Microwave heating assembly and aerosol generating device

Abstract

A microwave heating assembly (1) and an aerosol generating device. The microwave heating assembly (1) comprises a tubular outer conductor unit (10), an inner conductor unit (11), and a sealing member (12); the outer conductor unit (10) has an open end, 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), and has a fixed end connected to the closed end of the outer conductor unit (10) and a free end extending towards the open end of the outer conductor unit (10); a recess (112) is formed in one surface of the free end of the inner conductor unit (11), and the recess (112) is recessed towards the closed end of the outer conductor unit (10); the sealing member (12) is arranged in the cavity (100) and is sealingly connected to the outer conductor unit (10). An aerosol generating substrate (2) is at least partially accommodated in the recess (112), so that the height of the cavity (100) can be reduced, facilitating the miniaturization of the aerosol generating device. The sealing member (12) arranged in the cavity (100) can be used for intercepting a 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.

Description

Microwave heating assembly and aerosol generating device Technical Field

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

[0002] Aerosol-generating devices can heat and atomize the aerosol-generating matrix through microwave heating. Prior art aerosol-generating devices typically include a microwave heating assembly, which typically includes an outer conductor unit, a resonant cavity defined by the outer conductor unit, and an inner conductor unit disposed within the resonant cavity. The volume of the inner and outer conductor units affects the designed resonant frequency of the resonant cavity. A drawback of prior art is that, in order for the resonant cavity to achieve the required designed resonant frequency (typically between 2.4 and 2.5 GHz), the cavity design volume is relatively large, hindering the miniaturization of the aerosol-generating device. Furthermore, the outer wall of the resonant cavity is often at a lower temperature. When the aerosol in the resonant cavity encounters the cooler outer wall, it easily forms condensation. This condensation then flows downward into the core of the bottom of the resonant cavity, causing contamination 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 assembly and aerosol generating device in response to at least one defect of the above-mentioned prior art.

[0004] The technical solution adopted by the present invention to solve its technical problems is: providing a microwave heating component, which includes a cylindrical outer conductor unit, an inner conductor unit and a sealing member; the outer conductor unit has an open end and a closed end, and a cavity is formed between the open end and the closed end of the outer conductor unit; the inner conductor unit is arranged in the cavity, and 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 toward the open end of the outer conductor unit; a groove is formed on a surface of the free end of the inner conductor unit, and the groove is recessed toward the closed end of the outer conductor unit; the sealing member is arranged in the cavity and is sealed with the outer conductor unit.

[0005] Preferably, the microwave heating assembly further comprises a sensor arranged outside the cavity, and a first through hole is provided on the outer conductor unit, and the first through hole connects the sensor with the cavity in an air-conducting manner.

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

[0007] Preferably, an extension portion protruding in a direction away from the cavity is formed on the outer conductor unit, and the first through hole passes through the extension portion.

[0008] Preferably, an accommodating area for accommodating an aerosol generating substrate is defined between the bottom surface of the groove and the open end of the outer conductor unit, and the first through hole connects the sensor to the accommodating area in an air-conductive manner.

[0009] Preferably, the microwave heating assembly further comprises a fixing frame for accommodating the aerosol generating matrix; the sealing member is arranged between the fixing frame and the groove; and a second through hole is formed on the sealing member, and the second through hole corresponds to the first through hole.

[0010] Preferably, the sealing member is cylindrical and comprises a second side wall and a second bottom wall connected to each other; the second side wall abuts against the outer conductor unit;

[0011] And / or, the sealing element is at least partially disposed in the groove.

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

[0013] The probe is elongated, with one end penetrating the seal and the inner conductor unit and the other end extending toward the open end of the outer conductor unit. Preferably, the inner conductor unit comprises a conductor post and a conductor disc; the conductor post comprises a fixed end and a free end, the fixed end of the conductor post being connected to the closed end of the outer conductor unit; the conductor disc being connected to the free end of the conductor post, with the end of the conductor disc facing away from the conductor post forming the free end of the inner conductor unit; and the groove being formed on the surface of the conductor disc facing away from the conductor post.

[0014] The present invention also provides an aerosol generating device, which includes a microwave generating unit and a microwave heating component described in any one of the above items, wherein the microwave heating component also 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 contained within the recess, which can reduce the height of the cavity, thereby facilitating miniaturization of the aerosol-generating device. A seal disposed within the cavity can intercept condensate within the cavity, thereby reducing the risk of condensate flowing to the bottom of the cavity and contaminating other important components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0017] FIG1 is a schematic diagram of the overall structure of a microwave heating assembly according to an embodiment of the present invention;

[0018] FIG2 is a schematic diagram of the top view of the structure of FIG1;

[0019] FIG3 is a cross-sectional view taken along line AA of FIG2 ;

[0020] FIG4 is a schematic diagram showing a comparison of the structures of a microwave heating assembly in the prior art and a microwave heating assembly according to an embodiment of the present invention;

[0021] FIG5 is a schematic diagram of the exploded structure of the microwave heating assembly shown in FIG1 . DETAILED DESCRIPTION

[0022] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. It should be noted that "first" and "second" are only used to distinguish the two components and should not be understood as limiting the present invention.

[0023] The aerosol-generating device provided by the present invention can use microwaves to heat an aerosol-generating substrate 2, thereby atomizing and generating an aerosol for inhalation by the user. In some embodiments, the aerosol-generating substrate 2 is a solid aerosol-generating substrate 2, such as a processed plant leaf product. It is 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 generator (not shown) and a microwave heating assembly 1. The microwave generator generates microwaves. When the device is in use, an aerosol-generating substrate 2 is loaded into the microwave heating assembly 1. The microwave heating assembly 1 is connected to the microwave generator to receive microwaves, forming a microwave field. This microwave field acts on the aerosol-generating substrate 2, heating it.

[0025] As shown in Figures 1 to 3, a microwave heating assembly 1 according to an embodiment of the present invention includes an outer conductor unit 10, an inner conductor unit 11, and a sealing member 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 and closed ends of the outer conductor unit 10. The cavity 100 is a semi-enclosed cavity. The inner conductor unit 11 is disposed within the cavity 100 and 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 toward 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. The right side of Figure 4 is a schematic structural diagram of a microwave heating assembly according to an embodiment of the present invention. The microwave heating assembly 1 also includes a probe 14 disposed within the cavity 100. The probe 14 is elongated, with one end penetrating the seal 12 and the inner conductor unit 11 and the other end extending toward the open end of the outer conductor unit 10. Furthermore, the probe 14 and the seal 12 form an interference fit to achieve a good sealing effect. When the aerosol-generating substrate 2 is loaded into the cavity 100, the portion of the probe 14 extending toward the open end of the outer conductor unit 10 penetrates the interior of the aerosol-generating substrate 2, thereby generating a microwave field to heat and atomize the aerosol-generating substrate 2.

[0028] Optionally, the shape of the upper end of the probe 14 (i.e., the end of the probe 14 extending toward the open end of the outer conductor unit 10) may include a plane, a sphere, an ellipsoid, a cone or a truncated cone; preferably, the truncated cone shape can enhance the local field strength and thereby accelerate the atomization speed of the aerosol generating medium.

[0029] A groove 112 is formed on one surface of the free end of the inner conductor unit 11. The groove 112 is recessed toward the closed end of the outer conductor unit 10. The groove 112 is used to accommodate at least a portion of the aerosol-generating substrate 2. In other words, the aerosol-generating substrate 2 can be partially or completely accommodated in the groove 112.

[0030] As shown on the left side of Figure 4 , in the prior art, after the aerosol-generating substrate 2 is loaded into the cavity 100, its bottom is directly supported on a surface of the free end of the inner conductor unit 11. This creates a technical problem: to provide a suitable microwave field, the depth h1 of the probe 14 penetrating into the aerosol-generating substrate 2 cannot be too small. Specifically, as the length of the aerosol-generating substrate 2 increases, while the position of the aerosol-generating substrate 2 remains unchanged, the depth h1 of the probe 14 penetrating into the aerosol-generating substrate 2 must also increase to provide a suitable microwave field, and the length h2 of the probe 14 also increases accordingly. When the length h2 of the probe 14 is large, the height h3 of the resonant cavity is also correspondingly large, making it difficult to miniaturize the cavity 100 and, consequently, hindering the miniaturization of the aerosol-generating device. Furthermore, as the depth h1 of the probe 14 penetrating into the aerosol-generating substrate 2 increases, the resonant frequency within the resonant cavity may not fall within the required frequency band (typically 2.4-2.5 GHz).

[0031] As shown on the right side of Figure 4, in the present invention, the aerosol - generating matrix 2 is at least partially accommodated in the groove 112. While increasing the length of the aerosol - generating matrix 2, the position height of the aerosol - generating matrix 2 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 side, the depth h1 of the probe 14 penetrating into the aerosol - generating matrix 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 component 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 depth h1 of the probe 14 penetrating into the aerosol - generating matrix 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 matrix 2 increases, in order to provide a suitable microwave field, with the position of the aerosol - generating matrix 2 unchanged, the depth h1 of the probe 14 penetrating into the aerosol - generating matrix 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 experiments, 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]

[0035] Table 1

[0036] Again, as shown in Table 2 below, for the aerosol - generating device of an embodiment of the present invention, the operating frequency 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]

[0038] Table 2

[0039] As can be seen from Tables 1 and 2 above, compared with the prior art, the present invention places the aerosol-generating substrate 2 at least partially within the groove 112. When the length of the aerosol-generating substrate 2 increases, a suitable microwave field can be maintained while keeping h1 unchanged. This helps to reduce the variation range of the device's operating frequency (from 0.29 GHz to 0.08 GHz), allowing the device's operating frequency to fall within the compliant frequency band (2.4-2.5 GHz). The reflection coefficient is also greatly reduced, resulting in better energy utilization and feeding efficiency.

[0040] As shown in FIG3 , the seal 12 is disposed in the cavity 100 and is sealed to the outer conductor unit 10. Thus, the seal 12 can separate the cavity 100 into an upper area a1 and a lower area a2 that are sealed and isolated from each other. The condensate in the upper area a1 is intercepted on the seal 12, thereby preventing the condensate in the upper area a1 from flowing to the lower area 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 present invention has at least the following beneficial effects: the aerosol-generating substrate 2 is at least partially accommodated within the recess 112, which can reduce the height of the cavity 100, thereby facilitating miniaturization of the aerosol-generating device. The seal 12 disposed within the cavity 100 can be used to intercept condensate within the cavity 100, thereby reducing the risk of condensate flowing to the bottom of the cavity 100 and contaminating other important components.

[0042] Furthermore, in this embodiment, the microwave heating assembly 1 also includes a sensor (not shown) disposed outside the cavity 100. As shown in Figure 3, the outer conductor unit 10 is provided with a first through-hole 103, which connects the sensor to the cavity 100 through air. Specifically, the first through-hole 103 connects the cavity 100 to the outside atmosphere, and the sensor can be disposed within the first through-hole 103. Alternatively, the sensor can be disposed on a side of the first through-hole 103 away from the cavity 100. The sensor can be a microphone, a micro-electro-mechanical system (MEMS), an airflow sensor, or the like. When the aerosol generating device is in use, the user's puffing action causes pressure changes within the cavity 100. This pressure change can be sensed by the sensor, enabling intelligent sensor-based control, such as controlling the power on and off of the inner conductor unit 11 based on the pressure change within the cavity 100.

[0043] As shown in FIG3 , 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 shown in Figure 3, in this embodiment, an extension portion 104 is formed on the outer conductor unit 10, protruding in a direction away from the cavity 100. The first through hole 103 extends through the extension portion 104. Specifically, the extension portion 104 has a first end connected 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 the first end thereof, and then communicates with the cavity 100.

[0045] As shown in Figure 3, in this embodiment, a accommodating area for accommodating at least a portion 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 scope of this accommodating area can be referred to as the scope of the upper area a1. The first through-hole 103 connects the sensor to the accommodating area through a pneumatic connection. That is, the first through-hole 103 is located above the inner conductor unit 11. This allows the sensor to sense changes in air pressure within the accommodating area, and thus, around the aerosol-generating substrate 2. These changes in air pressure around the aerosol-generating substrate 2 can be correlated with the user's puffing action, enabling intelligent control triggered by the user's puffing action.

[0046] As shown in Figures 3 and 5, in this embodiment, the microwave heating assembly 1 further includes a mounting frame 13 for accommodating the aerosol-generating matrix 2. A sealing member 12 is disposed between the mounting frame 13 and the recess 112. A second through-hole 120 is defined in the sealing member 12, corresponding to the first through-hole 103 in the outer conductor unit 10. Specifically, the second through-hole 120 and the first through-hole 103 can be located at the same height and directly connected to each other. Thus, the first through-hole 103 and the second through-hole 120 jointly provide air-conducting communication between the sensor and the accommodating area. The mounting frame 13 is used to accommodate the aerosol-generating matrix 2 and provide an air inlet channel for the aerosol-generating matrix 2. When a user draws in air, ambient air enters the aerosol-generating matrix 2 through the air inlet channel of the mounting frame 13, mixes with the aerosol generated by the aerosol-generating matrix 2, and is then inhaled by the user. This effectively reduces inhalation resistance and lowers the temperature of the aerosol inhaled by the user. The fixing frame 13 is in direct contact with the aerosol generating substrate 2 and is prone to condensation. The sealing member 12 can intercept the condensation flowing out of the fixing frame 13 .

[0047] As shown in Figures 3 and 5, in this embodiment, the sealing member 12 is cylindrical and includes a second side wall 121 and a second bottom wall 122 that are connected. The second side wall 121 and the second bottom wall 122 define a semi-enclosed first accommodating chamber for accommodating the fixed frame 13. The fixed frame 13 is also cylindrical and includes a third side wall 131 and a third bottom wall 132 that are connected. The third side wall 131 and the third bottom wall 132 define a semi-enclosed second accommodating chamber for accommodating the aerosol-generating substrate 2. Preferably, the second bottom wall 122 of the sealing member 12 is connected to and directly contacts the bottom wall of the groove 112, and the third bottom wall 132 of the fixed frame 13 is connected to and directly contacts the second bottom wall 122 of the sealing member 12. This can minimize the height of the aerosol-generating substrate 2 within the cavity 100, thereby facilitating a reduction in the length of the probe 14.

[0048] As shown in Figures 1 and 2 , the third sidewall 131 of the mounting frame 13 is provided with a plurality of positioning ribs 1310 evenly distributed along its circumference. These positioning ribs 1310 are used to clamp the aerosol-generating substrate 2 within the second accommodating chamber, particularly when the aerosol-generating substrate 2 is in a solid state (e.g., an aerosol-generating article). Furthermore, adjacent positioning ribs 1310 define at least a portion of an air inlet channel, facilitating the inhalation of ambient air into the bottom of the aerosol-generating substrate 2, where it then enters the aerosol-generating substrate 2 and mixes with the aerosol generated by microwave heating.

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

[0050] As shown in Figures 3 and 5 , in this embodiment, the inner conductor unit 11 includes a conductor post 111 and a conductor disc 110. The conductor post 111 includes a fixed end and a free end. The fixed end of the conductor post 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 post 111, with the end of the conductor disc 110 facing away from the conductor post 111 forming the free end of the inner conductor unit 11. A groove 112 is formed on the surface of the conductor disc 110 facing away from the conductor post 111. Referring also to Figure 4 , the probe 14 is elongated, with one end extending through the third bottom wall 132 of the fixing frame 13, the second bottom wall 122 of the sealing member 12, and the conductor post 111, and the other end extending toward the open end of the outer conductor unit 10. Specifically, the fixed end of the conductor post 111 makes ohmic contact with the closed end of the outer conductor unit 10, while the conductor disc 110 makes ohmic contact with the free end of the conductor post 111. Preferably, the central axis of the conductor column 111 and the conductor disk 110 coincides with the central axis y of the cavity 100. The central axis y of the cavity 100 may be consistent with the direction in which the aerosol-generating substrate 2 is loaded into the cavity 100.

[0051] The conductor post 111 may be cylindrical, with its end (bottom end) away from the open end of the outer conductor unit 10 serving as the fixed end of the inner conductor unit 11, fixed to the closed end of the outer conductor unit 10. Its end (top end) closer to the open end serves as the free end of the inner conductor unit 11, extending toward 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 is understood that the conductor post 111 is not limited to being cylindrical; it may also be in other shapes, such as a square column, an elliptical column, a stepped column, or an irregular column. Furthermore, an axially extending screw 113 is provided at the bottom end of the conductor post 111, and the screw 113 may be integrally coupled to the conductor post 111. The first bottom wall 102 of the outer conductor unit 10 is provided with a mounting hole that passes through the first bottom wall 102. The screw 113 is threadedly engaged with the mounting hole to fix the conductor post 111 on the first bottom wall 102 of the outer conductor unit 10, so that a reliable ohmic contact is formed between the conductor post 111 and the outer conductor unit 10.

[0052] As shown in Figure 3, the conductor post 111 is also provided with a socket 1110, which is used to cooperate with the microwave feed unit to achieve microwave transmission. Specifically, the microwave feed unit may include an RF connector (not shown), which can be a standard or non-standard RF connector, for example, a standard SMP-JYD RF connector. A feed hole 105 is provided on the first sidewall 101 of the outer conductor unit 10. The RF connector partially extends into the feed hole 105 and plugs into the socket 1110 on the conductor post 111. Simultaneously, the RF connector forms ohmic contact with the first sidewall 101 of the outer conductor unit 10, thereby feeding the microwaves generated by the microwave generating unit into the cavity 100. The socket 1110 may be a blind hole, a straight cylindrical channel extending radially along the outer circumference of the conductor post 111 into the interior of the conductor post 111. Preferably, the diameter of the socket 1110 matches the diameter of the inner conductor of the RF connector.

[0053] The conductor disk 110 is used for microwave conduction and can also increase its own inductance and capacitance, match the resonant frequency, and facilitate further reduction in the size of the cavity 100. The conductor disk 110 can be disc-shaped, with a diameter greater than the diameter of the conductor post 111. The conductor disk 110 can be integrally bonded to the conductor post 111 or can be in ohmic contact with the conductor post 111.

[0054] The conductor post 111, the conductor disc 110, and / or the outer conductor unit 10 can be made of metal or other highly conductive materials. For example, the outer conductor unit 10 can include one or more of gold, silver, copper, aluminum, iron, a gold-containing alloy, an aluminum-containing alloy, a copper-containing alloy, an iron-containing alloy, stainless steel, and the like. Alternatively, the outer conductor unit 10 can include a non-metallic body and a metal coating disposed on the outer layer of the non-metallic body.

[0055] The probe 14 can be made of a conductive metal material, preferably stainless steel, aluminum alloy, or copper. It is understood that the probe 14 is not limited to being made of a conductive material, and can also be made 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 is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of 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 disposed 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 toward 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 in the direction of the closed end of the outer conductor unit (10); the seal (12) is disposed in the cavity (100) and is in sealed contact with the outer conductor unit (10).

2. The microwave heating assembly (1) according to claim 1, wherein The microwave heating assembly (1) further includes a sensor disposed 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 assembly (1) according to claim 2, characterized in that, 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).

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 component (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 disposed between the fixing frame (13) and the groove (112); a second through hole (120) is provided 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 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 a part of the seal (12) is disposed 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) disposed 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 toward the open end of the outer conductor unit (10).

9. The microwave heating assembly (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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