Aerosol generating device and microwave heating assembly thereof

Abstract

The aerosol generating device and microwave heating assembly (100) includes an outer conductor unit (11) having a cylindrical shape and including opposing open and closed ends (112 and 111), and a cavity located between the open and closed ends (112 and 111), an inner conductor unit (12) installed in the cavity, one end of which is connected to an end wall (115) of the closed end (111) and the other end of which extends to the open end (112), and a microwave supply unit ( The microwave supply unit (2) includes an outer conductor (21) attached to the outer conductor unit (11) and in ohmic contact with the outer conductor unit (11), and an inner conductor (22) installed within the outer conductor (21) and including a supply end (222) extending into the cavity to supply microwaves, an insertion hole (14) is provided inside the outer conductor unit (11) or in the inner conductor unit (12), and the supply end (222) extends into the insertion hole (14). By providing the insertion hole (14) on the inner conductor unit (12) or inside the outer conductor unit (11) for inserting the inner conductor (22) of the microwave supply unit (2), reliability of microwave supply is improved.

Description

[Technical Field]

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

[0002] In the related art, a microwave-heated aerosol generator includes a microwave heating assembly, which includes an outer conductor unit, an inner conductor unit, and a microwave supply unit. The microwave supply unit serves to transmit microwaves, and the supply end of the inner conductor of the microwave supply unit extends into the outer conductor unit and makes ohmic contact with the sidewall of the inner conductor unit, thereby meeting the demand for microwave supply.

[0003] However, during the heating process using a microwave heating assembly, as the temperature rises, the outer conductor unit, the inner conductor unit, and the inner conductor all undergo a certain degree of thermal expansion and contraction, which tends to result in gaps between the inner conductor and the inner conductor unit and / or the outer conductor unit, preventing microwaves from being effectively supplied to the inner conductor unit. Furthermore, the inner conductor, the inner conductor unit, and the outer conductor unit all have a certain tolerance range when machined (the dimensional deviation is generally 0.01 to 0.05 mm), which tends to result in gaps between the inner conductor and the inner conductor unit and / or the outer conductor unit, which increases the risk of poor contact and can easily cause microwave supply failure. 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 comprising: an outer conductor unit having a cylindrical shape and including an open end and a closed end opposite each other, and a cavity located between the open end and the closed end; an inner conductor unit disposed in the cavity, one end of which is connected to the end wall of the closed end and the other end of which extends to the open end; 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 including a feed end extending into the cavity to provide microwave feeding; An insertion hole is provided inside the outer conductor unit or in the inner conductor unit, and the supply end is inserted into the insertion hole.

[0006] In some embodiments, the supply end makes ohmic contact with the inner wall surface of the insertion hole.

[0007] In some embodiments, a first gap is formed between an end face of the supply end and a bottom of the insertion hole, and the first gap is 0.1 mm or less. A second gap is formed between the outer peripheral wall surface of the supply end and the inner peripheral wall surface of the insertion hole, and the second gap is 0.1 mm or less.

[0008] In some embodiments, the insertion hole is a blind hole.

[0009] In some embodiments, the insertion hole has a depth between 0.9 mm and 2.6 mm.

[0010] In some embodiments, the insertion hole has a cylindrical shape and a diameter between 0.65 mm and 0.9 mm.

[0011] In some embodiments, a supply hole communicating the cavity with the outside is provided in a side wall of the outer conductor unit, and the outer conductor is fitted into the supply hole.

[0012] In some embodiments, the inner conductor unit is coaxial with the outer conductor unit.

[0013] In some embodiments, the inner conductor unit includes a conductor post having a fixed end and a free end, the fixed end connected to the closed end and in ohmic contact with an end wall of the closed end, and the free end extending to the open end.

[0014] In some embodiments, the insertion hole is provided in the outer peripheral wall of the conductor column, faces the supply hole, and extends along the radial direction of the conductor column.

[0015] In some embodiments, the inner conductor unit further includes a boss coupled to the side wall of the conductor column, the boss protruding from the conductor column toward the supply hole, the insertion hole being formed in the boss and extending along the boss toward the end face of the supply hole in a direction away from the supply hole.

[0016] In some embodiments, the bottom of the insertion hole extends into the conductive post.

[0017] In some embodiments, the inner conductor has a straight line shape and extends into the insertion hole along a direction perpendicular to the axis of the conductor column.

[0018] In some embodiments, the insertion hole is formed in the end wall of the closed end.

[0019] In some embodiments, a boss is provided on the end wall of the closed end and protrudes toward the open end, and the insertion hole is provided in the boss.

[0020] In some embodiments, the inner conductor is L-shaped and includes a first segment and a second segment connected to the first segment; The end of the first segment away from the second segment is for generating microwaves, and the end of the second segment away from the first segment is the supply end.

[0021] In some embodiments, the insertion hole is provided in an inner peripheral side wall of the outer conductor unit.

[0022] In some embodiments, a boss protruding outward is further provided on the outer surface of the outer conductor unit, the insertion hole extends through the wall surface of the outer conductor unit toward the boss, the hole mouth is formed on the inner wall surface of the outer conductor unit, and the hole bottom extends into the boss.

[0023] In some embodiments, the inner conductor is U-shaped and includes a first segment, a second segment, and a third segment, the third segment being parallel to the first segment, both ends of the second segment being connected to the first segment and the third segment, respectively, the end of the first segment away from the second segment being for generating microwaves, and the end of the third segment away from the second segment being the supply end.

[0024] In some embodiments, the inner conductor unit further includes a conductive disk, which is axially connected to the free end, and the diameter of the conductive disk is larger than the diameter of the conductive column, and a gap is provided between the inner wall surface of the outer conductor unit.

[0025] In some embodiments, the inner conductor unit further includes a probe device having an elongated shape, one end of the probe device being inserted into the conductive disk and making ohmic contact with the conductive disk.

[0026] 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 substrate, the receiving portion being located within the cavity.

[0027] The present invention further provides an aerosol generating device comprising a microwave generating device, the aerosol generating device further comprising the microwave heating assembly described above, wherein the microwave supply unit is connected to the microwave generating device. [Effects of the Invention]

[0028] By implementing the present invention, the present invention has the beneficial effect of improving the reliability of microwave supply by providing an insertion hole on the inner conductor unit or inside the outer conductor unit into which the supply end of the inner conductor of the microwave supply unit is inserted. [Brief explanation of the drawings]

[0029] The invention will now be further described by way of example with reference to the drawings, in which: [Figure 1] FIG. 1 is a schematic diagram of the external structure of a microwave heating assembly according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the vertical structure of the microwave heating assembly shown in FIG. [Figure 3] FIG. 3 is an enlarged view of a structure in which a gap exists between the outer wall surface of the inner conductor and the inner wall surface of the insertion hole according to the first embodiment of the present invention. [Figure 4] FIG. 4 is an enlarged view of a structure in which a gap exists between the outer peripheral wall surface of the inner conductor and the inner peripheral wall surface of the insertion hole according to the first embodiment of the present invention. [Figure 5] FIG. 5 is a cross-sectional view of a vertical structure of a microwave heating assembly according to a second embodiment of the present invention. [Figure 6] FIG. 6 is an enlarged view of a structure according to a second embodiment of the present invention in which the inner conductor is in complete contact with the inner wall surface of the insertion hole. [Figure 7] FIG. 7 is an enlarged view of a structure according to a second embodiment of the present invention in which a gap exists between the supply end of the inner conductor and the bottom of the insertion hole. [Figure 8] FIG. 8 is a cross-sectional view of a vertical structure of a microwave heating assembly according to a third embodiment of the present invention. [Figure 9]FIG. 9 is an enlarged view of a structure according to a third embodiment of the present invention in which a gap exists between the outer wall surface of the third inner conductor and the inner wall surface of the third insertion hole. [Figure 10] FIG. 10 is a cross-sectional view of a vertical structure of a microwave heating assembly according to a fourth embodiment of the present invention. [Figure 11] FIG. 11 is an enlarged view of a structure in which an inner conductor according to a fourth embodiment of the present invention is inserted into an insertion hole located in a conductor end wall of an outer conductor unit. [Figure 12] FIG. 12 is a cross-sectional view of a vertical structure of a microwave heating assembly according to a fifth embodiment of the present invention. [Figure 13] FIG. 13 is an enlarged view of a structure in which an inner conductor according to a fifth embodiment of the present invention is inserted into an insertion hole provided in a boss of an outer conductor unit. [Figure 14] FIG. 14 is a cross-sectional view of a vertical structure of a microwave heating assembly according to a sixth embodiment of the present invention. [Figure 15] FIG. 15 is an enlarged view of a structure in which an inner conductor according to a sixth embodiment of the present invention is inserted into an insertion hole located in a conductor side wall of an outer conductor unit. [Figure 16] FIG. 16 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 1. [Figure 17] FIG. 17 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 2. [Figure 18] FIG. 18 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 3. [Figure 19] FIG. 19 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 4. [Figure 20] FIG. 20 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 5. [Figure 21]FIG. 21 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 6. [Figure 22] FIG. 22 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 7. [Figure 23] FIG. 23 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 8. [Figure 24] FIG. 24 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 9. [Figure 25] FIG. 25 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 10. [Figure 26] FIG. 26 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 11. [Figure 27] FIG. 27 is a diagram showing scattering parameters obtained when the microwave heating assembly according to Example 1 of the present invention was tested in Experiment 12. [Figure 28] FIG. 28 is a diagram showing scattering parameters obtained when the second microwave heating assembly according to Example 2 of the present invention was tested in Experiment 13. [Figure 29] FIG. 29 is a diagram showing scattering parameters obtained when the second microwave heating assembly according to Example 2 of the present invention was tested in Experiment 14. DETAILED DESCRIPTION OF THE INVENTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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 magnetic field in its cavity, which can act on the aerosol-generating product to achieve microwave heating of the aerosol-generating product.

[0035] Referring to FIG. 1, the microwave heating assembly 100 has an approximately cylindrical appearance. Naturally, the microwave heating assembly 100 is not limited to a cylindrical shape, but may have other shapes such as a rectangular pillar or an elliptical pillar.

[0036] 2 , the microwave heating assembly 100 may include an outer conductor unit 11, an inner conductor unit 12, a receiving seat 13, and a microwave supply unit 2. The outer conductor unit 11 is cylindrical, has a closed end 111 and an open end 112 opposite the closed end 111, and may define a semi-closed cavity, which has a cylindrical shape. The inner conductor unit 12 is used to adjust the resonant frequency and microwave distribution in the cavity. The inner conductor unit 12 is coaxially installed in the cavity of the outer conductor unit 11, with one end connected to the closed end 111 of the outer conductor unit 11 and in ohmic contact with the end wall of the closed end 111 to form a short-circuit end of the microwave heating assembly 100, and 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 an open-circuit end of the microwave heating assembly 100. 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 at a position where a microwave magnetic field is formed. The microwave supply unit 2 is for supplying microwaves generated by the microwave generator into the cavity (the supply method may include an electrical supply method or a magnetic supply method, with the electrical supply method being preferred), and the microwave supply unit 2 is removably attached to the outer wall of the outer conductor unit 11.

[0037] Referring to FIG. 2 , in this embodiment, the outer conductor unit 11 may include a conductive conductor side wall 114 and a conductor end wall 115. The conductor side wall 114 may be cylindrical and have opposite ends. The conductor end wall 115 is sealed to a first end of the conductor side wall 114 to form the sealed end 111, and the second end of the conductor side wall 114 has an open structure to form the open end 112, in which the receiving seat 13 can be mounted. In addition, a radially penetrating supply hole 116 is provided in the conductor side wall 114 adjacent to the conductor end wall 115, and the microwave supply unit 2 can be inserted into the outer conductor unit 11. The diameter of the supply hole 116 is compatible with the outer diameter of the outer conductor 21 of the microwave supply unit 2.

[0038] In this embodiment, the inner conductor unit 12 may include a conductor post 121 , a conductor disk 122 positioned above the conductor post 121 , and a probe device 123 fitted into the conductor disk 122 .

[0039] 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 coaxially connected to the conductive end wall 115 of the outer conductor unit 11, and its end (top end) close to the open end 112 extending 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.

[0040] An insertion hole 14 is provided on the outer peripheral side surface of the conductor post 121 facing the supply hole 116 of the outer conductor unit 11, and the insertion hole 14 is for inserting the inner conductor 22 of the microwave supply unit 2, thereby reducing the risk of poor contact between the inner conductor 22 and the conductor post 121. In this embodiment, the insertion hole 14 is a blind hole, presenting a right cylindrical passage, and extending into the interior of the conductor post 121 along the outer peripheral side surface of the conductor post 121 facing the supply hole 116 of the outer conductor unit 11.

[0041] Optionally, the insertion hole has a depth between 0.9 mm and 2.6 mm. Optionally, the insertion hole has a diameter between 0.65 mm and 0.9 mm.

[0042] The conductive disk 122 is used to transmit 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 122 may be disk-shaped, its diameter being larger than that of the conductive post 121, and it is coaxially installed on the top end (free end) of the conductive post 121. The conductive disk 122 may be integrally connected to the conductive post 121 or may be in ohmic contact with the conductive post 121. It should be understood that the conductive disk 122 is not a required component of the microwave heating assembly 100, but is applied to this embodiment as a preferred solution. If the conductive disk 122 is not present, microwave heating can also be achieved by the conductive post 121 and the probe device 123.

[0043] The probe device 123 is used to adjust the microwave magnetic field distribution and the microwave supply frequency, and can be an independent structure (i.e., the probe device 123 is detachably connected to the conductive disk 122 and the conductive post 121) that can be extracted from or inserted into the top end of the conductive disk 122 to form ohmic contact with the conductive disk 122. In this embodiment, the probe device 123 can include an elongated probe, the lower end of which is inserted from the top end of the conductive post 121 and coaxially fitted into the conductive disk 122 to form good ohmic contact with the conductive disk 122, and the upper end of the probe extends upward into the receiving seat 13. As will be understood, when microwaves are supplied to the microwave heating assembly 100, a microwave magnetic field is formed around the substructure of the probe device 123 that is extended into the receiving seat 13, and when an aerosol-generating product is extended into the receiving seat 13 and inserted into the upper end of the probe, microwave heating can be performed on the aerosol-generating product.

[0044] 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.

[0045] 2, in this embodiment, 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 is for extending the receiving portion 131 into the heating region 113 so that the probe device 123 is inserted into the receiving portion 131.

[0046] In this embodiment, 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 positioning the accommodating portion 131 coaxially in the heating region 113. 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.

[0047] In this embodiment, 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 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 into the receiving chamber 1311 and / or the through-hole 1321, and 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.

[0048] 2 to 4, in this embodiment, the microwave supply unit 2 may be a coaxial connector, and is attached to the outer conductor unit 11 by being inserted through a supply hole 116 located on the circumferential side of the outer conductor unit 11. The microwave supply unit 2 includes an outer conductor 21, an inner conductor 22 provided within the outer conductor 21, and a medium layer 23 interposed between the inner conductor 22 and the outer conductor 21.

[0049] In this embodiment, the outer conductor 21 has a right cylindrical structure with openings at both ends, and when the microwave supply unit 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 116 located in the outer conductor unit 11.

[0050] The inner conductor 22 has a straight needle-like structure and a right circular cylindrical shape, optionally with a diameter between 0.55 mm and 0.8 mm. The inner conductor 22 has opposite ends, one of which is a connection end 221 located inside the outer conductor 21, and the other end is 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 may be connected by a coaxial connection or a microstrip line. When the microwave supply unit 2 is attached to the outer conductor unit 11, the supply end 222 is adjacent to the inner conductor unit 12 and is inserted into the insertion hole 14 of the conductor post 121 to achieve electrical or magnetic coupling, thereby guiding microwaves to the inner conductor unit 12. As can be understood, the present invention uses a method in which insertion holes 14 are provided in the conductor posts 121 of the inner conductor unit 12 and engaged with the inner conductor 22 of the microwave supply unit 2. Even after the inner conductor 22 is extended into the insertion hole 14, there is a risk of a gap remaining between the outer wall surface of the inner conductor 22 and the inner wall surface of the insertion hole 14 due to issues such as processing accuracy and thermal expansion and contraction. As shown in FIG. 3 , the gap includes a first gap 241 formed between the supply end 222 of the inner conductor 22 and the bottom of the insertion hole 14, and a second gap 242 formed between the outer wall surface of the inner conductor 22 and the inner wall surface of the insertion hole 14. As shown in FIG. 4 , the second gap 242 is formed between the inner conductor 22 and the insertion hole 14.

[0051] However, if the gap is smaller than a certain range (0.1 mm or less), effective microwave supply can be achieved even if the inner conductor 22 and the conductor post 121 do not come into direct contact with each other. It may be understood that good microwave supply can be achieved if the first gap 241 and / or the second gap 242 are each 0.1 mm or less. In this case, the supply method is capacitive supply, which not only requires a simple structure but also ensures effective microwave supply.

[0052] Further, referring to Figures 5 and 6, these figures show a second microwave heating assembly 100a according to Example 2 of the present invention, and the difference between this example and Example 1 is that the inner conductor unit 12 and the microwave supply unit 2 are replaced by a second inner conductor unit 12a and a second microwave supply unit 2a.

[0053] As shown in Figure 5, in this embodiment, the second inner conductor unit 12a includes a second conductor column 121a, a second conductor disk 122a located above the second conductor column 121a, a second boss 15a provided on the outer side surface of the second conductor column 121a, and a second probe device 123a fitted into the second conductor disk 122a.

[0054] The second conductive rod 121a has a cylindrical shape, and its end (bottom end) away from the open end 112 of the outer conductor unit 11 is coaxially connected to the conductive end wall 115 of the outer conductor unit 11, and its end (top end) close to the open end 112 extends to the open end 112 of the outer conductor unit 11. The diameter of the second conductive rod 121a is smaller than the inner diameter of the outer conductor unit 11.

[0055] The second boss 15a protrudes toward the supply hole 116 along the outer peripheral side surface of the second conductive post 121a facing the supply hole 116 of the outer conductor unit 11, with the protruding direction perpendicular to the axial direction of the outer conductor unit 11, and at the same time, there is a gap between the second boss 15a and the supply hole 116. In this embodiment, the second boss 15a and the second conductive post 121a may be integrally coupled or may be in ohmic contact. Optionally, the shape of the second boss 15a includes a cylindrical shape or a rectangular shape.

[0056] A second insertion hole 14a for inserting the microwave supply unit 2 is provided on the end face of the second boss 15a facing the second supply hole 116a, and the second insertion hole 14a is a blind hole that has a right cylindrical passage and extends into the interior of the second boss 15a along the end face of the second boss 15a facing the supply hole 116a, with the bottom of the second insertion hole 14a located within the second boss 15a.

[0057] The second conductive disk 122a and the second probe device 123a may refer to the conductive disk 122 and the probe device 123 in the above-mentioned Example 1, and their shape, connection position, connection relationship and function are the same as those of the conductive disk 122 and the probe device 123 in the above-mentioned Example 1, and will not be described in detail here.

[0058] 5 to 7, in this embodiment, the second microwave supply unit 2a may be a coaxial connector, and is attached to the outer conductor unit 11 by being inserted into a supply hole 116 located on the circumferential side of the outer conductor unit 11. The second microwave supply unit 2a includes a second outer conductor 21a, a second inner conductor 22a provided in the second outer conductor 21a, and a second medium layer 23a interposed between the second inner conductor 2a2 and the second outer conductor 21a.

[0059] In this embodiment, the second outer conductor 21a has a right cylindrical structure with openings at both ends, and when the second microwave supply unit 2a is attached to the outer conductor unit 11, the side wall of the second outer conductor 21a makes ohmic contact with the inner wall surface of the supply hole 116 located in the outer conductor unit 11.

[0060] The second inner conductor 22a has a needle-like structure with one end serving as a connection end 221 located inside the second outer conductor 21a and the other end serving as a supply end 222 located outside the second outer conductor 21a. The connection end 221 is for connecting to a microwave generator. The supply end 222 is adjacent to the second inner conductor unit 12a when the second microwave supply unit 2a is attached to the outer conductor unit 11, and is inserted into the second insertion hole 14a of the second boss 15a to achieve electrical or magnetic coupling and thereby guide microwaves to the second microwave supply unit 2a.

[0061] 6, the second inner conductor 22a is completely inserted into the second insertion hole 14a and forms good ohmic contact with the second boss 15a, successfully supplying microwaves. Referring to FIG. 7, the second inner conductor 22a is not completely inserted into the second insertion hole 14a, and a first gap 241 exists between its supply end and the bottom of the second insertion hole 14a, but microwaves can still be supplied well.

[0062] Further, referring to Figures 8 and 9, these figures show a third microwave heating assembly 100b according to the third embodiment of the present invention, and the difference between this embodiment and the first embodiment is that the inner conductor unit 12 and the microwave supply unit 2 are replaced by a third inner conductor unit 12b and a third microwave supply unit 2b.

[0063] As shown in Figure 8, in this embodiment, the third inner conductor unit 12b includes a third conductor column 121b, a third conductor disk 122b located above the third conductor column 121b, a third boss 15b provided on the outer peripheral side surface of the third conductor column 121b, and a third probe device 123b fitted into the third conductor disk 122b.

[0064] The third conductive post 121b has a cylindrical shape, and its end (bottom end) away from the open end 112 of the outer conductor unit 11 is coaxially connected to the conductive end wall 115 of the outer conductor unit 11, and its end (top end) close to the open end 112 extends to the open end 112 of the outer conductor unit 11. The diameter of the third conductive post 121b is smaller than the inner diameter of the outer conductor unit 11.

[0065] The third boss 15b is formed so as to protrude into the supply hole 116 along the outer peripheral side surface of the third conductor pillar 121b relative to the supply hole 116 of the outer conductor unit 11, but a gap is maintained between the third boss 15b and the third conductor pillar 121b, and the third boss 15b and the third conductor pillar 121b may be integrally joined or may be in ohmic contact.

[0066] A third insertion hole 14b for inserting the microwave supply unit 2 is provided on the end face of the third boss 15b facing the supply hole 116, and the third insertion hole 14b is a blind hole that has a right cylindrical passage and extends into the interior of the third conductor pillar 121b along the end face of the third boss 15b facing the supply hole 116, with the bottom of the third insertion hole 14b being located within the third conductor pillar 121b.

[0067] In this embodiment, the length of the third insertion hole 14b is greater than the length of the insertion hole 14 in Example 1 and the length of the second insertion hole 14a in Example 2. As can be seen, by increasing the insertion depth of the inner conductor 22 of the microwave supply unit 2 into the third inner conductor unit 12b, the reliability of effective supply from the microwave supply unit 2 to the third inner conductor unit 12b can be further improved.

[0068] The third conductive disk 122b and the third probe device 123b may refer to the conductive disk 122 and the probe device 123 in the above-mentioned Example 1, and their shape, connection position, connection relationship and function are the same as those of the conductive disk 122 and the probe device 123 in the above-mentioned Example 1, and will not be described in detail here.

[0069] 8 and 9, in this embodiment, the third microwave supply unit 2b may be a coaxial connector, and is attached to the outer conductor unit 11 by being inserted through a supply hole 116 located on the circumferential side of the outer conductor unit 11. The third microwave supply unit 2b includes a third outer conductor 21b, a third inner conductor 22b provided in the third outer conductor 21b, and a third medium layer 23b interposed between the third inner conductor 2b2 and the third outer conductor 21b.

[0070] In this embodiment, the third outer conductor 21b has a right cylindrical structure with openings at both ends, and when the third microwave supply unit 2b is attached to the outer conductor unit 11, the side wall of the third outer conductor 21b makes ohmic contact with the inner wall surface of the supply hole 116 located in the outer conductor unit 11.

[0071] The third inner conductor 22b has a needle-like structure with one end serving as a connection end 221 located inside the third outer conductor 21b and the other end serving as a supply end 222 located outside the third outer conductor 21b. The connection end 221 is for connecting to a microwave generator. The supply end 222 is adjacent to the third inner conductor unit 12b when the third microwave supply unit 2b is attached to the outer conductor unit 11, and is inserted into the third insertion hole 14b of the third boss 15b to achieve electrical or magnetic coupling and thereby guide microwaves to the third microwave supply unit 2b.

[0072] Referring to Figure 9, the third inner conductor 22b is extended into the third insertion hole 14b, but a first gap 241 and a second gap 242 exist between the third inner conductor 22b and the third insertion hole 14b, and microwaves can still be supplied well.

[0073] Further, referring to Figures 10 and 11, these figures show a fourth microwave heating assembly 100c according to the fourth embodiment of the present invention, and the difference between this embodiment and the first embodiment is that the microwave heating assembly 100 and the microwave supply unit 2 are replaced by a fourth microwave heating assembly 100c and a fourth microwave supply unit 2c.

[0074] 10, the fourth microwave heating assembly 100c may have a substantially cylindrical appearance and include a fourth outer conductor unit 11c, a fourth inner conductor unit 12c, and a fourth receiving seat 13c. The fourth outer conductor unit 11c may have a cylindrical shape, a fourth closed end 111c, and a fourth open end 112c opposite the fourth closed end 111c, and may define a semi-closed fourth cavity, the fourth cavity having a right circular cylindrical shape. The fourth inner conductor unit 12c is installed in the fourth cavity of the fourth outer conductor unit 11c, and its axis overlaps the axis of the fourth outer conductor unit 11c. One end of the fourth inner conductor unit 12c is connected to the fourth sealed end 111c of the fourth outer conductor unit 11c and is in ohmic contact with the end wall of the fourth sealed end 111c to form a short-circuited end of the fourth microwave heating assembly 100c. The other end of the fourth inner conductor unit 12c extends to the fourth open end 112c of the fourth outer conductor unit 11c and is not in contact with the fourth outer conductor unit 11c to form an open-circuited end of the fourth microwave heating assembly 100c. A fourth receiving seat 13c is attached to the fourth open end 112c of the fourth outer conductor unit 11c.

[0075] In this embodiment, the fourth outer conductor unit 11c may include a conductive fourth conductor side wall 114c and a fourth conductor end wall 115c. The fourth conductor side wall 114c may be cylindrical and have opposite ends. The fourth conductor end wall 115c is sealed to a first end of the fourth conductor side wall 114c to form the fourth sealed end 111c. The second end of the fourth conductor side wall 114c has an open structure to form the fourth open end 112c, into which the fourth receiving seat 13c can be mounted. In addition, a fourth supply hole 116c may be formed radially through the fourth conductor side wall 114c at a location adjacent to the fourth conductor end wall 115c, for inserting the fourth microwave supply unit 2c into the fourth outer conductor unit 11c. The diameter of the fourth supply hole 116c is adapted to the outer diameter of the fourth outer conductor 21c of the fourth microwave supply unit 2c.

[0076] A fourth insertion hole 14c for inserting the fourth microwave supply unit 2c is further provided in the fourth conductor end wall 115c, and the fourth insertion hole 14c is a blind hole that is recessed along the fourth conductor end wall 115c, with the recessed direction parallel to the axial direction of the fourth outer conductor unit 11c, and the opening of the fourth insertion hole 14c facing the fourth opening end 112c of the fourth outer conductor unit 11c.

[0077] As shown in Figures 10 and 11, in this embodiment, the fourth inner conductor unit 12c includes a fourth conductor column 121c, a fourth conductor disk 122c located above the fourth conductor column 121c, and a fourth probe device 123c fitted into the fourth conductor disk 122c.

[0078] The fourth conductive post 121c has a cylindrical shape, and its end (bottom end) away from the fourth opening end 112c of the fourth outer conductor unit 11c is coaxially connected to the fourth conductor end wall 115c of the fourth outer conductor unit 11c, and its end (top end) close to the fourth opening end 112c extends to the fourth opening end 112c of the fourth outer conductor unit 11c. The diameter of the fourth conductive post 121c is smaller than the inner diameter of the fourth outer conductor unit 11c.

[0079] The fourth conductive disk 122c has a disk shape, a diameter larger than that of the fourth conductive post 121c, and is disposed on the top end of the fourth conductive post 121c, and may be integrally coupled to the fourth conductive post 121c or may be in ohmic contact with the fourth conductive post 121c.

[0080] The fourth probe device 123c may include a vertically elongated fourth probe, the lower end of which is inserted from the top end of the fourth conductive pillar 121c and removably and coaxially fitted into the fourth conductive disk 122c to form good ohmic contact with the fourth conductive disk 122c, and the upper end of the fourth probe extends upward into the fourth receiving seat 13c.

[0081] As shown in FIG. 10, the fourth accommodating seat 13c may refer to the accommodating seat 13 in the first embodiment, and its shape, connecting position, connecting relationship and function are the same as those of the accommodating seat 13 in the first embodiment, and will not be described in detail here.

[0082] 10 and 11, in this embodiment, the fourth microwave supply unit 2c may be a coaxial connector, and is attached to the fourth outer conductor unit 11c by being inserted through a fourth supply hole 116c located on the circumferential side of the fourth outer conductor unit 11c. The fourth microwave supply unit 2c includes a fourth outer conductor 21c, a fourth inner conductor 22c provided in the fourth outer conductor 21c, and a fourth medium layer 23c interposed between the fourth inner conductor 22c and the fourth outer conductor 21c.

[0083] In this embodiment, the fourth outer conductor 21c has a right cylindrical structure with openings at both ends, and when the fourth microwave supply unit 2c is attached to the fourth outer conductor unit 11c, the side wall of the fourth outer conductor 21c makes ohmic contact with the inner wall surface of the fourth supply hole 116c located in the fourth outer conductor unit 11c.

[0084] The fourth inner conductor 22c has an L-shaped needle-like structure and includes a first segment 223c that is perpendicular to the axis of the fourth outer conductor unit 11c and a second segment 224c that is parallel to the axis of the fourth outer conductor unit 11c, and the end of the first segment 223c that is away from the second segment 224c is a connection end 221 that is for generating microwaves by connecting to a microwave generator, and the end of the second segment 224c that is away from the first segment 223c is a supply end 222 that is for guiding microwaves to the fourth inner conductor unit 12c by being inserted into a fourth insertion hole 14c on the fourth conductor end wall 115c to achieve electrical or magnetic coupling.

[0085] Referring to FIG. 11, the fourth inner conductor 22c was completely inserted into the fourth insertion hole 14c and made good ohmic contact with the fourth outer conductor unit 11c, successfully supplying microwaves.

[0086] Further, referring to Figures 12 and 13, these figures show a fifth microwave heating assembly 100d according to the fifth embodiment of the present invention, and the difference between this embodiment and the fourth embodiment is that the fourth outer conductor unit 11c and the fourth microwave supply unit 2c are replaced by a fifth outer conductor unit 11d and a fifth microwave supply unit 2d.

[0087] As shown in FIG. 12, the fifth outer conductor unit 11d has a cylindrical shape, a fifth closed end 111d and a fifth open end 112d opposite to the fifth closed end 111d, and can define a semi-closed fifth cavity, which has a right circular cylindrical shape.

[0088] In this embodiment, the fifth outer conductor unit 11d may include a conductive fifth conductor side wall 114d and a fifth conductor end wall 115d. The fifth conductor side wall 114d may be cylindrical and have opposite ends. The fifth conductor end wall 115d is sealed to a first end of the fifth conductor side wall 114d to form the fifth sealed end 111d, and the second end of the fifth conductor side wall 114d has an open structure to form the fifth open end 112d. A fifth supply hole 116d is radially penetrating the fifth conductor side wall 114d adjacent to the fifth conductor end wall 115d, and the fifth microwave supply unit 2d can be inserted into the fifth outer conductor unit 11d through the fifth supply hole 116d. The diameter of the fifth supply hole 116d is compatible with the outer diameter of the fifth outer conductor 21d of the fifth microwave supply unit 2d.

[0089] The fifth conductor end wall 115d is further provided with a fifth boss 15d that protrudes in the direction of the fifth opening end 112d, with the protruding direction of the fifth boss 15d parallel to the axial direction of the fifth outer conductor unit 11d. A fifth insertion hole 14d for inserting the fifth microwave supply unit 2d is provided at the top of the fifth boss 15d. The fifth insertion hole 14d is a blind hole that is recessed along the top wall of the fifth boss 15d, with its opening facing the fifth opening end 112d of the fifth outer conductor unit 11d.

[0090] 12 and 13, in this embodiment, the fifth microwave supply unit 2d may be a coaxial connector, and is attached to the fifth outer conductor unit 11d by being inserted through a fifth supply hole 116d located on the circumferential side of the fifth outer conductor unit 11d. The fifth microwave supply unit 2d includes a fifth outer conductor 21d, a fifth inner conductor 22d provided in the fifth outer conductor 21d, and a fifth medium layer 23d interposed between the fifth inner conductor 22d and the fifth outer conductor 21d.

[0091] In this embodiment, the fifth outer conductor 21d has a right cylindrical structure with openings at both ends, and when the fifth microwave supply unit 2d is attached to the fifth outer conductor unit 11d, the side wall of the fifth outer conductor 21d makes ohmic contact with the inner wall surface of the fifth supply hole 116d located in the fifth outer conductor unit 11d.

[0092] The fifth inner conductor 22d has an L-shaped needle-like structure and includes a first segment 223d that is perpendicular to the axis of the fifth outer conductor unit 11d and a second segment 224d that is parallel to the axis of the fifth outer conductor unit 11d, and the end of the first segment 223d that is away from the second segment 224d is a connection end 221 that is connected to a microwave generator to generate microwaves, and the end of the second segment 224d that is away from the first segment 223d is a supply end 222 that is inserted into the fifth insertion hole 14 on the fifth boss 15 to achieve electrical or magnetic coupling and thereby guide microwaves to the fifth inner conductor unit 12.

[0093] Referring to FIG. 13, the fifth inner conductor 22d was completely inserted into the fifth insertion hole 14d and made good ohmic contact with the fifth boss 15d, successfully supplying microwaves.

[0094] Further, referring to Figures 14 and 15, these figures show a sixth microwave heating assembly 100e according to the sixth embodiment of the present invention, which differs from the fourth embodiment in that the fourth outer conductor unit 11c and the fourth microwave supply unit 2c are replaced by a sixth outer conductor unit 11e and a sixth microwave supply unit 2e.

[0095] As shown in FIG. 14, the sixth outer conductor unit 11e has a cylindrical shape, a sixth sealed end 111e and a sixth open end 112e opposite to the sixth sealed end 111e, and can define a semi-sealed sixth cavity, which has a right circular cylindrical shape.

[0096] In this embodiment, the sixth outer conductor unit 11e may include a conductive sixth conductor side wall 114e and a sixth conductor end wall 115e. The sixth conductor side wall 114e may be cylindrical and have opposite ends. The sixth conductor end wall 115e is sealed to a first end of the sixth conductor side wall 114e to form the sixth sealed end 111e, and the second end of the sixth conductor side wall 114e has an open structure to form the sixth open end 112e. A sixth supply hole 116e is radially penetrating the sixth conductor side wall 114e adjacent to the sixth conductor end wall 115e, and the sixth microwave supply unit 2e can be inserted into the sixth outer conductor unit 11e through the sixth supply hole 116e. The diameter of the sixth supply hole 116e is compatible with the outer diameter of the sixth outer conductor 21e of the sixth microwave supply unit 2e.

[0097] 14 and 15, the sixth conductor side wall 114e is provided with a sixth boss 15e that protrudes outward at a position around the sixth supply hole 116e (for example, above the sixth supply hole 116), and the sixth conductor side wall 114e is further provided with a sixth insertion hole 14e for inserting the sixth microwave supply unit 2e. The sixth insertion hole 14e is a blind hole that passes through the sixth conductor side wall 114e and extends toward the sixth boss 15e, with its hole bottom extending to the inside of the sixth boss 15e, and the extending direction of the sixth insertion hole 14e is perpendicular to the axial direction of the sixth outer conductor unit 11e.

[0098] 14 and 15, in this embodiment, the sixth microwave supply unit 2e may be a coaxial connector, and is attached to the sixth outer conductor unit 11e by being inserted through a sixth supply hole 116e located on the circumferential side of the sixth outer conductor unit 11e. The sixth microwave supply unit 2e includes a sixth outer conductor 21e, a sixth inner conductor 22e provided in the sixth outer conductor 21e, and a sixth medium layer 23e interposed between the sixth inner conductor 22e and the sixth outer conductor 21e.

[0099] In this embodiment, the sixth outer conductor 21e has a right cylindrical structure with openings at both ends, and when the sixth microwave supply unit 2e is attached to the sixth outer conductor unit 11e, the side wall of the sixth outer conductor 21e is in ohmic contact with the inner wall surface of the sixth supply hole 116e located in the sixth outer conductor unit 11e.

[0100] The sixth inner conductor 22e has a generally U-shaped needle-like structure and includes a first segment 223e perpendicular to the axis of the sixth outer conductor unit 11e, a second segment 224e parallel to the axis of the sixth outer conductor unit 11e, and a third segment 225e parallel to the first segment 223e. A partial structure of the first segment 223e is provided within the sixth outer conductor 21e, and the end of the first segment 223e away from the second segment 224e is the connecting end 221, which is for connecting to a microwave generator to generate microwaves. The third segment 225e is located outside the sixth outer conductor 21e, and when the sixth microwave supply unit 2e is attached to the sixth outer conductor unit 11e, the third segment 225e is extended into the sixth outer conductor unit 11e. The end of the third segment 225e away from the first segment 223e is a supply end 222, which is inserted into a sixth insertion hole 14e located in a sixth conductor side wall 114e of the sixth outer conductor unit 11e to achieve electrical or magnetic coupling and thereby supply microwaves. The second segment 224e serves as a connecting portion connecting the first segment 223e and the third segment 225e, and is connected to the first segment 223e and the third segment 225e, respectively, and the connection method may be integral connection.

[0101] Referring to FIG. 11, the sixth inner conductor 22e was completely inserted into the sixth insertion hole 14e and made good ohmic contact with the sixth outer conductor unit 11e, successfully supplying microwaves.

[0102] It should be noted that the sixth boss 15e is applied to this embodiment as a preferred solution and is not a necessary technical feature of this embodiment. If the sixth boss 15e is not provided, the sixth insertion hole 14e may be provided in the sixth conductor side wall 114e and recessed outward along the inner wall surface of the sixth conductor side wall 114e, with the bottom of the sixth insertion hole 14e located within the side wall of the sixth conductor side wall 114e.

[0103] As can be seen from Examples 1 to 6, the aerosol generator of the present invention has an insertion hole 14 located on the inner conductor unit 12 or inside the outer conductor unit 11. The specific location of the insertion hole 14 may be on the conductor post 121, the conductor end wall 115 of the outer conductor unit 11, or the conductor side wall 114 of the outer conductor unit 11. Alternatively, the insertion hole 14 may be located on the conductor post 121 or the boss (15a, 15b, 15d) on the conductor end wall 115 of the outer conductor unit 11. When the microwave supply unit 2 is attached to the outer conductor unit 11 and the inner conductor 22 of the microwave supply unit 2 is inserted into the insertion hole 14, the microwave can be capacitively transmitted even without contact between the inner conductor 22 and the insertion hole 14, thereby achieving better microwave supply and improving the reliability of the microwave supply. At the same time, the boss (15a, 15b, 15d) can deepen the insertion hole 14, further improving the reliability of the microwave supply.

[0104] Hereinafter, the role played by the insertion hole 14 in the present aerosol generating device will be specifically demonstrated with reference to Figs. 16 to 29 in combination with experimental data. In Experiment 1, a test was performed using the microwave heating assembly 100 of Example 1. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.76 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.03 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.01 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 16 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 1. As can be seen from FIG. 16, even if the inner conductor 22 and the insertion hole 14 do not make good contact, the scattering parameter S11 can reach −20.6390 dB.

[0105] In Experiment 2, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.76 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.03 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 17 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 2. As can be seen from FIG. 17, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −17.9160 dB.

[0106] In Experiment 3, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.76 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.03 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.1 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 18 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 3. As can be seen from FIG. 18, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −17.4776 dB.

[0107] In Experiment 4, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.75 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.025 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 19 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 4. As can be seen from FIG. 19, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −20.9355 dB.

[0108] In Experiment 5, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.75 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.03 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.1 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 20 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 5. As can be seen from FIG. 20, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −20.5002 dB.

[0109] In Experiment 6, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.78 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.04 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 21 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 6. As can be seen from FIG. 21, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −14.2081 dB.

[0110] In Experiment 7, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.8 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 2.5 mm, a second gap 242 of 0.05 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 22 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 7. As can be seen from FIG. 22, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −10.9962 dB.

[0111] In Experiment 8, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.8 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 1 mm, a second gap 242 of 0.05 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 23 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 8. As can be seen from FIG. 23, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −7.9685 dB.

[0112] In Experiment 9, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.75 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 1.2 mm, a second gap 242 of 0.025 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 24 shows a diagram of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 9. As can be seen from FIG. 24, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −9.6033 dB.

[0113] In Experiment 10, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.75 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 1.5 mm, a second gap 242 of 0.025 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 25 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 10. As can be seen from FIG. 25, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −13.0450 dB.

[0114] In Experiment 11, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.75 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 1.8 mm, a second gap 242 of 0.025 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.05 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 26 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 11. As can be seen from FIG. 26, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −14.6733 dB.

[0115] In Experiment 12, the microwave heating assembly 100 of Example 1 was still used for testing. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the insertion hole 14 was 0.75 mm, the inner conductor 22 was inserted into the insertion hole 14 to a depth of 1.8 mm, a second gap 242 of 0.025 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the insertion hole 14, and a first gap 241 of 0.03 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the insertion hole 14. FIG. 27 shows a graph of scattering parameters obtained by testing the microwave heating assembly 100 of Example 1 in Experiment 12. As can be seen from FIG. 27, in the microwave heating assembly 100 of Example 1, even though the inner conductor 22 and the insertion hole 14 did not make good contact, the scattering parameter S11 reached −15.33 dB.

[0116] In Experiment 13, a test was performed using the second microwave heating assembly 100a of Example 2. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the second insertion hole 14a was 0.75 mm, the inner conductor 22 was inserted into the second insertion hole 14a to a depth of 1.8 mm, a second gap 242 of 0.01 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the second insertion hole 14a, and a first gap 241 of 0.025 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the second insertion hole 14a. FIG. 28 shows a graph of scattering parameters obtained by testing the second microwave heating assembly 100a of Example 2 in Experiment 13. As can be seen from FIG. 28, in the second microwave heating assembly 100a of Example 2, even though the inner conductor 22 and the second insertion hole 14a did not make good contact, the scattering parameter S11 reached −17.7956 dB.

[0117] In Experiment 14, a test was performed using the second microwave heating assembly 100a of Example 2. In this experiment, the diameter of the inner conductor 22 was 0.7 mm, the diameter of the second insertion hole 14a was 0.75 mm, the inner conductor 22 was inserted into the second insertion hole 14a to a depth of 1.8 mm, a second gap 242 of 0.03 mm existed between the outer circumferential side surface of the inner conductor 22 and the inner circumferential wall surface of the second insertion hole 14a, and a first gap 241 of 0.025 mm existed between the feed end 222 of the inner conductor 22 and the bottom of the second insertion hole 14a. FIG. 29 shows a graph of scattering parameters obtained by testing the second microwave heating assembly 100a of Example 2 in Experiment 14. As can be seen from FIG. 29, in the second microwave heating assembly 100a of Example 2, even though the inner conductor 22 and the second insertion hole 14a did not make good contact, the scattering parameter S11 reached −13.8726 dB.

[0118] In summary, the above experiments 1 to 12 prove that even if the gap between the inner conductor 22 and the insertion hole 14 is within 0.1 mm, better microwave supply can be achieved, and as the gap becomes smaller, the microwave supply effect also gradually improves. When the gap between the inner conductor 22 and the insertion hole 14 is within 0.03 mm, microwaves can still be efficiently supplied to the microwave heating assembly 100.

[0119] Therefore, the gap between the inner conductor 22 and the insertion hole 14 is controlled to within 0.1 mm, preferably within 0.05 mm, and more preferably within 0.03 mm. Such a tolerance range is achievable in the machining process, and therefore this structure makes the actual machining and assembly of the microwave heating assembly 100 feasible and significantly improves the reliability of its microwave supply. In particular, while any material will deform to some extent in dimensions as the temperature changes, the present invention allows microwaves to still be supplied efficiently even when deformed.

[0120] Next, what can be proven from Experiments 13 and 14 is that if the insertion hole 14 is installed in the boss (15a, 15b, 15d) on the conductor column 121 or the conductor end wall 115 of the outer conductor unit 11, the supply effect is similar to the experimental results of Experiments 1 to 12 above, and the microwave supply unit 2 can effectively supply microwaves using a capacitive supply method.

[0121] 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]

[0122] 100 Microwave Heating Assembly 2 Microwave supply unit 11 Outer conductor unit 12 Inner conductor unit 13 Containment Seat 111 Sealed end 112 Open end 113 Heating area 114 Conductor sidewall 115 Conductor end wall 116 Supply hole 121 Conductor Pillar 122 Conductor disc 123 Probe Device 14 Insertion hole 131 Storage unit 132 Fixed part 133 Positioning rib 1311 Containment Room 1321 Through hole 21 outer conductor 22 Inner conductor 23 Media layer 221 Connection end 222 Supply end 241 First Gap 242 Second Gap 100a Second microwave heating assembly 2a Second microwave supply unit 12a Second inner conductor unit 121a Second conductor column 122a Second Conductor Disk 123a Second probe device 14a Second insertion hole 15a 2nd boss 21a Second outer conductor 22a Second inner conductor 23a 2nd media layer 100b Third microwave heating assembly 2b Third microwave supply unit 12b Third inner conductor unit 121b Third conductor pillar 122b Third Conductor Disk 123b Third Probe 14b Third insertion hole 15b 3rd boss 21b Third outer conductor 22b Third inner conductor 23b 3rd media layer 100c Fourth Microwave Heating Assembly 100c Fourth Microwave Heating Assembly 2c Fourth microwave supply unit 11c Fourth outer conductor unit 12c Fourth inner conductor unit 13c Detention Center 4 111c 4th closed end 112c 4th open end 114c Fourth conductor side wall 115c Fourth conductor end wall 116c 4th supply hole 14c 4th insertion hole 121c Fourth Conductor Pillar 122c 4th Conductor Disc 123c Fourth Probe 21c Fourth outer conductor 22c Fourth inner conductor 23c 4th media layer 223c 1st segment 224c Second Segment 100d 5th Microwave Heating Assembly 2d 5th microwave supply unit 11d Fifth outer conductor unit 111d 5th closed end 112d 5th opening end 114d 5th conductor side wall 115d 5th conductor end wall 116d 5th supply hole 14d 5th insertion hole 15d 5th boss 21d Fifth outer conductor 22d 5th inner conductor 23d 5th medium layer 223d First Segment 224d Second Segment 100e No. 6 Microwave Heating Assembly 11e 6th outer conductor unit 2e 6th microwave supply unit 111e 6th sealed end 112e 6th open end 114e 6th conductor sidewall 115e 6th conductor end wall 116e 6th supply hole 14e 6th insertion hole 15e 6th Boss 21e 6th outer conductor 22e 6th inner conductor 23e 6th media layer 223e 1st segment 224e Second Segment 225e 2nd segment

Claims

1. 1. A microwave heating assembly for use in an aerosol generating device, comprising: an outer conductor unit having a cylindrical shape and including an open end and a closed end opposite each other, and a cavity located between the open end and the closed end; an inner conductor unit disposed in the cavity, one end of which is connected to the end wall of the closed end and the other end of which extends to the open end; 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 including a feed end extending into the cavity to provide microwave feeding; A microwave heating assembly, characterized in that an insertion hole is provided inside the outer conductor unit or the inner conductor unit, and the supply end is inserted into the insertion hole.

2. The microwave heating assembly according to claim 1 , wherein the supply end is in ohmic contact with the inner wall surface of the insertion hole.

3. a first gap is provided between an end face of the supply end and a bottom of the insertion hole, the first gap being 0.1 mm or less; The microwave heating assembly according to claim 1, further comprising a second gap between the outer peripheral wall surface of the supply end and the inner peripheral wall surface of the insertion hole, the second gap being 0.1 mm or less.

4. 2. The microwave heating assembly of claim 1, wherein the insertion hole is a blind hole.

5. 2. The microwave heating assembly of claim 1, wherein the depth of the insertion hole is between 0.9 mm and 2.6 mm.

6. 2. The microwave heating assembly according to claim 1, wherein the insertion hole is cylindrical and has a diameter between 0.65 mm and 0.9 mm.

7. 2. The microwave heating assembly according to claim 1, wherein a supply hole communicating the cavity with the outside is provided in a side wall of the outer conductor unit, and the outer conductor is fitted into the supply hole.

8. 2. The microwave heating assembly of claim 1, wherein the inner conductor unit is coaxial with the outer conductor unit.

9. 8. The microwave heating assembly of claim 7, wherein the inner conductor unit includes a conductor post having a fixed end and a free end, the fixed end being connected to the closed end and in ohmic contact with an end wall of the closed end, and the free end extending to the open end.

10. The microwave heating assembly according to claim 9, wherein the insertion hole is provided in an outer peripheral wall of the conductor column, faces the supply hole, and extends along the radial direction of the conductor column.

11. The microwave heating assembly of claim 9, characterized in that the inner conductor unit further includes a boss coupled to a side wall of the conductor column, the boss protruding from the conductor column toward the supply hole, the insertion hole being formed in the boss and extending along the boss in a direction away from the supply hole toward an end face of the supply hole.

12. The microwave heating assembly according to claim 11, wherein the bottom of the insertion hole extends into the conductive column.

13. The microwave heating assembly according to any one of claims 10 to 12, characterized in that the inner conductor has a straight line shape and extends into the insertion hole along a direction perpendicular to the axis of the conductor column.

14. The microwave heating assembly of claim 1 , wherein the insertion hole is formed in an end wall of the closed end.

15. 2. The microwave heating assembly according to claim 1, wherein a boss is provided on an end wall of the closed end so as to protrude toward the open end, and the insertion hole is provided in the boss.

16. the inner conductor is L-shaped and includes a first segment and a second segment connected to the first segment; 16. A microwave heating assembly as described in claim 14 or 15, characterized in that the end of the first segment away from the second segment is for generating microwaves, and the end of the second segment away from the first segment is the supply end.

17. The microwave heating assembly according to claim 1 , wherein the insertion hole is provided in an inner peripheral side wall of the outer conductor unit.

18. The microwave heating assembly of claim 1, further comprising a boss protruding outward from the outer surface of the outer conductor unit, the insertion hole extending through the wall surface of the outer conductor unit toward the boss, the hole opening formed in the inner wall surface of the outer conductor unit, and the hole bottom extending into the boss.

19. 19. The microwave heating assembly of claim 17 or 18, wherein the inner conductor is U-shaped and includes a first segment, a second segment, and a third segment, the third segment being parallel to the first segment, both ends of the second segment being connected to the first segment and the third segment, respectively, the end of the first segment away from the second segment being for generating microwaves, and the end of the third segment away from the second segment being the supply end.

20. The microwave heating assembly of claim 9, wherein the inner conductor unit further includes a conductive disk axially connected to the free end, the diameter of the conductive disk being larger than the diameter of the conductive column, and a gap being provided between the conductive disk and the inner wall surface of the outer conductor unit.

21. The microwave heating assembly of claim 20, wherein the inner conductor unit further includes a probe device having a longitudinally elongated shape, one end of the probe device being inserted into the conductor disk and making ohmic contact with the conductor disk.

22. 2. The microwave heating assembly of claim 1, further comprising a receiving seat attached to the open end, the receiving seat including a receiving portion for receiving an aerosol-generating substrate, the receiving portion being located within the cavity.

23. An aerosol generating device comprising a microwave generating device, An aerosol generating device further comprising a microwave heating assembly according to any one of claims 1 to 22, wherein the microwave supply unit is connected to the microwave generator.

Images