Microwave heating assembly and aerosol generating device

Abstract

The invention discloses a microwave heating assembly and an aerosol generating device. The microwave heating assembly comprises a cylindrical outer conductor unit, an inner conductor unit and a sealing element, the outer conductor unit is provided with an open end, a closed end and a cavity formed between the open end and the closed end of the outer conductor unit; the inner conductor unit is arranged in the cavity, the fixed end of the inner conductor unit is connected with the closed end of the outer conductor unit, and the free end of the inner conductor unit extends towards the open end of the outer conductor unit; a groove is formed in one surface of the free end of the inner conductor unit, and the groove is recessed towards the direction of the closed end of the outer conductor unit; and the sealing element is arranged in the cavity and is in sealing connection with the outer conductor unit. At least part of the aerosol generating substrate is contained in the groove, the height of the cavity can be reduced, and miniaturization of the aerosol generating device is facilitated. And the sealing element arranged in the cavity can be used for intercepting the condensate in the cavity, so that the risk that the condensate flows to the bottom of the cavity to pollute other important components is reduced.

Description

Technical Field

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

[0002] An aerosol generating device can heat and atomize an aerosol forming substrate by means of microwave heating. The aerosol generating devices in the prior art generally include a microwave heating component, which usually includes an outer conductor unit, a resonant cavity defined by the outer conductor unit, and an inner conductor unit disposed in the resonant cavity. The volumes of the inner conductor unit and the outer conductor unit will affect the designed resonant frequency of the resonant cavity. The defect of the prior art is that in order to make the resonant cavity reach a compliant designed resonant frequency (usually between 2.4 GHz and 2.5 GHz), the designed volume of the cavity is relatively large, which is not conducive to the miniaturization of the aerosol generating device. In addition, the outer wall of the resonant cavity is often at a relatively low temperature, and the aerosol in the resonant cavity is likely to form condensate when it encounters the relatively low-temperature outer wall. The condensate flows downward into the core position at the bottom of the resonant cavity, causing pollution and affecting the normal operation of the device. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved microwave heating component and an aerosol generating device in view of at least one defect existing in the above prior art.

[0004] The technical solution adopted by the present invention to solve its technical problems is: to provide a microwave heating component, which includes a cylindrical outer conductor unit, an inner conductor unit and a seal; the outer conductor unit has an open end and a closed end, and a cavity formed between the open end and the closed end of the outer conductor unit; the inner conductor unit is disposed in the cavity, and it has a fixed end and a free end. The fixed end of the inner conductor unit is connected to the closed end of the outer conductor unit, and the free end of the inner conductor unit extends towards the open end of the outer conductor unit; a groove is formed on one surface of the free end of the inner conductor unit, and the groove is recessed towards the direction of the closed end of the outer conductor unit; the seal is disposed in the cavity and is in sealed connection with the outer conductor unit.

[0005] Preferably, the microwave heating component further includes a sensor disposed outside the cavity, and a first through hole is provided on the outer conductor unit, and the first through hole conducts air communication between the sensor and the cavity.

[0006] Preferably, the outer conductor unit includes a first side wall and a first bottom wall that are connected to each other, and the first side wall and the first bottom wall together define the cavity; the first through hole is located on the first side wall.

[0007] Preferably, an extension protruding away from the cavity is formed on the outer conductor unit, and the first through hole penetrates through the extension.

[0008] Preferably, a receiving area for accommodating the aerosol generating substrate is defined between the groove bottom surface of the groove and the open end of the outer conductor unit, and the first through hole conducts air communication between the sensor and the receiving area.

[0009] Preferably, the microwave heating assembly further includes a fixing frame for accommodating the aerosol generating substrate; the seal is disposed between the fixing frame and the groove; a second through hole is formed in the seal, and the second through hole corresponds to the first through hole.

[0010] Preferably, the seal is in a cylindrical shape and includes a second side wall and a second bottom wall that are joined; the second side wall abuts against the outer conductor unit;

[0011] And / or, at least part of the seal is disposed in the groove.

[0012] Preferably, the microwave heating assembly further includes a probe disposed in the cavity;

[0013] The probe is in a longitudinal shape, one end of which penetrates into the seal and the inner conductor unit, and the other end extends toward the open end of the outer conductor unit. Preferably, the inner conductor unit includes a conductor column and a conductor disk; the conductor column includes a fixed end and a free end, the fixed end of the conductor column is connected to the closed end of the outer conductor unit; the conductor disk is connected to the free end of the conductor column, and the end of the conductor disk away from the conductor column forms the free end of the inner conductor unit; the groove is formed on the surface of the conductor disk facing away from the conductor column.

[0014] The present invention also provides an aerosol generating device, which includes a microwave generating unit and the microwave heating assembly according to any one of the above, and the microwave heating assembly further includes a microwave feeding unit connected to the outer conductor unit, and the microwave feeding unit is connected to the microwave generating unit and feeds the microwave generated by the microwave generating unit into the cavity.

[0015] The present invention has at least the following beneficial effects: The aerosol generating substrate is at least partially accommodated in the groove, which can reduce the height of the cavity, thereby facilitating the miniaturization of the aerosol generating device. The seal disposed in the cavity can be used to intercept the condensate in the cavity, thereby reducing the risk of the condensate flowing to the bottom of the cavity and contaminating other important components. Description of the Drawings

[0016] The present invention will be further described below in conjunction with the drawings and embodiments, in the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of a microwave heating component according to an embodiment of the present invention;

[0018] Figure 2 is Figure 1 a top view structural schematic diagram of;

[0019] Figure 3 is Figure 2 an A-A cross-sectional view of;

[0020] Figure 4 is a schematic diagram for comparing the structures of a microwave heating component in the prior art and a microwave heating component according to an embodiment of the present invention;

[0021] Figure 5 is Figure 1 an exploded structural schematic diagram of the illustrated microwave heating component. Detailed Embodiments

[0022] For a clearer understanding of the technical features, objectives, and effects of the present invention, the detailed embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that "first" and "second" are only for facilitating the distinction between two components and should not be construed as a limitation to the present invention.

[0023] The aerosol generating device provided by the present invention can utilize microwave heating to heat the aerosol generating substrate 2 to atomize and generate an aerosol for the user to inhale. In some embodiments, the aerosol generating substrate 2 is a solid aerosol generating substrate 2 such as a processed plant leaf product. It can be understood that in other embodiments, the aerosol generating substrate 2 can also be a liquid aerosol generating substrate 2.

[0024] The aerosol generating device may include a microwave generating device (not shown) and a microwave heating component 1. The microwave generating device can generate microwaves. When the device is in use, the aerosol generating substrate 2 is loaded into the microwave heating component 1, and the microwave heating component 1 is connected to the microwave generating device to access microwaves, forming a microwave field, which can act on the aerosol generating substrate 2 to achieve microwave heating of it.

[0025] As Figures 1 to 3 shown, a microwave heating component 1 according to an embodiment of the present invention includes an outer conductor unit 10, an inner conductor unit 11, and a seal 12. The outer conductor unit 10 is cylindrical. The outer conductor unit 10 has an open end and a closed end, and a cavity 100 formed between the open end and the closed end of the outer conductor unit 10, and the cavity 100 is a semi-closed cavity. The inner conductor unit 11 is disposed in the cavity 100, and it has a fixed end and a free end. The fixed end of the inner conductor unit 11 is connected to the closed end of the outer conductor unit 10, and the free end of the inner conductor unit 11 extends towards the open end of the outer conductor unit 10.

[0026] The microwave heating assembly 1 may further include a microwave feeding unit connected to the outer conductor unit 10. The microwave feeding unit is connected to the microwave generating unit and feeds the microwave generated by the microwave generating unit into the cavity 100.

[0027] Please refer to Figure 4 , Figure 4 On the right side in [reference], there is a schematic structural view of a microwave heating assembly according to an embodiment of the present invention. The microwave heating assembly 1 further includes a probe 14 disposed in the cavity 100. The probe 14 is longitudinally elongated. One end of the probe 14 penetrates through the seal 12 and the inner conductor unit 11, and the other end extends towards the open end of the outer conductor unit 10. Moreover, the probe 14 is in interference fit with the seal 12 to achieve a better sealing effect. When the aerosol generating substrate 2 is loaded into the cavity 100, the part of the probe 14 extending towards the open end of the outer conductor unit 10 penetrates into the interior of the aerosol generating substrate 2, and is used to generate a microwave field to heat and atomize the aerosol generating substrate 2.

[0028] Optionally, the shape of the upper end of the probe 14 (that is, the end of the probe 14 extending towards the open end of the outer conductor unit 10) may include one of a plane, a sphere, an ellipsoid, a cone, or a frustum of a cone; preferably a frustum of a cone, which can enhance the local field strength, and then accelerate the atomization speed of the aerosol generating medium.

[0029] A groove 112 is formed on a surface of the free end of the inner conductor unit 11. The groove 112 is recessed towards the closed end of the outer conductor unit 10, and the groove 112 is used to accommodate at least part of the aerosol generating substrate 2. That is, the aerosol generating substrate 2 may be partially accommodated in the groove 112 or entirely accommodated in the groove 112.

[0030] As Figure 4 shown on the left side, in the prior art, after the aerosol generating substrate 2 is loaded into the cavity 100, its bottom directly supports on a surface of the free end of the inner conductor unit 11, thus resulting in a technical problem: in order to provide a suitable microwave field, the penetration depth h1 of the probe 14 into the aerosol generating substrate 2 cannot be too small. In particular, when the length of the aerosol generating substrate 2 increases, with the position of the aerosol generating substrate 2 unchanged, in order to provide a suitable microwave field, the penetration depth h1 of the probe 14 into the aerosol generating substrate 2 also needs to increase accordingly, and the length h2 of the probe 14 increases accordingly. When the length h2 of the probe 14 is relatively large, the height h3 of the resonant cavity also increases accordingly, resulting in difficulty in miniaturizing the cavity 100, which is not conducive to the miniaturization of the aerosol generating device. Moreover, as the penetration depth h1 of the probe 14 into the aerosol generating substrate 2 increases, it is also likely to cause the resonant frequency in the resonant cavity to not fall within the compliance frequency band (usually 2.4 - 2.5 GHz).

[0031] As Figure 4 As shown on the right, in the present invention, the aerosol - generating substrate 2 is at least partially received in the groove 112. While the length of the aerosol - generating substrate 2 increases, its position height in the cavity 100 can be reduced. Thus, a suitable microwave field can still be obtained while keeping h1 unchanged. Compared with the prior art on the left, the penetration depth h1 of the probe 14 into the aerosol - generating substrate 2 remains unchanged, but the length h4 of the probe 14 < h2, that is, the length h4 of the probe 14 is effectively reduced, so that the height h5 of the cavity 100 < h3, effectively reducing the height of the cavity 100. Therefore, the microwave heating assembly 1 of the present invention can effectively reduce the height of the cavity 100, which is beneficial to the miniaturization of the aerosol - generating device.

[0032] In addition, the penetration depth h1 of the probe 14 into the aerosol - generating substrate 2 also affects the designed resonance frequency of the cavity 100, and this designed resonance frequency needs to fall within a compliant frequency band (usually between 2.4 and 2.5 GHz). In the prior art, when the length of the aerosol - generating substrate 2 increases, in order to provide a suitable microwave field and with the position of the aerosol - generating substrate 2 unchanged, the penetration depth h1 of the probe 14 into the aerosol - generating substrate 2 also needs to increase. In this way, the value of the designed resonance frequency of the cavity 100 will increase, making it more difficult for the cavity 100 to reach the compliant designed resonance frequency.

[0033] After testing, as shown in Table 1 below, the operating frequency of an aerosol - generating device in the prior art at the minimum dielectric constant is 2.56 GHz (outside the compliant frequency band), and the reflection coefficient is - 12.5 db. At the maximum dielectric constant, the operating frequency is 2.27 GHz (less than the compliant frequency band), and the reflection coefficient is - 3.6 db. Among them, the reflection coefficient is used to characterize the energy utilization rate. The reflection coefficient represents the ratio of the reflected wave to the incident wave. The smaller the reflection coefficient value, the higher the energy utilization rate and the higher the feeding efficiency. At the maximum dielectric constant, its reflection coefficient is only - 3.6 db. The change range of the operating frequency of the device during the heating process is 2.56 GHz - 2.27 GHz = 0.29 GHz.

[0034] Heating process Operating frequency S11 (Reflection coefficient) Minimum dielectric constant 2.56 GHz -12.5 db Maximum dielectric constant 2.27 GHz -3.6 db

[0035] Table 1

[0036] Again, as shown in Table 2 below, the operating frequency of the aerosol - generating device in an embodiment of the present invention at the minimum dielectric constant is 2.48 GHz (falling within the compliant frequency band), and the reflection coefficient is - 27 db. At the maximum dielectric constant, the operating frequency is 2.40 GHz (falling within the compliant frequency band), and the reflection coefficient is - 13 db. The change range of the operating frequency of the device during the heating process is 2.48 GHz - 2.40 GHz = 0.08 GHz.

[0037] Heating process Operating frequency S11 (Reflection coefficient) Minimum dielectric constant 2.48 GHz -27 db Maximum dielectric constant 2.40 GHz -13 db

[0038] Table 2

[0039] As can be seen from the above Table 1 and Table 2, compared with the prior art, in the present invention, at least a part of the aerosol generating matrix 2 is accommodated in the groove 112. When the length of the aerosol generating matrix 2 increases, it can still have a suitable microwave field while keeping h1 unchanged, which is beneficial to reducing the variation range of the operating frequency of the device (from 0.29 GHz to 0.08 GHz), making the operating frequency of the device fall within a compliant frequency band (2.4 - 2.5 GHz), and the reflection coefficient is greatly reduced, having better energy utilization efficiency and feeding efficiency.

[0040] For another example Figure 3 As shown, the seal 12 is arranged in the cavity 100 and is in sealing connection with the outer conductor unit 10. Thus, the seal 12 can divide the cavity 100 into an upper region a1 and a lower region a2 that are hermetically isolated from each other. The condensate in the upper region a1 is intercepted on the seal 12. Therefore, it can prevent the condensate in the upper region a1 from flowing to the lower region a2 of the cavity 100, thereby reducing the risk of the condensate flowing to the bottom of the cavity 100 and contaminating other important components.

[0041] In summary, the beneficial effects of the present invention at least include: at least a part of the aerosol generating matrix 2 is accommodated in the groove 112, which can reduce the height of the cavity 100, thus being beneficial to the miniaturization of the aerosol generating device. The seal 12 arranged in the cavity 100 can be used to intercept the condensate in the cavity 100, thereby reducing the risk of the condensate flowing to the bottom of the cavity 100 and contaminating other important components.

[0042] Furthermore, in this embodiment, the microwave heating assembly 1 further includes a sensor (not shown) arranged outside the cavity 100. As Figure 3 shown, a first through hole 103 is provided on the outer conductor unit 10, and the first through hole 103 conducts air communication between the sensor and the cavity 100. Specifically, the first through hole 103 can communicate the cavity 100 with the outside atmosphere, and the sensor can be arranged in the first through hole 103. Alternatively, the sensor can also be arranged on the side of the first through hole 103 away from the cavity 100. The sensor can be a microphone, MEMS (Micro-Electro-Mechanical System), an air flow sensor, etc. When the aerosol generating device is in use, the user's suction action will cause a pressure change in the cavity 100, and this pressure change can be sensed by the sensor, thereby realizing some intelligent controls based on the sensor, such as controlling the energization and de-energization of the inner conductor unit 11 based on the pressure change in the cavity 100.

[0043] AsFigure 3 As shown, in this embodiment, the outer conductor unit 10 includes a first side wall 101 and a first bottom wall 102 that are connected to each other. The first side wall 101 and the first bottom wall 102 together define a cavity 100. The first through hole 103 is located on the first side wall 101. Of course, the first through hole 103 can also be provided on the first bottom wall 102.

[0044] As Figure 3 shown, in this embodiment, an extension portion 104 protruding away from the cavity 100 is formed on the outer conductor unit 10, and the first through hole 103 penetrates through the extension portion 104. Specifically, the extension portion 104 has a first end connecting to the outer conductor unit 10 and a second end away from the cavity 100. The first through hole 103 extends from the second end of the extension portion 104 to its first end and then communicates with the cavity 100.

[0045] As Figure 3 shown, in this embodiment, a receiving area for accommodating at least a part of the aerosol - generating substrate 2 is defined between the bottom surface of the groove 112 and the open end of the outer conductor unit 10. The range of this receiving area can refer to the range of the upper region a1. The first through hole 103 conducts air communication between the sensor and the receiving area. That is, the first through hole 103 is located above the inner conductor unit 11. Thus, the sensor can sense the air pressure change in the receiving area, and thereby sense the air pressure change around the aerosol - generating substrate 2. The air pressure change around the aerosol - generating substrate 2 can be associated with the user's sucking action, and can be used to realize intelligent control triggered by the user's sucking action.

[0046] As Figure 3 and Figure 5 shown, in this embodiment, the microwave heating assembly 1 further includes a fixing frame 13 for accommodating the aerosol - generating substrate 2. A seal 12 is provided between the fixing frame 13 and the groove 112. A second through hole 120 is formed in the seal 12, and the second through hole 120 corresponds to the first through hole 103 on the outer conductor unit 10. Specifically, the second through hole 120 and the first through hole 103 can be at the same height and are directly opposite and communicate with each other. Thus, the first through hole 103 and the second through hole 120 together conduct air communication between the sensor and the receiving area. The fixing frame 13 is used to accommodate the aerosol - generating substrate 2 and provide an air intake channel for the aerosol - generating substrate 2. Under the user's sucking action, outside air enters the aerosol - generating substrate 2 through the air intake channel on the fixing frame 13, mixes with the aerosol generated by the aerosol - generating substrate 2 and is then sucked by the user. In this way, the suction resistance can be effectively reduced and the temperature of the aerosol sucked by the user can be lowered. The fixing frame 13 is in direct contact with the aerosol - generating substrate 2 and is prone to accumulating condensate. The seal 12 can intercept the condensate flowing out of the fixing frame 13.

[0047] As Figure 3 and Figure 5As shown, in this embodiment, the seal 12 is cylindrical and includes an interconnected second side wall 121 and a second bottom wall 122. The second side wall 121 and the second bottom wall 122 define a semi-closed first accommodation cavity for accommodating the fixing frame 13. The fixing frame 13 is also cylindrical. The cylindrical fixing frame 13 includes an interconnected third side wall 131 and a third bottom wall 132. The third side wall 131 and the third bottom wall 132 define a semi-closed second accommodation cavity for accommodating the aerosol-generating substrate 2. Preferably, the second bottom wall 122 of the seal 12 abuts and directly contacts the bottom wall of the groove 112, and the third bottom wall 132 of the fixing frame 13 abuts and directly contacts the second bottom wall 122 of the seal 12. In this way, the height of the aerosol-generating substrate 2 in the cavity 100 can be minimized, which is beneficial to reducing the length of the probe 14.

[0048] As Figure 1 and Figure 2 shown, on the third side wall 131 of the fixing frame 13, a plurality of positioning ribs 1310 are provided and evenly distributed along its circumference. The positioning ribs 1310 are used to clamp the aerosol-generating substrate 2 located in the second accommodation cavity, especially when the aerosol-generating substrate 2 is in a solid state (such as an aerosol-generating article). Moreover, an intake passage is defined between adjacent positioning ribs 1310 to facilitate the intake of external air to the bottom of the aerosol-generating substrate 2 and then into the aerosol-generating substrate 2 to be mixed with the aerosol generated by microwave heating.

[0049] As Figure 5 shown, the cross-sections of the groove 112, the seal 12, and the fixing frame 13 are all circular. The inner diameter of the groove 112 is greater than the outer diameter of the seal 12, and the inner diameter of the seal 12 is greater than the outer diameter of the fixing frame 13. Thus, the seal 12 can be first placed in the groove 112, and then the fixing frame 13 can be placed in the seal 12. Of course, in other embodiments, the groove 112, the seal 12, and / or the fixing frame 13 can also be of other shapes, and the cross-sections of the groove 112, the seal 12, and / or the fixing frame 13 can also be non-circular, such as square or other regular or irregular shapes.

[0050] As Figure 3 and Figure 5 shown, in this embodiment, the inner conductor unit 11 includes a conductor column 111 and a conductor disc 110. The conductor column 111 includes a fixed end and a free end. The fixed end of the conductor column 111 is connected to the closed end of the outer conductor unit 10. The conductor disc 110 is connected to the free end of the conductor column 111. One end of the conductor disc 110 away from the conductor column 111 forms the free end of the inner conductor unit 11. The groove 112 is formed on the surface of the conductor disc 110 facing away from the conductor column 111. Please refer to Figure 4, the probe 14 is longitudinally elongated, with one end penetrating the third bottom wall 132 of the fixing bracket 13, the second bottom wall 122 of the seal 12, and the conductor post 111, and the other end extending towards the open end of the outer conductor unit 10. Specifically, the fixed end of the conductor post 111 is in ohmic contact with the closed end of the outer conductor unit 10, and the conductor disc 110 is in ohmic contact with the free end of the conductor post 111. Preferably, the central axes of the conductor post 111 and the conductor disc 110 coincide with the central axis y of the cavity 100. The central axis y of the cavity 100 can be consistent with the direction in which the aerosol generating substrate 2 is loaded into the cavity 100.

[0051] The conductor post 111 can be cylindrical. One end (the bottom end) away from the open end of the outer conductor unit 10 is the fixed end of the inner conductor unit 11, fixed to the closed end of the outer conductor unit 10. One end (the top end) close to the open end is the free end of the inner conductor unit 11, extending towards the open end of the outer conductor unit 10. The diameter of the conductor post 111 is smaller than the inner diameter of the outer conductor unit 10. It can be understood that the conductor post 111 is not limited to being cylindrical, and it can also be square-columnar, elliptical-columnar, stepped-columnar, irregular-columnar or other shapes. In addition, an axially extending screw 113 is provided at the bottom end of the conductor post 111, and the screw 113 can be integrally combined with the conductor post 111. An installation hole penetrating the first bottom wall 102 is provided on the first bottom wall 102 of the outer conductor unit 10, and the screw 113 is in threaded cooperation with the installation hole to fix the conductor post 111 on the first bottom wall 102 of the outer conductor unit 10, so as to form a reliable ohmic contact between the conductor post 111 and the outer conductor unit 10.

[0052] As Figure 3 shown, a jack 1110 is also provided on the conductor post 111, and the jack 1110 is used to cooperate with the microwave feeding unit to achieve the conduction of microwaves. Specifically, the microwave feeding unit can include a radio frequency connector (not shown), and the radio frequency connector can be a standard or non-standard radio frequency connector. For example, the radio frequency connector can be a standard SMP-JYD radio frequency connector. A feeding hole 105 is provided on the first side wall 101 of the outer conductor unit 10. The radio frequency connector partially extends into the feeding hole 105 and is in plug-in cooperation with the jack 1110 on the conductor post 111. At the same time, the radio frequency connector is also in ohmic contact with the first side wall 101 of the outer conductor unit 10, so as to feed the microwaves generated by the microwave generating unit into the cavity 100. The jack 1110 can be a blind hole, in the shape of a straight cylindrical channel, extending radially from the outer peripheral wall of the conductor post 111 into the interior of the conductor post 111. Preferably, the aperture of the jack 1110 is adapted to the diameter of the inner conductor of the radio frequency connector.

[0053] The conductor disk 110 is used for microwave conduction, and can also increase its own inductance and capacitance, as well as match the resonance frequency, while facilitating further reduction in the size of the cavity 100. The conductor disk 110 can be in a disk shape, and its diameter is larger than that of the conductor column 111. The conductor disk 110 can be integrally combined with the conductor column 111 or be in ohmic contact with the conductor column 111.

[0054] The conductor column 111, the conductor disk 110, and / or the outer conductor unit 10 can be processed from a metal material or other highly conductive materials. Taking the outer conductor unit 10 as an example, the outer conductor unit 10 can include one or more of gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, stainless steel, etc. Alternatively, the outer conductor unit 10 can also include a non-metallic main body and a metal coating provided on the outer layer of the non-metallic main body.

[0055] The probe 14 can be integrally made of a conductive metal material, preferably stainless steel, aluminum alloy or copper. It can be understood that the probe 14 is not limited to being integrally made of a conductive material, and it can also be realized by plating a conductive coating on the outer surface of a non-conductive body. The conductive coating is preferably a silver coating or a gold coating.

[0056] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, all of which belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention should fall within the scope covered by the claims of the present invention.

Claims

1. A microwave heating component (1), characterized in that, It includes a cylindrical outer conductor unit (10), an inner conductor unit (11) and a seal (12); the outer conductor unit (10) has an open end and a closed end, and a cavity (100) formed between the open end and the closed end of the outer conductor unit (10); the inner conductor unit (11) is arranged in the cavity (100), which has a fixed end and a free end, the fixed end of the inner conductor unit (11) is connected to the closed end of the outer conductor unit (10), and the free end of the inner conductor unit (11) extends towards the open end of the outer conductor unit (10); a groove (112) is formed on one surface of the free end of the inner conductor unit (11), and the groove (112) is recessed towards the direction of the closed end of the outer conductor unit (10); the seal (12) is arranged in the cavity (100) and is in sealing contact with the outer conductor unit (10).

2. The microwave heating component (1) according to claim 1, characterized in that, The microwave heating assembly (1) further includes a sensor arranged outside the cavity (100), and a first through hole (103) is provided on the outer conductor unit (10), and the first through hole (103) conducts air communication between the sensor and the cavity (100).

3. The microwave heating assembly (1) according to claim 2, characterized in that, The outer conductor unit (10) includes a first side wall (101) and a first bottom wall (102) that are joined together, and the first side wall (101) and the first bottom wall (102) together define the cavity (100); the first through hole (103) is located on the first side wall (101).

4. The microwave heating component (1) according to claim 2, characterized in that, An extension part (104) protruding away from the cavity (100) is formed on the outer conductor unit (10), and the first through hole (103) penetrates through the extension part (104).

5. The microwave heating component (1) according to claim 2, characterized in that, A receiving area for accommodating the aerosol generating substrate (2) is defined between the groove bottom surface of the groove (112) and the open end of the outer conductor unit (10), and the first through hole (103) conducts air communication between the sensor and the receiving area.

6. The microwave heating assembly (1) according to claim 2, characterized in that, The microwave heating assembly (1) further includes a fixing frame (13) for accommodating the aerosol generating substrate (2); the seal (12) is arranged between the fixing frame (13) and the groove (112); a second through hole (120) is formed on the seal (12), and the second through hole (120) corresponds to the first through hole (103).

7. The microwave heating component (1) according to claim 1, characterized in that, The seal (12) is cylindrical, and it includes a second side wall (121) and a second bottom wall (122) that are joined together; the second side wall (121) abuts against the outer conductor unit (10). And / or, at least part of the seal (12) is arranged in the groove (112).

8. The microwave heating component (1) according to claim 1, characterized in that, The microwave heating assembly (1) further includes a probe (14) arranged in the cavity (100). The probe (14) is longitudinally elongated, one end of which penetrates into the seal (12) and the inner conductor unit (11), and the other end extends towards the open end of the outer conductor unit (10).

9. The microwave heating component (1) according to claim 1, characterized in that, The inner conductor unit (11) includes a conductor column (111) and a conductor disc (110); the conductor column (111) includes a fixed end and a free end, and the fixed end of the conductor column (111) is connected to the closed end of the outer conductor unit (10); the conductor disc (110) is connected to the free end of the conductor column (111), and one end of the conductor disc (110) away from the conductor column (111) forms the free end of the inner conductor unit (11); the groove (112) is formed on the surface of the conductor disc (110) facing away from the conductor column (111).

10. An aerosol generating device, characterized in that, It includes a microwave generating unit and the microwave heating assembly (1) according to any one of claims 1 to 9. The microwave heating assembly (1) further includes a microwave feeding unit connected to the outer conductor unit (10). The microwave feeding unit is connected to the microwave generating unit and feeds the microwave generated by the microwave generating unit into the cavity (100).

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