Aerosol generating device and microwave heating assembly thereof

Abstract

An aerosol generating device and its microwave heating assembly (100), the microwave heating assembly (100) comprising: an outer conductor unit (11) having a cylindrical shape and an open end (112) and a closed end (111); and an inner conductor unit (12) installed in the outer conductor unit (11), the inner conductor unit (12) including a first fixed end connected to the closed end (111) and a first free end extending to the open end (112) and having a groove (1231) recessed toward the closed end (111) on its surface facing the open end (112), the groove (1231) being for adjusting the energy field within the outer conductor unit (11), thereby realizing adjustment of the distribution of the energy field within the outer conductor unit (11) and increasing the amount of smoke exhaust.

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] The aerosol-generating device can use microwave heating to heat and atomize the aerosol-generating product, and the aerosol-generating device generally includes a microwave heating assembly, which can form a microwave interaction region and transmit microwave energy to the aerosol-generating product, and in this process, the microwave energy distribution field determines the microwave heating effect.

[0003] In the related art, a microwave heating assembly uses a probe structure to be inserted into an aerosol-generating product to heat the aerosol-generating product, but during heating, microwave energy heats the aerosol-generating product according to its specific distribution, which may result in low energy utilization efficiency or excessive energy dispersion, resulting in a small amount of smoke or a slow smoke emission rate from the aerosol-generating product. 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, The microwave heating assembly comprises: an outer conductor unit having a cylindrical shape and an open end and a closed end; an inner conductor unit disposed within the outer conductor unit, The inner conductor unit is a first fixed end connected to the closed end; and a first free end extending to the open end and having a groove recessed toward the closed end on the surface facing the open end, the groove being for adjusting the energy field within the outer conductor unit.

[0006] In some embodiments, the groove has a cylindrical shape.

[0007] In some embodiments, the depth of the groove is between 1 mm and 5 mm.

[0008] In some embodiments, the inner conductor unit comprises: a conductor post including a second fixed end and a second free end opposite to the second fixed end, the second fixed end being fixed to the closed end; a conductive disk coupled to the second free end, the groove being formed on a surface of the conductive disk facing away from the second fixed end.

[0009] In some embodiments, the conductive disk is integrally bonded to the conductive post or the conductive disk is in ohmic contact with the conductive post.

[0010] In some embodiments, the conductive post has a cylindrical shape, and the conductive disk has a disk shape, the diameter of which is larger than the diameter of the conductive post and smaller than the inner diameter of the outer conductor unit.

[0011] In some embodiments, the groove, the conductive disc, the conductive post and the outer conductor unit are coaxial.

[0012] In some embodiments, the conductive disc is made of a metallic material or has a conductive coating applied to its surface.

[0013] In some embodiments, the metallic material comprises an aluminum alloy or copper.

[0014] In some embodiments, the conductive coating comprises a silver coating or a gold coating.

[0015] In some embodiments, the microwave heating assembly further comprises a probe device disposed within the outer conductor unit; The probe device has an elongated shape, one end of which is fitted into the conductor post through the conductor disk and makes ohmic contact with the conductor post, and the other end of which extends to the open end.

[0016] In some embodiments, the microwave heating assembly further comprises a receiving seat attached to the open end, the receiving seat including a receiving portion for receiving an aerosol-generating product, the receiving portion being installed within the outer conductor unit, and the end of the receiving portion adjacent to the conductor disk extending into the recessed groove.

[0017] In some embodiments, there is a gap between the outer wall surface of the receiving portion and the inner wall surface of the groove.

[0018] In some embodiments, the microwave heating assembly further comprises a microwave supply unit; The microwave supply unit comprises: an outer conductor attached to the outer conductor unit and in ohmic contact with the outer conductor unit; an inner conductor disposed within the outer conductor and in ohmic contact with the inside of the outer conductor unit or the inner conductor unit; a medium layer located between the outer conductor and the inner conductor.

[0019] In some embodiments, a supply hole communicating the inside and the outside of the outer conductor unit is provided in the outer peripheral side wall of the outer conductor unit, the outer conductor is fitted into the supply hole and makes ohmic contact with the inner wall surface of the supply hole; The inner conductor extends through the supply hole into the outer conductor unit.

[0020] The present invention further provides an aerosol generating device, which comprises a microwave generating device and further comprises the above microwave heating assembly, said microwave heating assembly being connected to said microwave generating device. [Effects of the Invention]

[0021] By implementing the present invention, the present invention has the beneficial effect of adjusting the distribution of the energy field inside the outer conductor unit by opening a groove at the corresponding position of the first free end of the inner conductor unit, thereby collecting microwave energy and increasing the amount of smoke exhaust. [Brief explanation of the drawings]

[0022] 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 an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the vertical structure of the microwave heating assembly shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view of the vertical structure of the microwave heating assembly shown in FIG. 1 in an exploded state. [Figure 4] FIG. 4 is a schematic diagram showing the structure in which a probe device according to an embodiment of the present invention is engaged with an inner conductor unit. [Figure 5] FIG. 5 shows an energy distribution diagram obtained by testing a microwave heating assembly according to the present invention. [Figure 6] FIG. 6 is an energy distribution diagram obtained by a comparative experiment in which the structure of the microwave heating assembly according to the present invention was tested without the grooves. DETAILED DESCRIPTION OF THE INVENTION

[0023] 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.

[0024] 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 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 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.

[0025] 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.

[0026] The present invention provides an aerosol-generating device that uses microwaves to heat and atomize an aerosol-generating product to generate an aerosol for inhalation by a user. In some embodiments, the aerosol-generating product is a solid aerosol-generating product, such as a treated plant leaf product. As will be appreciated, in other embodiments, the aerosol-generating product may be a liquid aerosol-generating product.

[0027] The aerosol-generating device may include a microwave generator (not shown) and a microwave heating assembly 100. The microwave generator is capable of generating microwaves, and the microwave heating assembly 100 is connected to the microwave generator to generate microwaves and form a microwave field in its cavity, which can act on the aerosol-generating product to achieve microwave heating of the aerosol-generating product.

[0028] As shown in FIG. 1, in some embodiments, the overall shape of the microwave heating assembly 100 is approximately cylindrical, but it should be understood that the microwave heating assembly 100 is not limited to a cylindrical shape and may have other shapes such as a rectangular pillar or an elliptical pillar.

[0029] As shown in FIG. 2, the microwave heating assembly 100 may include an outer conductor unit 11, an inner conductor unit 12, a probe device 14, a receiving seat 13 and a microwave supply unit 2.

[0030] The outer conductor unit 11 has a cylindrical shape, a closed end 111 and an open end 112 opposite the closed end 111, and can define a semi-closed cavity, which has a cylindrical shape.

[0031] The inner conductor unit 12 is for adjusting the resonant frequency and microwave distribution in the cavity, and is coaxially installed in the cavity of the outer conductor unit 11. One end is connected to the sealed end 111 of the outer conductor unit 11 and makes ohmic contact with the end wall of the sealed end 111 to form the short-circuit end of the microwave heating assembly 100. The other end of the inner conductor unit 12 extends to the open end 112 of the outer conductor unit 11 and does not contact the outer conductor unit 11 to form the open-circuit end of the microwave heating assembly 100.

[0032] The receiving seat 13 is for loading the aerosol-generating product and is fixedly or removably attached to the open end 112 of the outer conductor unit 11, and when the aerosol-generating product is inserted into the receiving seat 13, it may be located in the area where the microwave field is mainly formed.

[0033] The probe device 14, which is used to adjust the microwave field distribution and microwave supply frequency, is installed coaxially within the cavity. The probe device 14 may be an independent structure, with one end extending from the inner conductor unit 12 to the open end 112 of the outer conductor unit 11 being coaxially fitted into the inner conductor unit 12, and the other end of the probe device 14 extending into the receiving seat 13, thereby being drilled into the interior of the aerosol-generating product.

[0034] The microwave supply unit 2 is for supplying microwaves generated by the microwave generator into the cavity (the supply method may include an electric supply method or a magnetic supply method, with the electric supply method being preferred), and the microwave supply unit 2 is removably attached to the outer wall of the outer conductor unit 11.

[0035] As shown in FIG. 3 , in some embodiments, the outer conductor unit 11 may include a conductive conductor side wall 113 and a conductor end wall 114. The conductor side wall 113 may be cylindrical and have opposite ends. The conductor end wall 114 is sealed to a first end of the conductor side wall 113 to form the sealed end 111, and the second end of the conductor side wall 113 has an open structure to form the open end 112, within which the receiving seat 13 can be mounted. A radially penetrating feed hole 115 is provided in the conductor side wall 113 adjacent to the conductor end wall 114, allowing the microwave feeder 2 to be inserted into the outer conductor unit 11. The diameter of the feed hole 115 is compatible with the outer diameter of the outer conductor 21 of the microwave feeder 2. An axially penetrating mounting hole 116 is further provided at the center position of the conductor end wall 114, and the mounting hole 116 is intended to fix one end of the inner conductor unit 12 to the conductor end wall 114 by mounting the inner conductor unit 12 therein.

[0036] In some embodiments, the outer conductor unit 11 may be integrally manufactured from a conductive metal material, preferably an aluminum alloy or copper. It should be understood that the outer conductor unit 11 is not limited to being integrally manufactured from a conductive material, and may be realized by plating a first conductive coating on the inner wall surface of a non-conductive cylinder. Materials for the first conductive coating may include gold, silver, conductive metal oxide, etc. Preferably, the first conductive coating is a silver coating or a gold coating.

[0037] 3, in some embodiments, the inner conductor unit 12 may include a conductor post 121 and a conductor disk 123 disposed above the conductor post 121. Preferably, the axes of the conductor post 121, the conductor disk 123, and the outer conductor unit 11 overlap each other.

[0038] The conductive rod 121 may have a cylindrical shape, with its end (bottom end) away from the open end 112 of the outer conductor unit 11 being a fixed end that is coaxially fixed to the conductive end wall 114 of the outer conductor unit 11, and its end (top end) close to the open end 112 being a free end that extends to the open end 112 of the outer conductor unit 11. The diameter of the conductive rod 121 is smaller than the inner diameter of the outer conductor unit 11. As will be understood, the conductive rod 121 is not limited to having a cylindrical shape, and may have other shapes such as a rectangular pillar, an elliptical pillar, a stepped pillar, an irregular pillar, etc. In addition, a screw 124 extending in the axial direction is further provided at the bottom end of the conductor column 121, and the screw 124 may be integrally connected to the conductor column 121, and is intended to fix the conductor column 121 to the conductor end wall 114 by attaching it to a mounting hole 116 located on the conductor end wall 114 of the outer conductor unit 11, thereby forming a reliable ohmic contact between the conductor column 121 and the outer conductor unit 11.

[0039] In some embodiments, the conductive post 121 may be integrally manufactured from a conductive metal material, preferably an aluminum alloy or copper. It should be understood that the conductive post 121 is not limited to being integrally manufactured from a conductive material, but may also be realized by plating a second conductive coating onto the outer surface of a non-conductive body. The second conductive coating is preferably a silver or gold plating.

[0040] The conductor column 121 is further provided with an insertion hole 122 corresponding to the supply hole 115, and the insertion hole 122 is for engaging with the microwave supply device 2 to realize microwave transmission. The insertion hole 122 is a blind hole, presenting a right cylindrical passage, and extending radially into the interior of the conductor column 121 along the outer circumferential wall of the conductor column 121. Preferably, the diameter of the insertion hole 122 matches the diameter of the inner conductor 22 of the microwave supply device 2.

[0041] The conductive disk 123 is for transmitting microwaves and can further increase the inductance and capacitance thereof to reduce the resonant frequency, which is advantageous for further reducing the cavity size. The conductive disk 123 may be disk-shaped, with a diameter larger than that of the conductive post 121, and coaxially disposed on the top end of the conductive post 121. The conductive disk 123 may be integrally coupled to the conductive post 121 or may be in ohmic contact with the conductive post 121.

[0042] In some embodiments, the conductor disk 123 may be integrally fabricated from a metallic material capable of conducting electricity, preferably an aluminum alloy or copper. It will be appreciated that the conductor disk 123 is not limited to being integrally fabricated from a conductive material, but may also be realized by plating a third conductive coating onto the outer surface of a non-conductive body. The third conductive coating is preferably a silver or gold plating.

[0043] 4, the conductive disk 123 has a recessed groove 1231 along the disk surface away from the conductive post 121, the recess 1231 being for adjusting the distribution of the energy field. During assembly, the lower part of the receiving seat 13 may be inserted into the recess 1231, and there is a gap between the lower part of the receiving seat 13 and the recess 1231.

[0044] In some embodiments, the groove 1231 is cylindrical and coaxial with the conductive disc 123, the diameter of the groove 1231 is greater than the outer diameter of the lower part of the receiving seat 13, and the depth thereof may be between 1 mm and 5 mm.

[0045] As can be seen, by providing the grooves 1231 and adjusting the depth of the grooves 1231, the distribution of the energy field can be adjusted, which allows microwave energy to be concentrated in the upper region of the aerosol-generating product, which is advantageous for rapid smoke evacuation when energy is limited, and can also solve / alleviate the contradictions between cigarette scorch, smoke evacuation rate and smoke volume after adjusting the distribution of the energy field. Secondly, since the grooves are formed in the conductor disk 123, the partial structure of the receiving seat 13 can be received in the conductor disk 123, which correspondingly reduces the height of the entire microwave heating assembly 100 and thereby reduces the size of the microwave heating assembly 100.

[0046] 3 and 4, the probe device 14 may include an elongated probe, the lower end of which is coaxially fitted into the conductor post 121 from the top end of the conductor post 121 through the conductor disk 122 to form good ohmic contact with the conductor post 121, and the upper end of the probe extends upward to the receiving seat 13. As will be understood, when the aerosol-generating product is extended into the receiving seat 13, a sheath may be fitted around the outer periphery of the upper end of the probe, and in this case, when microwaves are supplied to the microwave heating assembly 100, a microwave field will be formed around the portion of the probe device 14 which extends into the receiving seat 13, thereby heating the aerosol-generating product with microwaves.

[0047] The probe arrangement 14 may further include a temperature measuring element (not shown) disposed within the probe for monitoring and measuring the internal temperature of the aerosol-generating substrate inserted into the receiving seat 13 to facilitate temperature control. It will be appreciated that if no temperature measurement is required, the probe may be a solid structure, but if temperature measurement is required, the probe may be a hollow probe.

[0048] Optionally, the shape of the upper end of the probe may include one of a flat, spherical, elliptical, conical or frusto-conical shape, with a frusto-conical shape being preferred as this serves to increase the local electric field strength and subsequently accelerate the atomization rate of the aerosol-generating medium.

[0049] In some embodiments, the probe may be integrally fabricated from a metallic material capable of conducting electricity, preferably stainless steel, aluminum alloy, or copper. It should be understood that the probe need not be integrally fabricated from a conductive material, but may also be realized by plating a fourth conductive coating onto the outer surface of a non-conductive body. The fourth conductive coating is preferably a silver or gold plating.

[0050] 2 and 3, in some embodiments, the receiving seat 13 may include a receiving portion 131 and a fixing portion 132 integrally connected to the receiving portion 131. The receiving portion 131 is for receiving the aerosol-generating product, and the fixing portion 132 is axially closed to the open end 112 of the outer conductor unit 11 and for extending the receiving portion 131 into the cavity.

[0051] In some embodiments, the accommodating portion 131 may be cylindrical, and its outer diameter may be smaller than the inner diameter of the outer conductor unit 11. The accommodating portion 131 includes an axial chamber 1311 for accommodating an aerosol-generating product. The fixing portion 132 may be annular, and is integrally and coaxially connected to the accommodating portion 131. The fixing portion 132 may be coaxially closed to the open end 112 of the outer conductor unit 11, thereby coaxially positioning the accommodating portion 131 within the cavity. The fixing portion 132 includes an axial through-hole 1321 that communicates the accommodating chamber 1311 with the external environment, and the aerosol-generating product may be inserted into the accommodating chamber 1311 through the through-hole 1321.

[0052] In some embodiments, the receiving seat 13 further includes a number of vertically elongated positioning ribs 133. These positioning ribs 133 are uniformly spaced and installed around the circumferential surface of the wall of the receiving chamber 1311 and / or the through-hole 1321. Each positioning rib 133 extends in a direction parallel to the axis of the receiving seat 13. These positioning ribs 133 are used to hold the aerosol-generating product inserted in the receiving chamber 1311 and / or the through-hole 1321, while an air intake passage extending vertically is formed between every two adjacent positioning ribs 133, which facilitates ambient air being sucked into the bottom of the aerosol-generating product, entering the aerosol-generating product and heating it with microwaves to carry away the aerosol generated.

[0053] In some embodiments, the receiving seat 13 further includes a number of elongated support ribs 134, which are uniformly spaced and radially arranged on the bottom surface of the receiving chamber 1311. As will be understood, the support ribs 134 are used to support the aerosol-generating substrate, while also forming a number of radial second air intake passages. These second air intake passages are respectively connected to the first air intake passages, thereby facilitating the ambient air being drawn into the bottom of the aerosol-generating substrate, entering the aerosol-generating substrate and heating it with microwaves to carry away the generated aerosol.

[0054] In some embodiments, the housing seat 13 may be made of a low dielectric loss, high temperature resistant material, which may be a polymeric material (e.g., polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), etc.) or a ceramic material (e.g., glass, quartz glass, aluminum oxide, zirconium oxide, etc.).

[0055] 2 , in some embodiments, the microwave supply device 2 may be a coaxial connector, and is attached to the outer conductor unit 11 by being inserted through a supply hole 115 located on the periphery of the outer conductor unit 11. The microwave supply device 2 includes an outer conductor 21, an inner conductor 22 disposed within the outer conductor 21, and a medium layer 23 disposed between the inner conductor 22 and the outer conductor 21.

[0056] In some embodiments, the outer conductor 21 has a right cylindrical structure with openings at both ends, and when the microwave supply device 2 is attached to the outer conductor unit 11, the side wall of the outer conductor 21 makes ohmic contact with the inner wall surface of the supply hole 115 located in the outer conductor unit 11.

[0057] The inner conductor 22 has a needle-like structure with one end serving as a connection end 221 located inside the outer conductor 21 and the other end serving as a supply end 222 located outside the outer conductor 21. The connection end 221 is for connecting to a microwave generator to generate microwaves, and the connection method may be a coaxial connection method or a microstrip line connection method. The supply end 222 is adjacent to the inner conductor unit 12 when the microwave supply device 2 is attached to the outer conductor unit 11, and is inserted into the insertion hole 122 located in the conductor post 121 to achieve electrical or magnetic coupling and guide the microwave to the inner conductor unit 12.

[0058] In some other embodiments, the inner conductor 22 may also be L-shaped and may include a first segment that is perpendicular to the axis of the microwave heating assembly 100 and a second segment that is parallel to the axis of the microwave heating assembly 100. The first segment is located within the outer conductor 21 and is connected to one end of the second segment to extend outside the outer conductor 21. Preferably, the first segment and the second segment are integrally molded.

[0059] In this embodiment, the end of the second segment away from the first segment may be in direct ohmic contact with the conductor end wall 114 of the outer conductor unit 11, and there is no need to provide the insertion hole 122 in the conductor post 121. Of course, the position of the insertion hole may be changed to the conductor end wall 114 of the outer conductor unit 11, in which case the insertion hole is recessed in the conductor end wall 114 in the axial direction.

[0060] The role played by the recessed groove 1231 will be specifically explained below through comparative experiments. First, a comparison test was carried out on a microwave heating assembly 100 with a groove 1231 and a microwave heating assembly 100 without a groove 1231, where the depth of the groove 1231 was 4 mm and the diameter of the groove was 9.6 mm.

[0061] Referring to Figures 5 and 6, comparing the two energy field distribution maps, it can be seen that in Figure 6, the area occupied by the dark-colored area located around the probe device 14 in the bottom region of the aerosol-generating product is obviously reduced, and the energy (dark-colored area) is concentrated in the upper region of the aerosol-generating product (located above the bottom region), and when calculated from the test data, the energy absorption rate of the upper region of the aerosol-generating product is improved from 61% to 77%.

[0062] Next, comparative tests were conducted on microwave heating assemblies 100 with grooves 1231 of different depths, and it was found that when the depth of the grooves 1231 was 2 mm, the energy absorption rate of the upper region of the aerosol-generating product was 68%, and when the depth of the open grooves was 4 mm, the energy absorption rate of the upper region of the aerosol-generating product was reduced by 9%.

[0063] It can be seen from experiments that the adjustment of the energy distribution is mainly achieved by adjusting the depth of the groove 1231, and the influence of the diameter of the groove 1231 on the energy distribution is negligible. The deeper the groove 1231, the more energy is concentrated in the upper region of the aerosol-generating product.

[0064] In summary, the present invention provides a groove 1231 on the conductor disk 123 of the inner conductor unit 12, thereby realizing adjustment of the energy field distribution in the cavity, which allows microwave energy to be concentrated in the upper region of the aerosol-generating product, which is advantageous for rapid smoke evacuation when energy is limited, and also solves the problem of low smoke volume or slow smoke evacuation speed of the aerosol-generating product after adjusting the energy field distribution.

[0065] Next, grooves are drilled into the conductor disk 123 so that substructures of the aerosol-generating product can be accommodated in the conductor disk 123, thereby reducing the dimensions of the microwave heating assembly 100 by correspondingly lowering the overall height of the microwave heating assembly 100.

[0066] 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. [Explanation of symbols]

[0067] 100 Microwave Heating Assembly 11 Outer conductor unit 12 Inner conductor unit 13 Containment Seat 14 Probe equipment 2. Microwave supply device 111 Sealed end 112 Open end 113 Conductor sidewall 114 Conductor end wall 115 Supply hole 116 Mounting hole 121 Conductor Pillar 122 Insertion hole 123 Conductor disc 124 Screw 1231 Groove 131 Storage unit 132 Fixed part 133 Positioning rib 134 Support rib 1311 Containment Room 1321 Through hole 21 outer conductor 22 Inner conductor 23 Media layer 221 Connection end 222 Supply end

Claims

1. 1. A microwave heating assembly for use in an aerosol generating device, comprising: an outer conductor unit having a cylindrical shape and an open end and a closed end; an inner conductor unit disposed within the outer conductor unit, The inner conductor unit is a first fixed end connected to the closed end; a first free end extending to the open end and having a groove formed on a surface facing the open end that is recessed toward the closed end, the groove being for adjusting an energy field within the outer conductor unit; 10. A microwave heating assembly comprising:

2. 2. The microwave heating assembly of claim 1, wherein the groove has a cylindrical shape.

3. 2. The microwave heating assembly of claim 1, wherein the depth of the groove is between 1 mm and 5 mm.

4. The inner conductor unit is a conductor post including a second fixed end and a second free end opposite to the second fixed end, the second fixed end being fixed to the closed end; a conductive disk coupled to the second free end, the groove being formed on a surface of the conductive disk facing away from the second fixed end.

2. The microwave heating assembly of claim 1.

5. 5. The microwave heating assembly of claim 4, wherein the conductive disk is integrally bonded to the conductive post or the conductive disk is in ohmic contact with the conductive post.

6. 5. The microwave heating assembly according to claim 4, wherein the conductive rod has a cylindrical shape, and the conductive disk has a disk shape, the diameter of which is larger than the diameter of the conductive rod and smaller than the inner diameter of the outer conductor unit.

7. 5. The microwave heating assembly according to claim 4, wherein the groove, the conductive disk, the conductive post and the outer conductor unit are coaxial.

8. 5. The microwave heating assembly according to claim 4, wherein the conductor disk is made of a metal material or the surface of the conductor disk is coated with a conductive film.

9. 9. The microwave heating assembly of claim 8, wherein the metallic material comprises an aluminum alloy or copper.

10. 9. The microwave heating assembly of claim 8, wherein the conductive coating comprises a silver coating or a gold coating.

11. The microwave heating assembly further comprises a probe device disposed within the outer conductor unit; 5. The microwave heating assembly of claim 4, wherein the probe device has an elongated shape, one end of which is fitted into the conductor post through the conductor disk and makes ohmic contact with the conductor post, and the other end of which extends to the open end.

12. The microwave heating assembly of claim 4, further comprising a receiving seat attached to the open end, the receiving seat including a receiving portion for receiving an aerosol-generating product, the receiving portion being installed within the outer conductor unit, and the end of the receiving portion adjacent to the conductor disk extending into the recessed groove.

13. The microwave heating assembly according to claim 12, wherein a gap is provided between an outer wall surface of the accommodating portion and an inner wall surface of the groove.

14. The microwave heating assembly further comprises a microwave supply unit, the microwave supply unit comprising: an outer conductor attached to the outer conductor unit and in ohmic contact with the outer conductor unit; an inner conductor disposed within the outer conductor and in ohmic contact with the inside of the outer conductor unit or the inner conductor unit; 10. The microwave heating assembly of claim 1, further comprising a medium layer positioned between the outer conductor and the inner conductor.

15. a supply hole communicating the inside and the outside of the outer conductor unit is provided in an outer peripheral side wall of the outer conductor unit; the outer conductor is fitted into the supply hole and is in ohmic contact with an inner wall surface of the supply hole; 15. The microwave heating assembly of claim 14, wherein the inner conductor extends into the outer conductor unit through the supply hole.

16. An aerosol generating device, comprising: An aerosol generation device comprising a microwave generator and further comprising a microwave heating assembly according to any one of claims 1 to 15, said microwave heating assembly being connected to said microwave generator.

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