Heating assembly and aerosol generating device

Abstract

The utility model discloses a heating assembly and an aerosol generating device. The heating assembly comprises an outer tube, an inner tube, a first electrode and a second electrode, and the outer tube comprises a closed end; the inner pipe is sleeved with the outer pipe and comprises a first end close to the closed end, and an opening is formed in the first end; the first electrode extends into the inner tube and comprises a top end and a main body part which are formed in a split mode and connected with each other, and the heat conductivity of the main body part is larger than that of the top end; the second electrode is arranged at the opening of the first end and is opposite to and spaced from the top end, and the second electrode and the first electrode are configured to discharge in the interval where the second electrode and the top end are opposite and spaced during power connection. The top end and the main body part which are formed in a split mode are arranged, the top end participates in discharging and is small in heat conductivity, the main body part is high in heat conductivity, high temperature of the top end can be rapidly conducted downwards through the main body part, ablation and sputtering of the first electrode are reduced, and the service life of the heating assembly is prolonged.

Description

Technical Field

[0001] This application relates to the field of heated non-combustible technology, and more specifically, to a heating element and an aerosol generating device. Background Technology

[0002] In related technologies, aerosol generation devices typically utilize the heat from electrode discharge to heat the aerosol generation matrix. However, the electrodes are constantly exposed to high voltage and high temperature environments, making them susceptible to high-field sputtering and high-temperature ablation, resulting in a short electrode lifespan. Furthermore, since the electrodes are located inside inner and outer tubes, excessive electrode sputtering can easily reduce the insulation strength of the inner and outer tubes, leading to high-voltage breakdown and severely impacting their service life. Utility Model Content

[0003] This application provides a heating element and an aerosol generating device, which are used to at least reduce electrode erosion and sputtering and improve service life.

[0004] The heating component of this application includes an outer tube, an inner tube, a first electrode, and a second electrode. The outer tube includes a closed end. The inner tube is sleeved inside the outer tube and includes a first end near the closed end, with an opening formed at the first end. The first electrode extends into the inner tube and includes a top end and a main body that are separately formed and connected to each other. The thermal conductivity of the main body is greater than that of the top end. The second electrode is disposed at the opening of the first end and is opposite to and spaced from the top end. The second electrode and the first electrode are configured to discharge in the spaced interval between the second electrode and the top end when energized.

[0005] In the heating assembly of this application embodiment, the first electrode includes a separately formed top end and a main body. The top end participates in the discharge and has low thermal conductivity, while the main body has high thermal conductivity and is connected to the top end. This allows the high temperature of the top end to be quickly conducted downwards through the main body during discharge, thereby reducing the ablation and sputtering of the first electrode and improving the service life of the heating assembly. Simultaneously, reducing electrode ablation and sputtering also reduces the risk of insulation failure of the inner and outer tubes due to electrode sputtering, improving reliability and helping to maintain a reasonable distribution of the discharge temperature field throughout the service life.

[0006] In some embodiments, the radial dimension of the tip is greater than or equal to the radial dimension of the body.

[0007] Thus, by making the radial dimension of the top part greater than or equal to the radial dimension of the main body, the overall radial dimension of the first electrode is kept as small as possible, and it is also beneficial that the end face of the main body is easily covered by the top part when the top part and the main body are docked, thereby reducing the impact of the misalignment between the top part and the main body.

[0008] In some embodiments, the axial dimension of the tip ranges from 0.5 mm to 3.0 mm; and / or, the radial dimension of the tip ranges from 0.5 mm to 0.8 mm.

[0009] In this way, by keeping the axial and / or radial dimensions of the tip within a reasonable range, while maintaining a small size of the first electrode, the tip of the discharge becomes more blunt, thereby minimizing electrode sputtering and improving the service life of the heating component.

[0010] In some embodiments, the end face opposite the second electrode is a plane.

[0011] Thus, the end face of the top electrode opposite to the second electrode, that is, the discharge end face, is a plane. Compared with the protruding discharge tip, the fact that the discharge end face of the top electrode is a plane can ensure effective discharge while avoiding excessively rapid ablation of the top electrode.

[0012] In some embodiments, the surface of the main body is provided with a first coating, which is a high heat-resistant metal layer, and the first coating constitutes the top end.

[0013] Thus, by setting a first coating on the surface of the main body, which is a high heat-resistant metal layer, oxidation of the first electrode can be avoided to a certain extent, thereby improving its service life.

[0014] In some embodiments, the second electrode includes a discharge end and a fixing part connected to each other, the discharge end extending at least partially into the opening of the first end opposite to the top end, the discharge end being used to discharge when energized, and the thermal conductivity of the fixing part being greater than that of the discharge end.

[0015] Thus, by extending at least partially into the opening of the first end and facing the top end, the discharge end and the top end of the first electrode discharge when energized. The thermal conductivity of the fixing part is greater than that of the discharge end, so the fixing part can conduct heat quickly, reducing sputtering and ablation of the second electrode, thereby improving service life.

[0016] In some embodiments, the fixing part abuts against the end face of the first end, the fixing part is formed with a mounting hole, the mounting hole communicates with the opening of the first end, and the discharge end passes through the mounting hole and the opening of the first end.

[0017] Thus, by fixing the end face of the first end and forming a mounting hole that communicates with the opening of the first end, the discharge end passes through the mounting hole and the opening of the first end. Therefore, the mounting hole and the opening of the first end can jointly restrict the radial positioning of the discharge end, improve the coaxiality of the discharge end with the inner tube, and make the installation more stable. It also improves the insulation reliability between the inner tube and the second electrode.

[0018] In some embodiments, the surface of the fixing part is provided with a second coating, which is a high heat-resistant metal layer.

[0019] Thus, by providing a second coating on the surface of the fixing part, which is a high heat-resistant metal layer, the oxidation of the second electrode is slowed down or even avoided, thereby improving its service life.

[0020] The aerosol generating apparatus of this application includes the heating component of any of the above embodiments.

[0021] In the aerosol generating apparatus of this application, the first electrode includes a separately formed top end and a main body. The top end participates in the discharge and has low thermal conductivity, while the main body has high thermal conductivity and is connected to the top end. This allows the high temperature at the top end to be rapidly conducted downwards through the main body during discharge, thereby reducing ablation and sputtering of the first electrode and improving the service life of the heating element. Simultaneously, reducing electrode ablation and sputtering also reduces the risk of insulation failure of the inner and outer tubes due to electrode sputtering, improving reliability and helping to maintain a reasonable distribution of the discharge temperature field throughout its service life.

[0022] In some embodiments, the aerosol generating device includes a support with a mounting groove, an outer tube inserted into the mounting groove, and adhesive between the outer tube and the groove wall to bond the outer tube and the support.

[0023] Thus, by using adhesive between the outer tube and the wall of the mounting groove to bond the outer tube and the bracket, the outer tube can be fixedly installed on the bracket in a vertical position with a small eccentricity. Furthermore, the connection between the outer tube and the bracket is integrated, which is conducive to the modularization and integration of components, thereby reducing the risk of outer tube breakage and improving the structural reliability of the aerosol generation device under conditions such as drops and external impacts.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the aerosol generating apparatus according to an embodiment of this application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the aerosol generation device along the AA direction;

[0028] Figure 3 yes Figure 2 An enlarged schematic diagram of part B;

[0029] Figure 4 yes Figure 2 An enlarged schematic diagram of part C;

[0030] Figure 5 This is a schematic diagram of the structure of the first electrode according to an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of the second electrode in an embodiment of this application.

[0032] Explanation of key component symbols:

[0033] 1000-Aerosol generating device; 100-Heating component; 10-Outer tube; 11-Open end; 12-Closed end; 20-Inner tube; 21-First end; 30-First electrode; 31-Top end; 32-Main body; 321-First coating; 33-Electrode disk; 40-Second electrode; 41-Discharge end; 42-Fixing part; 421-Mounting hole; 422-Second coating; 50-Conductive component; 60-Bracket; 601-Mounting groove; 62-Adhesive; 63-Buffer component. Detailed Implementation

[0034] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0035] In the description of this application, it should be understood that the terms "center," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only, and...

[0036] This should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above" the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0040] Please see Figure 1 The aerosol generating device 1000 is a structure capable of generating aerosols by applying heat to an aerosol generating matrix (not shown) through resistance heating, electromagnetic heating, microwave heating, laser irradiation, infrared light irradiation, ultrasound, or mechanical vibration. The aerosol generating matrix is ​​a plant flower, stem, or leaf product that has been treated and heated to produce aerosols. The aerosol generating matrix can be in a fully solid, semi-solid, or liquid state. When the aerosol generating matrix is ​​fully solid, it can be prepared using processes such as rolling, slurry preparation, die casting, or extrusion. The aerosol generating matrix can be a cylindrical structure, or a sheet, strip, or block structure.

[0041] Aerosol generating matrix is ​​atomized by heating to form aerosols. Aerosols can be visible or invisible and may include vapors (e.g., fine particulate matter in a gaseous state, which are typically liquid or solid at room temperature) as well as liquid droplets of gas and condensed vapor. Users can inhale aerosols into their mouth, nasal cavity, or lungs through their mouth or nose. Aerosols inhaled into the user's respiratory system can be used for various purposes such as food, medicine, health care, and recreation.

[0042] Please see Figure 2 , Figure 3 and Figure 5 The heating component 100 of this application includes an outer tube 10, an inner tube 20, a first electrode 30, and a second electrode 40. The outer tube 10 includes a closed end 12. The inner tube 20 is sleeved inside the outer tube 10 and includes a first end 21 near the closed end 12, with an opening formed in the first end 21. The first electrode 30 extends into the inner tube 20 and includes a top end 31 and a main body 32 that are separately formed and connected to each other. The thermal conductivity of the main body 32 is greater than that of the top end 31. The second electrode 40 is disposed at the opening of the first end 21 and is opposite to and spaced from the top end 31. The second electrode 40 and the first electrode 30 are configured to discharge in the interval between the second electrode 40 and the top end 31 when energized.

[0043] In the heating component 100 of this application embodiment, the first electrode 30 includes a separately formed top end 31 and a main body 32. The top end 31 is used to participate in the discharge and has a low thermal conductivity, while the main body 32 has a high thermal conductivity and is connected to the top end 31. This allows the high temperature of the top end 31 to be quickly conducted downwards through the main body 32 during discharge, thereby reducing the ablation and sputtering of the first electrode 30 and improving the service life of the heating component 100. At the same time, reducing electrode ablation and sputtering also reduces the risk of insulation failure of the inner tube 20 and outer tube 10 due to electrode sputtering, improving reliability and helping to maintain a reasonable distribution of the discharge temperature field throughout the service life.

[0044] It should be noted that the first electrode 30 and the second electrode 40 discharge and generate plasma when energized, which can generate high temperatures in a very short time, heating the aerosol to form a matrix and rapidly producing aerosols. Both the outer tube 10 and the inner tube 20 are insulating tubes.

[0045] Specifically, the outer tube 10 has a closed end 12 and an open end 11 at its two axial ends, respectively. Components such as the inner tube 20, the first electrode 30, and the second electrode 40 can be inserted into the outer tube 10 from the open end 11. For ease of explanation, this application defines the direction along the axial direction of the outer tube 10 from the closed end 12 to the open end 11 as the direction from top to bottom.

[0046] The closed end 12 can be formed with a pointed structure. The heating component 100 can be inserted into the aerosol generating matrix through the pointed structure of the outer tube 10 to generate high temperature inside the aerosol generating matrix and improve the heating rate.

[0047] The first electrode 30 is generally rod-shaped, with the top end 31 and the main body 32 axially joined together, and the axial length of the top end 31 is much smaller than the axial length of the main body 32. The top end 31 and the main body 32 can be formed separately and then connected as one piece, for example, the top end 31 and the main body 32 can be fixedly connected by welding, pressing or other methods.

[0048] The tip 31 can be made of a high-temperature resistant conductive material. For example, the tip 31 can be made of nickel, iron, niobium, tantalum, tungsten, chromium or an alloy containing one or more of the above metal elements. Alternatively, the tip 31 can be made of materials such as metal ceramics or semiconductor ceramics.

[0049] The main body 32 is made of a material with a higher thermal conductivity than the tip 31 to accelerate the heat dissipation of the first electrode 30. For example, the main body 32 may be made of metal materials such as copper, silver, or gold, or an alloy material containing one or more of these metal elements.

[0050] Optionally, the thermal conductivity of the main body 32 is greater than 200 W / (m*K).

[0051] Optionally, the outer tube 10, inner tube 20, first electrode 30, and second electrode 40 can be arranged approximately coaxially. Increasing the coaxiality is beneficial to improving the circumferential uniformity of the temperature distribution. In the following description, axial, radial, and circumferential directions respectively indicate the common axial, radial, and circumferential directions of the outer tube 10, inner tube 20, first electrode 30, and second electrode 40.

[0052] Please see Figure 2 and Figure 3 In some embodiments, the radial dimension D1 of the top end 31 is greater than or equal to the radial dimension D2 of the main body 32.

[0053] Thus, by making the radial dimension D1 of the top end 31 greater than or equal to the radial dimension D2 of the main body 32, the overall radial dimension of the first electrode 30 is kept as small as possible, and it is also beneficial that the end face of the main body 32 is easily completely covered by the top end 31 when the top end 31 and the main body 32 are docked, thereby reducing the impact of the misalignment between the top end 31 and the main body 32.

[0054] Specifically, the cross-sectional shape of the first electrode 30 (including the top end 31 and the main body 32) can be circular, elliptical, triangular, quadrilateral, polygonal, or other shapes. The radial dimension of the first electrode 30 (including the top end 31 and the main body 32) refers to the dimension in multiple directions passing through the geometric center on the cross-section, and is not limited to the diameter of the first electrode 30.

[0055] The lower end face of the top end 31 is pressed or welded to the upper end face of the main body 32. To reduce current loss, the lower end face of the top end 31 and the upper end face of the main body 32 are made to overlap as much as possible. The cross-sectional shapes of the top end 31 and the main body 32 are the same, and the radial dimension D1 of the top end 31 and the radial dimension D2 of the main body 32 can be the same. Since eccentricity is prone to occur when the top end 31 and the main body 32 are joined, the radial dimension D1 of the top end 31 is slightly larger than the radial dimension D2 of the main body 32. This ensures that the size of the longer main part of the first electrode 30 does not increase, retaining the advantage of structural miniaturization. At the same time, it makes the upper end face of the main body 32 fall within the range of the lower end face of the top end 31 as much as possible, reducing the impact of eccentricity between the top end 31 and the main body 32.

[0056] Please see Figure 2 and Figure 3 In some embodiments, the axial dimension L of the top end 31 ranges from 0.5 mm to 3.0 mm (including the endpoint); and / or, the radial dimension D1 of the top end 31 ranges from 0.5 mm to 0.8 mm (including the endpoint).

[0057] Thus, by keeping the axial dimension L and / or radial dimension D1 of the tip 31 within a reasonable range, while keeping the size of the first electrode 30 small, the tip 31 of the discharge has a relatively blunt shape, thereby minimizing electrode sputtering and improving the service life of the heating component 100.

[0058] Specifically, the top end 31 can be a short and thick cylindrical structure. Taking a circular cross-section as an example, the top end 31 is cylindrical in shape. The axial dimension L of the top end 31 is its length, and the radial dimension D1 is its diameter. The axial dimension L of the top end 31 can be 0.5mm, 0.58mm, 0.6mm, 0.75mm, 0.9mm, 1.0mm, 2.1mm, 3.0mm, etc., and the radial dimension D1 of the top end 31 can be 0.5mm, 0.54mm, 0.62mm, 0.7mm, 0.8mm, etc.

[0059] Furthermore, the axial dimension L of the tip 31 ranges from 0.5mm to 1.0mm. That is, the axial dimension L and the radial dimension D1 of the tip 31 are quite close.

[0060] Please see Figure 2 and Figure 3 In some embodiments, the end face of the top end 31 opposite to the second electrode 40 is a plane.

[0061] Thus, the end face of the tip 31 opposite to the second electrode 40, that is, the discharge end face, is a plane. Compared with the protruding discharge tip, the discharge end face of the tip 31 is a plane, which can ensure effective discharge while avoiding the tip 31 being burned too quickly.

[0062] Specifically, the upper surface of the tip 31 can be axially aligned with the second electrode 40. When the first electrode 30 and the second electrode 40 are energized, plasma is generated by discharge between the upper surface of the tip 31 and the lower surface of the second electrode 40. The upper surface of the tip 31 is in a high-voltage electric field and high-temperature environment. Compared to forming a sharp end, the flat upper surface of the tip 31 is less prone to ablation. The upper surface of the tip 31 can be polished to form a smooth surface. Furthermore, the roughness Ra of the upper surface of the tip 31 is ≤ 6.3.

[0063] Please see Figure 2 and Figure 3 In some embodiments, the surface of the main body 32 is provided with a first plating layer 321, which is a high heat-resistant metal layer.

[0064] Thus, by providing a first plating layer 321 on the surface of the main body 32, which is a high heat-resistant metal layer, oxidation of the first electrode 30 is avoided to a certain extent, thereby improving its service life.

[0065] Specifically, the first plating layer 321 can be a gold plating layer, a nickel plating layer, a chromium plating layer, etc.

[0066] Optionally, see Figure 2 river Figure 5 The first electrode 30 also includes an electrode disk 33, which can be sleeved on the end of the main body 32 away from the top end 31. The electrode disk 33 can promote heat conduction and heat dissipation of the main body 32, and also has a limiting and supporting function.

[0067] Optionally, the end of the first electrode 30 furthest from the top end 31 can be connected to the power supply circuit via a lead.

[0068] Please see Figure 2 and Figure 4 In some embodiments, the second electrode 40 includes a discharge end 41 and a fixing part 42 connected to each other. The discharge end 41 extends at least partially into the opening of the first end 21 and is opposite to the top end 31. The discharge end 41 is used to discharge when energized. The thermal conductivity of the fixing part 42 is greater than that of the discharge end 41.

[0069] Thus, by extending at least partially into the opening of the first end 21 and facing the top end 31, the discharge end 41 and the top end 31 of the first electrode 30 discharge when connected to electricity. The thermal conductivity of the fixing part 42 is greater than that of the discharge end 41, so the fixing part 42 can conduct heat quickly, reducing the sputtering and ablation of the second electrode 40, thereby improving its service life.

[0070] Specifically, the thermal conductivity of the fixing part 42 can be greater than 200 W / (m*K). The fixing part 42 can be made of metal materials such as copper, silver, and gold, or alloy materials containing one or more of the above metal elements. The thermal conductivity of the discharge end 41 is lower than that of the fixing part 42, and the discharge end 41 can be made of a highly heat-resistant conductive material. For example, the discharge end 41 can be made of nickel, iron, niobium, tantalum, tungsten, chromium, or alloy materials containing one or more of the above metal elements. Alternatively, the discharge end 41 can be made of materials such as cermet or semiconductor ceramic.

[0071] When the first electrode 30 and the second electrode 40 are energized, the discharge end 41 and the fixing part 42 can be the positive (or negative) terminals connected to the power supply circuit (not shown), and the top end 31 and the main body part 32 can be the negative (or positive) terminals connected to the power supply circuit. The top end 31 and the discharge end 41 are opposite to and spaced apart in the inner tube 20, and plasma is generated by discharge in the opposite and spaced interval.

[0072] The discharge end 41 can be axially aligned with the first electrode 30 within the inner tube 20. The fixing part 42 can be disposed outside the inner tube 20, offset axially from the first electrode 30. The fixing part 42 is used for conducting electricity and heat and provides support for the discharge end 41, thus serving to fix the installation.

[0073] Optionally, the heating element 100 further includes a conductive element 50 disposed on the outer wall surface of the inner tube 20, connected to the second electrode 40 at a first end 21, and extending downward from the first end 21. The lower end of the conductive element 50 may extend outside the outer tube 10. The conductive element 50 may continue to extend outside the outer tube 10 in a direction away from the first electrode 30, connecting to a power supply circuit. The conductive element 50 may be a lead wire or a conductive film layer.

[0074] Please see Figure 2 , Figure 4 and Figure 6 In some embodiments, the fixing part 42 abuts against the end face of the first end 21, the fixing part 42 is formed with a mounting hole 421, the mounting hole 421 communicates with the opening of the first end 21, and the discharge end 41 passes through the mounting hole 421 and the opening of the first end 21.

[0075] Thus, by fixing part 42 abutting against the end face of first end 21 and forming mounting hole 421 communicating with the opening of first end 21, discharge end 41 passes through mounting hole 421 and opening of first end 21, so mounting hole 421 and opening of first end 21 can jointly restrict radial positioning of discharge end 41, improve coaxiality of discharge end 41 with inner tube 20, and install more stably, and also improve insulation reliability between inner tube 20 and second electrode 40.

[0076] Specifically, the mounting hole 421 extends axially through the fixing part 42, and the mounting hole 421 may be directly opposite to and connected to the opening of the first end 21. The fixing part 42 may be a relatively thick ring, and the outer contour shape of the cross-section of the fixing part 42 may be the same as or different from the cross-sectional shape of the inner tube 20. In order to make the structure compact, the fixing part 42 may be a hollow ring structure, and the lower end face of the fixing part 42 is in contact with the end face of the first end 21.

[0077] The discharge end 41 can be in the shape of a short nail. The axial direction of the discharge end 41 is consistent with the axial direction of the inner tube 20. The discharge end 41 can pass through the mounting hole 421 and the opening of the first end 21 sequentially from top to bottom. The lower end face of the discharge end 41 is lower than the end face of the first end 21, and is axially aligned with the upper end face of the top end 31 in the inner tube 20, and is spaced at a certain distance.

[0078] Please see Figure 4 and Figure 6 In some embodiments, the surface of the fixing part 42 is provided with a second plating layer 422, which is a high heat-resistant metal layer.

[0079] Thus, by providing a second plating layer 422 on the surface of the fixing part 42, the second plating layer 422 being a high heat-resistant metal layer, the oxidation of the second electrode 40 is slowed down or even avoided, thereby improving its service life.

[0080] Specifically, the first plating layer 321 can be a gold plating layer, a nickel plating layer, a chromium plating layer, etc.

[0081] Please see Figure 1 and Figure 2 The aerosol generating apparatus 1000 of the present application includes the heating component 100 of any of the above embodiments.

[0082] In the aerosol generating apparatus 1000 of this application embodiment, the first electrode 30 includes a separately formed top end 31 and a main body 32. The top end 31 is used to participate in the discharge and has a low thermal conductivity, while the main body 32 has a high thermal conductivity and is connected to the top end 31. This allows the high temperature of the top end 31 to be quickly conducted downwards through the main body 32 during discharge, thereby reducing the ablation and sputtering of the first electrode 30 and improving the service life of the heating component 100. At the same time, reducing electrode ablation and sputtering also reduces the risk of insulation failure of the inner tube 20 and outer tube 10 due to electrode sputtering, improving reliability and helping to maintain a reasonable distribution of the discharge temperature field throughout its service life.

[0083] Specifically, the aerosol generating device 1000 may further include a power supply circuit (not shown) and a control component (not shown). The power supply circuit is electrically connected to the first electrode 30 and the second electrode 40 and supplies power to the first electrode 30 and the second electrode 40. The control component is used to control the output voltage and switching of the power supply circuit, thereby controlling the start and end time of heating and adjusting the heating temperature.

[0084] Please see Figure 2 In some embodiments, the aerosol generating device 1000 includes a support 60, the support 60 having a mounting groove 601, an outer tube 10 inserted into the mounting groove 601, and an adhesive 62 between the outer tube 10 and the groove wall of the mounting groove 601 to bond the outer tube 10 and the support 60.

[0085] Thus, by setting adhesive 62 between the outer tube 10 and the wall of the mounting groove 601 to bond the outer tube 10 and the bracket 60, the outer tube 10 can be fixedly installed on the bracket 60 in a vertical position with small eccentricity. Furthermore, the outer tube 10 and the bracket 60 are connected as one unit, which is conducive to the modularization and integration of components, thereby reducing the risk of the outer tube 10 breaking and improving the structural reliability of the aerosol generating device 1000 under conditions such as drops and external impacts.

[0086] Specifically, the bracket 60 can be a box-shaped or tripod-shaped structure, and the mounting groove 601 can be an open groove with its opening facing the closed end 12 of the outer tube 10. The open end 11 of the outer tube 10 is accommodated in the mounting groove 601, and the end face of the open end 11 can be in direct contact with the bottom surface of the mounting groove 601 or spaced apart from the bottom surface of the mounting groove 601. The bottom surface of the mounting groove 601 can be a flat surface or a curved surface.

[0087] With the axial direction of the outer tube 10 as the vertical direction, the outer tube 10 can be vertically inserted into the mounting groove 601. The outer tube 10 can be inserted at the center of the mounting groove 601 or the bracket 60 in the transverse direction, with the geometric center of the cross-section of the outer tube 10 collinear with the geometric center of the cross-section of the mounting groove 601 (or bracket 60) in the vertical direction. For example, the mounting groove 601 is a circular groove, and the cross-section of the outer tube 10 is concentric with that of the mounting groove 601. This arrangement ensures a more uniform transverse stress distribution under external impact, facilitating stress dispersion and reducing the risk of breakage.

[0088] Adhesive 62 can be formed by pouring a fluid adhesive between the outer tube 10 and the wall of the mounting groove 601 and allowing it to cure. The adhesive used in adhesive 62 can be epoxy resin glue. During the pouring process, the adhesive can fully cover the wall of the mounting groove 601 and the outer wall of the outer tube 10, and fully fill the gap between the wall of the mounting groove 601 and the outer tube 10, thereby ensuring stable bonding after curing. In the event of a drop or external impact, the outer tube 10 and the bracket 60 are not prone to relative displacement, the outer tube 10 is stably supported, and the drop resistance reliability is high.

[0089] In some embodiments, the end face of the open end 11 may be in direct contact with the bottom surface of the mounting groove 601, and the adhesive 62 may cover the groove wall and bottom surface of the mounting groove 601, as well as the outer wall surface of the outer tube 10 extending into the mounting groove 601, and bond the groove wall and bottom surface of the mounting groove 601 with the outer wall surface of the outer tube 10.

[0090] In other embodiments, the end face of the open end 11 is spaced apart from the bottom surface of the mounting groove 601, and the adhesive 62 covers the groove wall and bottom surface of the mounting groove 601, the outer wall surface of the outer tube 10 extending into the mounting groove 601, and the end face of the open end 11. The adhesive 62 fills the space between the groove wall and bottom surface of the mounting groove 601 and the outer tube 10 and bonds the bracket 60 to the outer tube 10.

[0091] In other embodiments, the end face of the open end 11 is separated from the bottom surface of the mounting groove 601 by a buffer 23, which can be a soft rubber sleeve, a flexible rubber pad, foam, etc. Adhesive 62 covers part of the groove wall of the mounting groove 601 and the outer wall surface of the outer tube 10 extending into the mounting groove 601, and bonds the groove wall of the mounting groove 601 and the outer wall surface of the outer tube 10.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some implementations," "some embodiments," "exemplary," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat generating component, characterized by The heating assembly comprises: an outer tube comprising a closed end; an inner tube sleeved in the outer tube, the inner tube comprising a first end close to the closed end, the first end being formed with an opening; a first electrode extending into the inner tube, the first electrode comprising a top end and a main body part separately formed and connected with each other, the main body part having a thermal conductivity greater than that of the top end; and a second electrode arranged at the opening of the first end and opposite and spaced from the top end, the second electrode and the first electrode being configured to discharge in the interval opposite and spaced from the top end when powered. The radial dimension of the top end is greater than or equal to the radial dimension of the main body part.

2. The heat generating component of claim 1, wherein, The axial dimension of the top end ranges from 0.5 mm to 3.0 mm; and / or, the radial dimension of the top end ranges from 0.5 mm to 0.8 mm.

3. The heat generating component of claim 1, wherein, The end face of the top end opposite the second electrode is a plane.

4. The heat generating component of claim 1, wherein, The surface of the main body part is provided with a first plating layer, the first plating layer being a high-heat-resistant metal layer, the first plating layer constituting the top end.

5. The heat generating component of claim 1, wherein, The second electrode comprises a discharge end and a fixing part connected with each other, the discharge end at least partially extending into the opening of the first end opposite the top end, the discharge end being used for discharging when powered, the fixing part having a thermal conductivity greater than that of the discharge end.

6. The heat generating component of claim 1, wherein, The fixing part abuts against the end face of the first end, the fixing part being formed with a mounting hole, the mounting hole being in communication with the opening of the first end, the discharge end being arranged in the mounting hole and the opening of the first end.

7. The heat generating assembly of claim 6, wherein, The surface of the fixing part is provided with a second plating layer, the second plating layer being a high-heat-resistant metal layer.

8. The heat generating component of claim 6, wherein, The aerosol-generating device comprises the heating assembly according to any one of claims 1 to 8.

9. An aerosol-generating device comprising, The aerosol-generating device comprises a support provided with a mounting groove, the outer tube being inserted into the mounting groove, and an adhesive being arranged between the outer tube and the groove wall of the mounting groove to bond the outer tube and the support.

10. The aerosol-generating device of claim 9, wherein, ​

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