free end, the second fixed end being coupled to the second surface and the second free end extending in the direction of the first closed end;

wherein the inner peripheral wall of the conductor portion and the side wall of the at least one extension portion together define the fixing space.

In some embodiments, the conductor portion is cylindrical.

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

In some embodiments, the inner diameter of the conductor portion is equal to or slightly greater than the diameter of the aerosol-generating article.

In some embodiments, the inner peripheral side of the conductor part is provided with at least one first protrusion and/or at least one first groove for forming the first air intake gap.

In some embodiments, the direction in which the extension extends is parallel to the axial direction of the conductor portion.

In some embodiments, the extension is in a lengthwise arc-shaped configuration, a straight bar-shaped configuration, a curved configuration, or a combination of at least one of the foregoing.

In some embodiments, the at least one extension includes at least two extensions equally spaced apart in a circumferential direction of the conductor portion.

In some embodiments, the at least one extension comprises at least two extensions comprising at least two pairs of extensions of unequal length from pair to pair, the at least two pairs of extensions being alternately, uniformly distributed in the circumferential direction of the conductor portion.

In some embodiments, the microwave heating assembly further comprises a temperature sensing assembly for measuring temperature;

The inner conductor unit is provided with an accommodating hole for accommodating the temperature measuring component; the receiving hole extends from the first surface in a direction parallel to the axis of the conductor portion toward the second free end of one of all the extension portions.

In some embodiments, the temperature probe of the temperature measuring assembly is disposed at the second free end of the extension portion having the highest electric field intensity among all the extension portions.

In some embodiments, the inner conductor unit further comprises a hollowed-out portion provided on the conductor portion and/or the at least one extension portion.

In some embodiments, the hollowed-out portion includes a shape that is circular, square, or curved.

In some embodiments, the first closed end is provided with an inner end surface opposite the first open end;

The inner end surface is used for abutting against an article end surface of the aerosol-generating article; and when the product end face is propped against the inner end face, a second air inlet gap is formed between the product end face and the inner end face.

In some embodiments, the inner end surface is provided with at least one second protrusion and/or at least one second groove; the inner end surface and the product end surface form the second air inlet gap by the second bulge and/or the second groove.

In some embodiments, the first closed end is provided with at least one first through hole penetrating axially to communicate with the outside, and the inner end surface forms the second air inlet gap with the product end surface through the at least one first through hole.

In some embodiments, the first closed end is further provided with a recess recessed along a direction away from the first open end, the recess being opposite the first open end, and the recess having a diameter slightly greater than or equal to the diameter of the aerosol-generating article.

In some embodiments, the bottom of the recess is provided with at least one second through hole penetrating axially to communicate with the outside.

In some embodiments, the microwave heating assembly further comprises:

A probe device having one end coupled to an end face of the first closed end toward the first open end and the other end extending toward the first open end;

The inner conductor unit is disposed at an outer circumference of the probe device with a space therebetween.

In some embodiments, the microwave heating assembly further comprises:

A receiving seat which is cylindrical and is mounted on the inner conductor unit; the accommodating seat comprises a second closed end and a fourth open end which are opposite to each other; the second closed end is arranged between the at least one first free end and the first closed end; the fourth opening end extends to the first opening end and is communicated with the first opening end;

wherein the accommodating seat further comprises an accommodating cavity between the second closed end and the fourth open end; the receiving chamber is for receiving a carrier gas sol-generating product.

In some embodiments, the projection of the receptacle on the first closed end surrounds the outer perimeter of the projection of the inner conductor unit on the first closed end.

In some embodiments, the projection of the receptacle on the first closed end is provided at an inner periphery of the projection of the inner conductor unit on the first closed end.

In some embodiments, at least one clamping groove is formed on the side wall of the accommodating seat, and the clamping groove extends from the end surface of the fourth opening end to the second closed end; the accommodating seat is wholly or partially embedded on the at least one first free end by the at least one clamping groove.

In some embodiments, the microwave heating assembly further comprises a microwave feed unit; the microwave feed unit includes:

The outer conductor is cylindrical, embedded on the side wall of the outer conductor unit and in ohmic contact with the outer conductor unit;

an inner conductor which is in a shape of a straight line and is arranged in the outer conductor; the inner conductor extends into the outer conductor unit and is in ohmic contact with the inner conductor unit;

And a dielectric layer interposed between the inner conductor and the outer conductor.

The invention also constructs an aerosol generating device which comprises a microwave generating device and the microwave heating component; the microwave heating component is connected with the microwave generating device and in ohmic contact with the microwave generating device.

The implementation of the invention has the following beneficial effects: the inner conductor unit of the microwave heating component has the functions of adjusting the distribution and resonance frequency of the microwave field and fixing the aerosol generating substrate, and is beneficial to improving the microwave energy absorption efficiency of the aerosol generating product.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

Fig. 1 is a schematic view showing the external structure of a microwave heating assembly according to the present invention in example 1;

FIG. 2 is a longitudinal structural cross-sectional view of the microwave heating assembly of FIG. 1;

FIG. 3 is a longitudinal structural cross-sectional view of the microwave heating assembly of FIG. 1 in an exploded state;

fig. 4 is a schematic structural view of the inner conductor unit of the present invention in embodiment 1;

fig. 5 is a schematic view of the structure of the inner conductor unit in embodiment 2 of the present invention;

fig. 6 is a schematic view of the structure of the inner conductor unit in embodiment 3 of the present invention;

fig. 7 is a schematic view of the structure of the inner conductor unit in embodiment 4 of the present invention;

Fig. 8 is a schematic view of the structure of the inner conductor unit in embodiment 5 of the present invention;

fig. 9 is a schematic view of the structure of the inner conductor unit in embodiment 6 of the present invention;

fig. 10 is a schematic view of the structure of the inner conductor unit in embodiment 7 of the present invention;

Fig. 11 is a longitudinal structural sectional view of the inner conductor unit shown in fig. 10;

fig. 12 is a longitudinal structural sectional view of the microwave heating assembly of the invention in example 8;

Fig. 13 is a longitudinal structural sectional view of the microwave heating assembly of fig. 12 in an exploded state;

Fig. 14 is a longitudinal structural sectional view of the microwave heating assembly of the invention in example 9;

fig. 15 is a schematic view of a longitudinal structure of the microwave heating assembly shown in fig. 14 in an exploded state;

Fig. 16 is a longitudinal structural cross-sectional view of the microwave heating assembly of fig. 15.

Reference numerals: a first microwave heating assembly 1; an aerosol-generating article 2; an article end face 21; a first outer conductor unit 11; a first inner conductor unit 12; a microwave feed unit 13; a cavity 111; a conductor sidewall 112; a first end wall 113; a second end wall 114; a second intake gap 1111; a feed hole 1121; a through hole 1131; an inner end surface 1141; a second protrusion 1142; a conductor portion 121; an extension 122; a fixed space 123; a first surface 1211; a second surface 1212; a through passage 1213; a fixed end 1221; a free end 1222; an outer conductor 131; an inner conductor 132; a dielectric layer 133;

a second inner conductor unit 12a; a third inner conductor unit 12b; a fourth inner conductor unit 12c; a fifth inner conductor unit 12d; a hollowed-out portion 126; a sixth inner conductor unit 12e;

a seventh inner conductor unit 12f; a conductor post 127f; a second open end 1271f; a third open end 1272f; hollow channel 1273f;

A second outer conductor unit 11a; recess 1144; a second perforation 1145;

A second microwave heating assembly 1a; a first housing seat 14a; a probe device 15; a second closed end 141a; a fourth open end 142a; a card slot 143a; and a probe 151.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention, and do not indicate that the apparatus or element to be referred to must have specific directions, and thus should not be construed as limiting the present invention.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present invention and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

The present invention constructs an aerosol-generating device that heats an aerosol-generating article 2 (refer to fig. 3) using microwaves to atomize and generate an aerosol for inhalation or inhalation by a user. The aerosol-generating article 2 is a solid aerosol-generating article 2 such as a treated plant leaf article. It will be appreciated that the aerosol-generating article 2 may also be a liquid aerosol-generating article 2.

The aerosol-generating device may comprise a microwave generating device (not shown) and a first microwave heating assembly 1 (see fig. 1). The microwave generating means is adapted to generate microwaves which can be fed into the first microwave heating assembly 1 to form a microwave field within its cavity 111, the region of intense microwaves of the microwave field acting as a heating zone on a portion of the aerosol-generating article 2 arranged in the heating zone.

As shown in fig. 1, the overall shape of the first microwave heating unit 1 is substantially cylindrical, and of course, the first microwave heating unit 1 is not limited to cylindrical, and may have other shapes such as square, elliptical, and the like.

As shown in fig. 2, the first microwave heating assembly 1 may include a first outer conductor unit 11, a first inner conductor unit 12 disposed within the first outer conductor unit 11, and a medium (e.g., air), and further include a microwave feed unit 13 mounted on the first outer conductor unit 11. The first outer conductor unit 11 may define a cavity 111 as a place for microwave heating. The microwave feeding unit 13 feeds microwaves generated by the microwave generating device to the first outer conductor unit 11 and the first inner conductor unit 12, and the first inner conductor unit 12 adjusts the resonant frequency and the microwave distribution in the cavity 111, thereby realizing microwave heating of the aerosol-generating article 2.

As shown in fig. 2, the first outer conductor unit 11 has a cylindrical shape, and may define a semi-closed cylindrical cavity 111; of course, the cavity 111 is not limited to a cylindrical shape, and may have other shapes such as a square column, an elliptic column, and the like. Next, the first outer conductor unit 11 is further provided with a through hole 1131 communicating with the cavity 111, and the through hole 1131 may be slightly larger than or equal to the outer diameter of the aerosol-generating article 2, so that the aerosol-generating article 2 is inserted into the cavity 111.

In this embodiment, the first outer conductor unit 11 may be integrally made of an electrically conductive metal material, preferably an electrically conductive and thermally conductive high aluminum alloy or copper; the first conductive coating may be formed by plating the inner wall surface of the non-conductive cylinder with a first conductive coating, and the material of the first conductive coating may include gold, silver, copper, aluminum, conductive metal oxide (ITO, AZO, AGZO, FTO, etc.), conductive polymer, etc., preferably gold or silver. It will be appreciated that in order to reduce heat loss during heating and to solve the problem of scalding of the first outer conductor unit 11, it is preferable to use a method of plating the inner wall surface of the non-conductive cylinder with a first conductive coating to reduce heat loss caused by wall current.

As shown in fig. 3, the first outer conductor unit 11 may include a conductive conductor side wall 112, a first end wall 113, and a second end wall 114. The conductor side wall 112 is cylindrical, and has an opening structure at the top and bottom ends. The first end wall 113 is used for covering the top end of the conductor side wall 112, and the through hole 1131 is formed centrally on the first end wall 113 through the first end wall 113 in an axial direction, thereby forming a first open end of the first outer conductor unit 11. The second end wall 114 is used to close off the bottom end of the conductor side wall 112, forming a first closed end of the first outer conductor unit 11. As can be appreciated, when the aerosol-generating article 2 is inserted into the first outer conductor unit 11, its end face adjacent to the second end wall 114 (article end face 21) may abut against the end face of the second end wall 114 opposite said first end wall 113 (inner end face 1141) such that the aerosol-generating article 2 stands on the inner end face 1141.

In addition, to prevent the product end face 21 of the aerosol-generating product 2 from fully contacting the second end wall 114, resulting in an unobstructed airflow, a second air intake gap 1142 may be formed between the product end face 21 and the inner end face 1141; at the same time, the second air inlet gap 1142 may also prevent a substantial transfer of heat of the aerosol-generating article 2 to the first outer conductor unit 11 during heating. Optionally, one or more fine first perforations (see second perforations 1145 in embodiment 8) may be provided in the second end wall 114 that extend axially therethrough, the first perforations forming a second air intake gap 1142. At least one second protrusion 1143 and/or at least one second groove (not shown) may be further disposed on the inner end surface 1141, and the shapes of the second protrusions 1143 and/or the second grooves (not shown) may be the same or different, so that the second end wall 114 forms a second air inlet gap 1142 with the product end surface 21 through the second protrusions 1143 and/or the second grooves.

In addition, a feed-in hole 1121 is formed in the conductor side wall 112 near the first end wall 113, and the feed-in hole 1121 is configured for inserting the microwave feed-in unit 13 into the first outer conductor unit 11. The aperture of the feed hole 1121 is adapted to the outer diameter of the outer conductor 131 of the microwave feed unit 13.

As shown in fig. 3, the first inner conductor unit 12 is disposed in the cavity 111 of the first outer conductor unit 11, and the axial height thereof is slightly smaller than the axial height of the cavity 111 of the first outer conductor unit 11; the top of the first inner conductor unit 12 is combined with the first outer conductor unit 11 at the peripheral position of the through hole 1131, the bottom of the first inner conductor unit is suspended in the cavity 111, and a space exists between the bottom and the inner peripheral wall of the first outer conductor unit 11. By the design of the first inner conductor unit 12, the whole first microwave heating assembly 1 can be miniaturized, and the overall height of the cavity 111 can be effectively reduced.

The first inner conductor unit 12 forms a fixed space 123 within the cavity 111; the fixing space 123 may be inserted into the first outer conductor unit 11 so as to be inserted therein, and at the same time, an inner wall surface of the fixing space 123 may contact a circumferential surface of the aerosol-generating article 2 to prevent the aerosol-generating article 2 from being displaced, thereby serving to fix the aerosol-generating article 2.

Alternatively, the first inner conductor unit 12 may be integrally formed using a conductive metal material, preferably an aluminum alloy or copper. Of course, the first inner conductor unit 12 is not limited to being integrally formed of a conductive material, but may be formed by plating the outer surface of the non-conductive body with a second conductive coating. The second conductive coating is preferably a silver or gold plated coating.

As shown in fig. 4, the first inner conductor unit 12 is a non-totally enclosed structure including one conductor portion 121 and one extension portion 122 integrally coupled to the conductor portion 121.

Preferably, the conductor portion 121 has a cylindrical shape, and an inner diameter thereof is smaller than or equal to the diameter of the through hole 1131 of the first outer conductor unit 11, and is also adapted to the diameter of the aerosol-generating article 2, so as to perform the function of clamping and fixing the aerosol-generating article 2. The conductor part 121 comprises a first surface 1211 and a second surface 1212 which are opposite and have circular ring shapes, and a penetrating channel 1213 penetrating the first surface 1211 and the second surface 1212; the first surface 1211 is coaxially coupled to the first end wall 113 of the first outer conductor unit 11, and the through passage 1213 communicates with the through hole 1131 of the first outer conductor unit 11. Alternatively, the first surface 1211 may be integrally coupled to the first outer conductor unit 11, or the first surface 1211 may be in ohmic contact with the first outer conductor unit 11.

The extension portion 122 has an elongated arc-shaped structure, and extends from the second surface 1212 of the conductor portion 121 toward the second end wall 114 of the first outer conductor unit 11 in a direction parallel to the axis of the conductor portion 121. The extension 122 is arcuate in cross-section with its concave peripheral wall surface opposite the longitudinal axis of the first outer conductor element 11 and with its curvature adapted to the curvature of the outer peripheral surface of the aerosol-generating article 2.

It will be appreciated that since most of the aerosol-generating article 2 is cylindrical, the extension 122 of the present invention is configured in an arcuate configuration to match the shape of the aerosol-generating article 2 to conform to the shape of the aerosol-generating article 2, so that effective heating of the aerosol-generating article 2 can greatly improve the uniformity and range of heating of the aerosol-generating article 2. Of course, the extension 122 is not limited to be in an arc-shaped structure, but may be other structures, such as a straight bar-shaped structure, a curved structure, etc., and may be a combination of at least one of the arc-shaped structure, the straight bar-shaped structure, the curved structure, etc.

In this embodiment, the extension 122 includes a fixed end 1221 and a free end 1222, the fixed end 1221 is integrally coupled to the second surface 1212 of the conductor portion 121, and the free end 1222 extends in a direction away from the first surface 1211 with a small distance from the second end wall 114 of the first outer conductor unit 11. At the same time, there is also a space between the outer peripheral surface of the conductor portion 121, the peripheral surface of the extension portion 122, and the inner peripheral surface of the first outer conductor unit 11.

As can be appreciated, the inner peripheral wall surface of the conductor portion 121 and the concave peripheral wall surface of the extension portion 122 form the above-described fixing space 123 within the cavity 111. When the aerosol-generating article 2 is inserted into the cavity 111, the inner peripheral wall surface of the conductor portion 121 is fitted to the outer peripheral side surface of the aerosol-generating article 2 in the circumferential direction, and at the same time, the inner concave peripheral wall surface of the extension portion 122 is fitted to a part of the outer peripheral side surface of the aerosol-generating article 2 in the axial direction, so as to serve to restrict the position of the aerosol-generating article 2 and fix the aerosol-generating article 2.

In this embodiment, the first inner conductor unit 12 is further provided with a jack (not shown) into which one end of the microwave feeding unit 13 is inserted, and the jack is disposed on the conductor portion 121 or the extension portion 122 along the axial direction perpendicular to the first outer conductor unit 11, and the aperture thereof is opposite to the feeding hole 1121. The aperture of the insertion hole is matched with the diameter of one end of the microwave feed-in unit 13. Alternatively, the shape of the receptacle may be circular, square, oval or other polygonal shape.

In this embodiment, the first inner conductor unit 12 may be used not only for performing microwave heating of the aerosol-generating article 2 and fixing the aerosol-generating article 2, but also for providing an air channel and performing temperature measuring and controlling functions.

Preferably, at least one first protrusion (not shown) and/or at least one first groove (not shown) are provided on the inner circumferential wall surface of the conductor portion 121 of the first inner conductor unit 12, and the shapes of the first protrusions and/or the first grooves may be the same or different. The inner peripheral wall surface of the conductor portion 121 forms a first air intake gap between the outer peripheral surface of the aerosol-generating article 2 thereof by means of the first protrusions and/or the first grooves, facilitating air flow into the first outer conductor unit 11 when the aerosol-generating article 2 is being drawn.

A hole (not shown) for accommodating the temperature measuring element is formed by punching the conductor portion 121 in the vertical direction, and extends through the conductor portion 121 to a position where the electric field intensity is strongest in the bottom of the extension portion 122 (generally, the electric field intensity is strongest at the free end 1222). The temperature probe of the temperature measuring element is inserted into the position with the strongest electric field intensity to perform temperature measurement and control on the aerosol-generating product 2 during microwave heating, and the temperature probe is electrically connected with a temperature control and measurement circuit (not shown) located outside the first microwave heating assembly 1. Preferably, the first inner conductor unit 12 is preferably made of a metal material having high thermal conductivity, more preferably an aluminum alloy or copper material having high electrical and thermal conductivity; next, the inner wall surface of the conductor portion 121 and the inner concave peripheral wall surface of the extension portion 122 are preferably in close contact with the outer peripheral surface of the aerosol-generating article 2, thereby ensuring accuracy of temperature measurement and control.

It can be appreciated that, compared with the manner of relying on the probe 151 to achieve temperature measurement and control in the related art, the present invention avoids the problem of cleaning the probe 151 after the end of suction and improves the use experience of the user by achieving the function of temperature measurement and control by the first inner conductor unit 12. Next, the receiving hole is not an essential technical feature of the present first microwave heating assembly 1, which is applied as a preferred embodiment to the present embodiment. When the first inner conductor unit 12 is not needed to realize the functions of temperature measurement and temperature control, the accommodating hole can be optionally not formed; also in this case, the first inner conductor unit 12 may be formed by plating a surface (high temperature resistant plastic, ceramic, etc.) of a high temperature resistant nonmetallic body with a conductive coating (gold, silver, copper, aluminum, conductive metal oxide (ITO, AZO, AGZO, FTO, etc.), conductive polymer, etc.). The high temperature resistance is a temperature resistance capable of withstanding more than 250 °, and more particularly, more than 350 °.

As shown in fig. 3, the microwave feeding unit 13 may be a coaxial connector, and is mounted on the first outer conductor unit 11 from the feeding hole 1121 of the first outer conductor unit 11, and the feeding manner may be an electrical feeding manner or a magnetic feeding manner, and preferably an electrical feeding manner.

The microwave feed unit 13 includes a cylindrical outer conductor 131, an inner conductor 132 disposed in the outer conductor 131, and a dielectric layer 133 interposed between the inner conductor 132 and the outer conductor 131. When the microwave feed-in unit 13 is installed at the feed-in hole 1121, the inner conductor 132 thereof is in ohmic contact with the first inner conductor unit 12, and the outer conductor 131 thereof is in ohmic contact with the inner wall surface of the feed-in hole 1121.

In this embodiment, the outer conductor 131 has a cylindrical shape, and both ends thereof have an open structure. The inner conductor 132 is in a straight shape and is inserted into the insertion hole of the first inner conductor unit 12 in a direction perpendicular to the axis of the first outer conductor unit 11 to be in close contact with the first inner conductor unit 12, forming a good ohmic contact.

As will be appreciated, the related art generally employs a manner of providing a housing seat made of a non-metallic material in the first outer conductor unit 11 to secure the aerosol-generating article 2. However, the housing seat absorbs much microwave energy during microwave heating, which results in a corresponding decrease in the microwave absorption efficiency of the aerosol-generating article 2, and the carbonization effect thereof is deteriorated and the smoke output rate is also lowered.

The first inner conductor unit 12 in embodiment 1 of the present invention has the function of fixing the aerosol-generating article 2, so that the first outer conductor unit 11 may only include the first inner conductor unit 12, and the microwave energy fed into the first microwave heating assembly 1 may be substantially absorbed by the aerosol-generating article 2, thereby avoiding the technical problems caused by the accommodating seat in the related art, and further facilitating the improvement of the microwave energy absorption efficiency of the aerosol-generating article 2, the improvement of the carbonization effect after the whole suction of the aerosol-generating article 2, and the reduction of power consumption and cost.

In this embodiment, the first microwave heating assembly 1, when assembled with the aerosol-generating article 2, may have a resonant frequency within the range of 2.4-2.5 GHz.

Referring also to fig. 5, fig. 5 shows a second inner conductor unit 12a in embodiment 2 of the present invention. This embodiment is an improvement on the basis of embodiment 1, specifically by replacing the first inner conductor unit 12 of embodiment 1 described above with a second inner conductor unit 12a. The second inner conductor unit 12a has substantially the same structure as the first inner conductor unit 12 (the conductor portion 121 and the extension portion 122 have the same structure), and is different from the first inner conductor unit 12 in that the second inner conductor unit 12a includes two extension portions 122, and the two extension portions 122 are mirror-symmetrical along the axis of the conductor portion 121 and are distributed at equal intervals in the circumferential direction of the conductor portion 121.

Referring again to fig. 6, fig. 6 shows a third inner conductor unit 12b in embodiment 3 of the present invention. This embodiment is an improvement on the basis of embodiment 1, specifically by replacing the first inner conductor unit 12 of embodiment 1 described above with a third inner conductor unit 12b. The third inner conductor unit 12b has substantially the same structure as the first inner conductor unit 12 (the same structure of the conductor portion 121 and the extension portion 122), but differs therefrom in that the third inner conductor unit 12b includes two pairs of extension portions 122, and the two pairs of extension portions 122 are alternately and uniformly distributed in the circumferential direction of the conductor portion 121. In the two pairs of extension portions 122, the extension portions 122 of the same pair have equal lengths, and are distributed in the circumferential direction of the conductor portion 121 in a mirror symmetry manner along the axis of the conductor portion 121, and the extension portions 122 of different pairs have unequal lengths.

Referring also to fig. 7, fig. 7 shows a fourth inner conductor unit 12c in embodiment 4 of the present invention. This embodiment is an improvement on the basis of embodiment 1, specifically, the fourth inner conductor unit 12c is substituted for the first inner conductor unit 12 of embodiment 1 described above. The fourth inner conductor unit 12c is different from the first inner conductor unit 12 in that the axial length of the conductor portion 121 of the fourth inner conductor unit 12c is greater than the axial length of the conductor portion 121 of the first inner conductor unit 12, and the axial length of the extension 122 of the fourth inner conductor unit 12c is less than the axial length of the extension 122 of the first inner conductor unit 12. Meanwhile, the fourth inner conductor unit 12c includes four extension portions 122, which are all the same in shape and size, and which are equally spaced apart in the circumferential direction of the conductor portion 121.

Referring also to fig. 8, fig. 8 shows a fifth inner conductor unit 12d in embodiment 5 of the present invention. This embodiment is an improvement on the basis of embodiment 2, specifically, the fifth inner conductor unit 12d is substituted for the second inner conductor unit 12a of embodiment 2 described above. The fifth inner conductor unit 12d is different from the second conductor structure in that one of the two extending portions 122 of the fifth inner conductor unit 12d is provided with a square hollow portion 126, and the hollow portion 126 can be beneficial to enhancing the local microwave field strength of the inner conductor unit and improving the heating uniformity of the aerosol-generating article 2. It is understood that the shape of the hollowed-out portion 126 is not limited to the direction, and may also include a circular shape, a square shape, a curved shape, or other polygonal shapes.

Referring again to fig. 9, fig. 9 shows a sixth inner conductor unit 12e in embodiment 6 of the present invention. This embodiment is an improvement on the basis of embodiment 4, specifically, the sixth inner conductor unit 12e is substituted for the fourth inner conductor unit 12c of embodiment 4 described above. The sixth inner conductor unit 12e is different from the fourth inner conductor unit 12c in that a plurality of square hollowed-out portions 126 are provided on the conductor portion 121 in the sixth inner conductor unit 12e, and the hollowed-out portions 126 are distributed at equal intervals in the circumferential direction of the conductor portion 121.

It will be appreciated that when the extension 122 includes at least two, the fixing space 123 formed by the inner peripheral wall surface of the conductor portion 121 and the inner concave peripheral wall surface of the extension 122 can better fix the aerosol-generating article 2. Meanwhile, according to the change of the length and/or number of the extension parts 122, the distribution of the microwave field can be adjusted accordingly, and the length and/or number of the extension parts 122 can be set according to actual requirements. Secondly, when the inner conductor 132 structure is required to realize the temperature measurement and control function, the accommodating hole can be arranged in the extension portion 122 with stronger electric field intensity in the inner conductor 132 structure, so as to improve the accuracy of temperature measurement and control.

Referring again to fig. 10, fig. 10 shows a seventh inner conductor unit 12f in embodiment 7 of the present invention. This embodiment is an improvement on the basis of embodiment 1, specifically, the seventh inner conductor unit 12f is substituted for the first inner conductor unit 12 of embodiment 1 described above. The seventh inner conductor unit 12f differs from the first inner conductor unit 12 described above in that the seven inner conductor 132 structure includes a conductor post 127f coaxially disposed within the first outer conductor unit 11. The conductor column 127f has a cylindrical shape, an outer diameter of which is smaller than or equal to the diameter of the through hole 1131 of the first outer conductor unit 11, and an axial height of which is slightly smaller than that of the cavity 111 of the first outer conductor unit 11.

In this embodiment, as shown in fig. 11, the conductor post 127f includes opposed second and third open ends 1271f, 1272f. The second open end 1271f faces the through hole 1131 of the first outer conductor unit 11 and is coaxially coupled to the first end wall 113 of the first outer conductor unit 11. The second open end 1271f may be integrally bonded to the first outer conductor unit 11, or the second open end 1271f may be in ohmic contact with the first outer conductor unit 11. The third open end 1272f extends in the direction of the second end wall 114 of the first outer conductor unit 11 with a space maintained between it and the second end wall 114.

The hollow channel 1273f of the conductor pillar 127f corresponds to the above-mentioned fixing space 123, and the hollow channel 1273f is communicated with the through hole 1131, so that the aerosol-generating article 2 passes through the through hole 1131 and then extends into the hollow channel 1273f, and plays a role in limiting the aerosol-generating article 2. In addition, the inner diameter of the conductor pillar 127f is smaller than or equal to the diameter of the through hole 1131 of the first outer conductor unit 11, and is adapted to the outer diameter of the aerosol-generating article 2, so that the inner peripheral wall surface of the conductor pillar 127f is closely attached to the outer peripheral surface of the aerosol-generating article 2, so as to play a role in clamping and fixing the aerosol-generating article 2.

Alternatively, the conductor post 127f may be integrally formed of a conductive metal material, preferably aluminum alloy or copper. Of course, the conductor post 127f is not limited to being integrally formed of a conductive material, and may be formed by plating a second conductive coating on the outer surface of the non-conductive body. The second conductive coating is preferably a silver or gold plated coating.

Referring also to fig. 12, fig. 12 shows a second outer conductor unit 11a in embodiment 8 of the present invention. This embodiment is an improvement on the basis of embodiment 2, specifically by replacing the first outer conductor unit 11 of embodiment 1 described above with a second outer conductor unit 11a.

As shown in fig. 13, the second outer conductor unit 11a has substantially the same structure as the first outer conductor unit 11 of the above-described embodiment 1, and includes a conductive, straight cylindrical conductor side wall 112, a first end wall 113 sealed at the top end of the conductor side wall 112, and a second end wall 114 sealed at the bottom end of the conductor side wall 112; similarly, the conductor side wall 112 of the second outer conductor element 11a is provided with a radially extending feed-in opening 1121 near the first end wall 113, and the first end wall 113 is also provided with a centrally extending axial through-hole 1131.

The second outer conductor unit 11a is different from the first outer conductor unit 11 of the above-described embodiment 1 in that a recess 1144 is provided in an end surface (inner end surface 1141) of the second end wall 114 of the second outer conductor unit 11a opposite to the first end wall 113. As shown in fig. 13, the recess 1144 is a cylindrical channel, which is centrally recessed in the inner end surface 1141 in a direction away from the first end wall 113, and the notch thereof is opposite to the through hole 1131; the diameter of the recess 1144 may be slightly larger than or equal to the outer diameter of the aerosol-generating article 2. As the aerosol-generating article 2 is insertable into the recess 1144 after passing through the through-hole 1131 and the fixing space 123 in sequence, a portion of the aerosol-generating article 2 inserted into the recess 1144 is not easily heated to such an extent that condensate formation on the extension 122 of the inner conductor 132 structure is reduced during heating of the aerosol-generating article 2 and generation of aerosol, thereby further improving the cleanliness inside the second outer conductor unit 11 a. In addition, the second end wall 114 is also provided with one or more fine second perforations 1145 extending axially through the bottom of the recess 1144. The second through hole 1145 functions in the same manner as the first through hole 1142, and will not be described in detail.

Referring again to fig. 14, fig. 14 shows a second microwave heating assembly 1a in embodiment 9 of the invention. This embodiment is an improvement over the embodiment 2, with the specific difference that the second microwave heating assembly 1a replaces the solution of embodiment 2 carried by the second end wall 114 of the first outer conductor unit 11 by providing a first housing seat 14a for housing the aerosol-generating article 2. Meanwhile, the second microwave heating assembly 1a further comprises a probe device 15 for measuring and controlling temperature. It will be appreciated that the first housing seat 14a and the probe device 15 may be selected according to actual needs.

The first receiving seat 14a is made of a material with low microwave loss, which can reduce the generation of condensate when the extension 122 heats the aerosol-generating article 2 to generate aerosol, and further improve the cleanliness inside the cavity 111. Alternatively, the low microwave loss material may include PI, PEEK, PTFE or the like.

In this embodiment, as shown in fig. 14, the first housing seat 14a is mounted on the bottom of the second inner conductor unit 12a, and can cooperate with two extension portions 122 of the second inner conductor unit 12a to wrap the lower structure of the aerosol-generating article 2, and can also serve to support the aerosol-generating article 2.

Preferably, as shown in fig. 15 and 16, the first receiving seat 14a is substantially cylindrical and includes a second closed end 141a and a fourth open end 142a. The second closed end 141a is located between the extension 122 of the second inner conductor unit 12a and the second end wall 114 of the first outer conductor unit 11 with a gap maintained between the second end wall 114. The fourth open end 142a faces the through hole 1131 of the first outer conductor unit 11. Two locking grooves 143a into which the extending portions 122 of the second inner conductor units 12a are inserted are provided in the outer peripheral wall surface of the first housing seat 14 a; the two clamping grooves 143a are longitudinal arc-shaped channels and are mirror-symmetrical along the axis of the first accommodating seat 14 a; the two extend through the end surfaces of the first receiving seat 14a at the opening end and towards the second closed end 141a in a direction parallel to the axial direction of the first receiving seat 14a, and a space is reserved between the bottom wall surface of the clamping groove 143a and the second closed end 141 a.

When the first housing seat 14a is mounted on the bottom of the second inner conductor unit 12a, the two extending portions 122 are respectively engaged in the two clamping grooves 143a, and the side planes of the extending portions 122 in the circumferential direction and the bottom surfaces thereof are attached to the inner wall surfaces of the clamping grooves 143a, at this time, the two projected portions/complete overlapping of the first housing seat 14a and the second inner conductor unit 12a on the second end wall 114 of the first outer conductor unit 11 respectively. The inner concave wall surfaces of the two extending portions 122 and the inner peripheral surface of the first housing seat 14a together define a housing chamber with a closed bottom and a circumferential direction, the housing chamber housing the lower structure of the aerosol-generating article 2 therein, and the bottom of the housing chamber is attached to the article end surface 21 of the aerosol-generating article 2.

It is understood that the number and shape sizes of the clamping grooves 143a correspond to the number and shape sizes of the extension portions 122, respectively. Of course, when the first housing seat 14a needs to be combined with the third inner conductor unit 12b in embodiment 3, the first housing seat 14a may optionally be provided with the clamping groove 143a at a position corresponding to the relatively long pair of extension portions 122.

In this embodiment, the first receiving seat 14a may further include a plurality of elongated positioning ribs (not shown). The positioning ribs are uniformly arranged on the circumference of the inner wall surface of the accommodating cavity at intervals. Each of the positioning ribs extends in a direction parallel to the axis of the first housing seat 14 a. The ribs may be used in one aspect to grip the aerosol-generating article 2 inserted into the receiving cavity and in another aspect form a longitudinally extending first air inlet channel between each adjacent rib to facilitate ambient air being drawn into the bottom of the aerosol-generating article 2 and then into the aerosol-generating article 2 to carry away aerosol generated by microwave heating.

The first housing seat 14a may further include a plurality of elongated supporting ribs (not shown); the supporting ribs are uniformly and radially distributed on the bottom surface of the accommodating cavity at intervals. It will be appreciated that the support rib serves in one aspect to support the aerosol-generating article 2 and in the other direction to form a plurality of radial secondary air inlet channels. These second air inlet channels are in communication with the first air inlet channels, respectively, so as to facilitate the inhalation of ambient air to the bottom of the aerosol-generating article 2 and into the aerosol-generating article 2 to carry the aerosol generated by the microwave heating.

In this embodiment, the probe device 15 is used to implement a temperature measurement and control function, so as to improve the response time and the accuracy of temperature measurement of the temperature test, prevent the microwave field at the bottom end of the extension portion 122 of the second inner conductor unit 12a from being too strong, and prevent the overheating of the aerosol-generating article 2 due to untimely temperature control, and further produce a burnt smell, so as to further improve the heating uniformity of the aerosol-generating article 2. Secondly, since the bottom end of the extension portion 122 of the second inner conductor unit 12a has a stronger microwave field distribution, the combination of the extension portion 122 and the probe device 15 can prevent the microwave field at the probe device 15 from being too concentrated (too strong), thereby reducing the probability of the problem that the aerosol-generating article 2 is easy to burn or fire.

As shown in fig. 16, the probe device 15 includes a long hollow probe 151 and a temperature measuring element (not shown) located in the probe 151. The probe 151 is vertically disposed in the first outer conductor unit 11 and is integrally combined with or in ohmic contact with the first outer conductor unit 11; the extension 122 of the inner conductor 132 surrounds the outer periphery of the probe 151, and a space is kept between the inner concave wall surface of the extension 122 and the outer wall surface of the probe 151. Preferably, one end of the probe 151 is coaxially fixed to the second end wall 114 of the first outer conductor unit 11, and the other end thereof extends toward the through hole 1131 of the first outer conductor unit 11 through the end wall of the first housing seat 14a at the second closed end 141 a; the end of the probe 151 extending toward the through hole 1131 extends at most to be flush with the through hole 1131. The diameter of the probe 151 is smaller than the diameter of the aerosol-generating article 2, and the aerosol-generating article 2 is inserted onto the probe 151 and located at the outer periphery of the probe 151 when the aerosol-generating article 2 is extended into the cavity 111. The temperature measuring element may be electrically connected to a temperature control and measuring circuit (not shown) located outside the second microwave heating assembly 1a to monitor and feed back the temperature conditions inside the aerosol-generating article 2.

Alternatively, the shape of the end of the probe 151 extending toward the through hole 1131 includes a plane, sphere, ellipsoid, cone, or truncated cone shape; preferably in the shape of a truncated cone. As it may act to enhance the local field strength and thereby increase the rate of atomization of the aerosol-generating medium.

The probe 151 may be integrally formed from a conductive metallic material, preferably stainless steel, aluminum alloy or copper, in some embodiments. It will be appreciated that the probe 151 is not limited to being integrally formed of a conductive material, but may be formed by plating the outer surface of the non-conductive body with a third conductive coating. The third conductive coating may include gold, silver, copper, aluminum, conductive metal oxide, or conductive polymer; wherein the conductive metal oxide comprises ITO, AZO, AGZO, FTO materials; preferably a silver or gold plated coating.

The present invention also includes a third microwave heating assembly (not shown) in embodiment 10. This embodiment is an improvement on the basis of embodiment 9, specifically, the second housing seat 14b (not shown) is replaced with the first housing seat 14a of embodiment 9.

The second housing seat is mounted at the bottom of the second inner conductor unit 12a for completely wrapping the lower structure of the aerosol-generating article 2 and supporting the aerosol-generating article 2.

In this embodiment, the second receiving seat is cylindrical, and has an inner diameter larger than an outer diameter of the conductor portion 121, and a peripheral sidewall surrounding an outer periphery of a part/all of the extension portion 122. The second receptacle may include a third closed end and a fifth open end. The third closed end is adjacent to and maintains a gap with the second end wall 114 of the first outer conductor unit 11; the fifth opening end faces the through hole 1131 of the first outer conductor unit 11.

When the second housing seat is mounted at the bottom of the second inner conductor unit 12a, part/all of the extension portion 122 extends into the second housing seat, and the outer peripheral wall surface of the part of the extension portion 122 extending into the second housing seat and the bottom surface of the extension portion 122 are bonded to the inner wall surface of the second housing seat. At this time, the projection of the second housing seat on the second end wall 114 of the first outer conductor unit 11 is located at the outer periphery of the projection of the second inner conductor unit 12a on the second end wall 114.

The present invention also includes a fourth microwave heating assembly (not shown) in example 11. This embodiment is an improvement on the basis of embodiment 9, specifically, a third housing seat (not shown) is substituted for the first housing seat 14a of embodiment 9.

The third housing seat is mounted at the bottom of the second inner conductor unit 12a for completely wrapping the lower structure of the aerosol-generating article 2 and supporting the aerosol-generating article 2.

In this embodiment, the third housing seat is cylindrical, has an outer diameter smaller than the inner diameter of the conductor portion 121, and may be provided on the inner periphery of part/all of the extension portions 122. The third receptacle may include a fourth closed end and a sixth open end. The fourth closed end is adjacent to and maintains a gap with the second end wall 114 of the first outer conductor unit 11; the sixth open end is opposite to the through hole 1131 of the first outer conductor unit 11.

When the third housing seat is mounted at the bottom of the second inner conductor unit 12a, part/all of the extension portion 122 surrounds the outer periphery of the third housing seat, and the inner concave wall surface of the extension portion 122 surrounding the portion structure of the third housing seat is attached to the outer peripheral wall surface of the third housing seat. The inner wall surface of the fourth closed end is flush with the bottom of the extension 122. At this time, the projection of the third housing seat on the second end wall 114 of the first outer conductor unit 11 is located at the outer periphery of the projection of the second inner conductor unit 12a on the second end wall 114.

It is to be understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A microwave heating assembly for an aerosol-generating device, the microwave heating assembly comprising:

An inner conductor unit disposed within the outer conductor unit and defining a fixing space for fixing the aerosol-generating article;

2. A microwave heating assembly as in claim 1 wherein the fixed space extends longitudinally through the inner conductor unit.

3. The microwave heating assembly of claim 1, wherein the first fixed end is integrally bonded to the outer conductor unit or the first fixed end is in ohmic contact with the outer conductor unit.

4. The microwave heating assembly of claim 1, wherein the inner conductor unit is made of a metallic material; or the surface of the inner conductor unit is coated with a conductive coating.

5. The microwave heating assembly of claim 1, wherein the inner conductor unit comprises a cylindrical conductor post; the fixing space is formed at an inner periphery of the conductor post.

6. The microwave heating assembly of claim 5, wherein the conductor post is coaxial with the outer conductor unit.

7. The microwave heating assembly of claim 5, wherein the conductor post is cylindrical; the inner diameter of the conductor post is equal to or slightly larger than the outer diameter of the aerosol-generating article.

8. The microwave heating assembly of claim 1, wherein the inner conductor unit comprises:

9. The microwave heating assembly of claim 8, wherein the conductor portion is cylindrical.

10. A microwave heating assembly in accordance with claim 9, wherein the conductor portion is coaxial with the outer conductor unit.

11. A microwave heating assembly as in claim 9 wherein the conductor portion has an inner diameter equal to or slightly greater than a diameter of the aerosol-generating article.

12. A microwave heating assembly as in claim 8 wherein the inner peripheral side of the conductor portion is provided with at least one first projection and/or at least one first recess for forming a first air intake gap.

13. A microwave heating assembly in accordance with claim 8, wherein the extension extends in a direction parallel to the axial direction of the conductor portion.

14. The microwave heating assembly of claim 8, wherein the extension is in an elongated arcuate configuration, a straight bar configuration, a curved configuration, or a combination of at least one of the foregoing.

15. The microwave heating assembly of claim 8, wherein the at least one extension comprises at least two extensions equally spaced apart in a circumferential direction of the conductor portion.

16. The microwave heating assembly of claim 8, wherein the at least one extension comprises at least two extensions comprising at least two pairs of extensions of unequal length from pair to pair, the at least two pairs of extensions being alternately and uniformly distributed in a circumferential direction of the conductor portion.

17. The microwave heating assembly of claim 8, further comprising a temperature sensing assembly for measuring temperature;

18. The microwave heating assembly of claim 17, wherein the temperature probe of the temperature sensing assembly is disposed at a second free end of the extension having the highest electric field strength of all the extensions.

19. The microwave heating assembly of claim 8, wherein the inner conductor unit further comprises a hollowed-out portion provided on the conductor portion and/or the at least one extension portion.

20. The microwave heating assembly of claim 19, wherein the hollowed-out portion comprises a shape that is circular, square, or curved.

21. The microwave heating assembly of claim 1, wherein the first closed end is provided with an inner end surface opposite the first open end;

22. A microwave heating assembly as in claim 21 wherein the inner end face is provided with at least one second projection and/or at least one second recess; the inner end surface and the product end surface form the second air inlet gap by the second bulge and/or the second groove.

23. The microwave heating assembly of claim 21, wherein the first closed end has at least one first aperture extending axially therethrough for communication with an exterior, the inner end surface forming the second air intake gap with the article end surface via the at least one first aperture.

24. A microwave heating assembly in accordance with claim 21 wherein the first closed end is further provided with a recess recessed along a direction away from the first open end, the recess being opposite the first open end and having a diameter slightly greater than or equal to a diameter of the aerosol-generating article.

25. The microwave heating assembly of claim 24, wherein a bottom of the recess is provided with at least one second perforation extending axially therethrough to communicate with the outside.

26. The microwave heating assembly of claim 1, further comprising:

27. The microwave heating assembly of claim 1, further comprising:

wherein the accommodating seat further comprises an accommodating cavity between the second closed end and the fourth open end; the receiving cavity is for carrying the aerosol-generating article.

28. The microwave heating assembly of claim 27, wherein the projection of the receptacle onto the first closed end surrounds the outer perimeter of the projection of the inner conductor unit onto the first closed end.

29. The microwave heating assembly of claim 27, wherein the projection of the receptacle onto the first closed end is disposed on an inner periphery of the projection of the inner conductor unit onto the first closed end.

30. The microwave heating assembly of claim 27, wherein the receptacle has at least one slot in a sidewall thereof, the slot extending through an end of the fourth open end toward the second closed end; the accommodating seat is wholly or partially embedded on the at least one first free end by the at least one clamping groove.

31. The microwave heating assembly of claim 1, further comprising a microwave feed unit; the microwave feed unit includes:

32. An aerosol-generating device comprising a microwave generating device, further comprising the microwave heating assembly of any one of claims 1 to 31; the microwave heating component is connected with the microwave generating device and in ohmic contact with the microwave generating device.