Heating assembly and aerosol generation device

Abstract

A heating assembly (100) and an aerosol generation device. The heating assembly (100) is used for heating an atomization medium; the heating assembly (100) comprises an accommodating tube (10) and an elastic heating element (20); the accommodating tube (10) is used for accommodating the atomization medium; the elastic heating element (20), taken as a whole, is cylindrical and is at least radially elastic; the elastic heating element (20) is sleeved on the accommodating tube (10); and the elastic heating element (20) has an elastic recovery tendency to reduce the radial dimension.

Description

Heating components and aerosol generating devices

[0001] Priority information

[0002] This application claims priority and benefits to patent application No. 202411004451.2, filed with the China National Intellectual Property Administration on July 25, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of atomization technology, and more specifically, to a heating element and an aerosol generating device. Background Technology

[0004] In aerosol generators with peripheral heating, heating elements such as heating wires, heating strips, and heating plates are typically wrapped around the outside of a quartz glass tube to heat the atomized medium inside the tube, in order to quickly reach a high heating temperature. However, because the surface of the quartz glass tube is smooth, it is difficult for the metal wire to fit snugly against the tube, leading to problems such as heat loss and inaccurate temperature control. Summary of the Invention

[0005] This application provides a heating element and an aerosol generating device, which are at least used to improve the fit between the heating element and the glass tube.

[0006] The heating element of this application embodiment is used to heat an atomizing medium. The heating element includes a accommodating tube and an elastic heating element. The accommodating tube is used to contain the atomizing medium; the elastic heating element is cylindrical in shape and has elasticity at least in the radial direction. The elastic heating element is sleeved on the accommodating tube and has an elastic recovery tendency to reduce its radial dimension.

[0007] In the heating assembly of this application embodiment, the elastic heating element is sleeved on the receiving tube and has an elastic recovery tendency to reduce its radial dimension, allowing the elastic heating element to automatically conform to the receiving tube, thereby reducing heat loss and facilitating accurate adjustment of the heating temperature. Furthermore, since the elastic heating element can automatically conform to the receiving tube, a fixing device for fixing the elastic heating element to the wall of the receiving tube is eliminated.

[0008] In some embodiments, the radial dimension of the elastic heating element in the separated state from the receiving tube is smaller than the radial dimension of the receiving tube.

[0009] In this way, the radial dimension of the elastic heating element expands under the action of external force during assembly, allowing it to be fitted onto the receiving tube. Since the radial dimension of the elastic heating element is smaller than that of the receiving tube when it is separated from the receiving tube, the elastic heating element will rebound and stick tightly to the outer wall of the receiving tube, thereby ensuring that the elastic heating element sticks tightly to the receiving tube during the heating process, improving heat transfer efficiency, and saving additional fixing devices.

[0010] In some embodiments, the elastic heating element includes a plurality of surrounding portions and a connecting portion extending circumferentially along the receiving tube. The plurality of surrounding portions are arranged at intervals along the axial direction of the receiving tube, and the connecting portion connects two adjacent surrounding portions along the axial direction of the receiving tube. The surrounding portions are elastic.

[0011] Thus, due to the elasticity of the surrounding parts, their arrangement around the receiving tube and at intervals along the axial direction of the receiving tube facilitates a more uniform circumferential deformation of the elastic heating element relative to the receiving tube. The connecting part connects two adjacent surrounding parts along the axial direction of the receiving tube, ensuring that each surrounding part can be connected to the same circuit when the elastic heating element is energized. Furthermore, the interval arrangement of the surrounding parts increases the resistance in the circuit, which is beneficial for increasing the heating power.

[0012] In some embodiments, two adjacent connecting portions are spaced apart circumferentially along the axial direction of the receiving tube; and / or, the projection of the circumferential portion onto a reference plane perpendicular to the axial direction of the receiving tube is a closed loop; and / or, the ends of the receiving tube along the axial direction are a first end and a second end, and the circumferential portion includes a first part extending toward the first end and a second part extending toward the second end circumferentially along the receiving tube, with the first part and the second part alternately arranged along the extension path of the circumferential portion.

[0013] Thus, by arranging two adjacent connecting parts along the axial direction of the receiving tube at intervals in the circumferential direction of the receiving tube, the connecting parts are staggered along the circumferential direction of the receiving tube, providing a relatively sufficient deformation allowance for the elastic heating element.

[0014] By setting the surrounding portion to form an annular projection on a reference plane perpendicular to the axial direction of the receiving tube along the axial direction of the receiving tube, it is ensured that the circumferential contact range between the elastic heating element and the receiving tube is sufficient to support the elastic heating element to produce elastic deformation in all radial directions.

[0015] By alternating the arrangement of the first and second parts forming an angle in the surrounding section, the length of the surrounding section is increased, which allows for a larger deformation margin in the radial elastic deformation of the elastic heating element, and also increases the heating area.

[0016] In some embodiments, the extension path of the surrounding portion along the circumference of the receiving tube is a curve; or, the extension path of the surrounding portion along the circumference of the receiving tube is a broken line.

[0017] In this way, by extending the circumference of the receiving tube along a curved or zigzag path, the length of the circumference ...

[0018] In some embodiments, when the accommodating tube is separated from the elastic heating element, the accommodating tube has a first dimension in the radial direction, which is less than or equal to the radial dimension of the elastic heating element; when the elastic heating element is fitted onto the accommodating tube, the accommodating tube has a second dimension in the radial direction, which is greater than the first dimension and greater than the radial dimension when the elastic heating element is separated from the accommodating tube.

[0019] Thus, by having a smaller radial dimension than the elastic heating element when the accommodating tube is separated from the elastic heating element, the elastic heating element can be easily fitted onto the accommodating tube. When fitted onto the elastic heating element, the radial dimension of the accommodating tube can increase from the first dimension to the second dimension, causing the elastic heating element to undergo radial expansion elastic deformation and have an elastic recovery tendency to shrink the radial dimension, thereby ensuring that the elastic heating element is fitted onto the accommodating tube and fits the accommodating tube fully.

[0020] In some embodiments, the heating element includes a housing that surrounds the receiving tube and encloses the resilient heating element.

[0021] In this way, by surrounding the housing tube and enclosing the elastic heating element, the cover provides support and protection for the housing tube and the elastic heating element, and can also provide heat insulation to a certain extent.

[0022] In some embodiments, the cover and the elastic heating element are spaced apart, and the inner surface of the cover is provided with an infrared reflective layer; and / or, the cover includes a cylinder and a cover plate, the cylinder surrounds the receiving tube, and the cover plate and the cylinder cover together cover the end of the cylinder along the axial direction of the receiving tube.

[0023] Thus, by spaced apart from the elastic heating element and with an infrared reflective layer on the inner surface of the cover, the heat radiated outward by the elastic heating element is reflected back into the receiving tube, reducing outward heat transfer and improving heat utilization. The cylinder surrounds the receiving tube, and the cover plate and cylinder cap together cover the end of the cylinder along the axial direction of the receiving tube, thus achieving relatively comprehensive coverage of the receiving tube and the elastic heating element.

[0024] In some embodiments, the heating element further includes a fixing device for securing the connecting cylinder and the cover plate.

[0025] In this way, the cylinder and cover are fixedly connected by a fixing device, thereby reinforcing the cover as a whole and ensuring structural stability.

[0026] In some embodiments, the heating assembly includes a contact portion electrically connected to the elastic heating element, a cover surrounding the housing tube and enclosing the elastic heating element, and a fixing device for fastening the cover. The contact portion is fixedly connected to the elastic heating element and passes through the cover and the fixing device.

[0027] Thus, by passing the electrical connection part through the cover and the fixing device, the electrical connection part is fixedly connected to the elastic heating element, so that the two ends of the elastic heating element in the axial direction can be fixed to the first end and the second end of the receiving tube respectively through the electrical connection part.

[0028] The aerosol generating apparatus of this application includes the heating component of any of the above embodiments.

[0029] The aerosol generating apparatus of this application includes the heating component of the above-described embodiment, and therefore has all the beneficial effects of the heating component of the above-described embodiment.

[0030] 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

[0031] 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:

[0032] Figure 1 is a schematic diagram of the structure of the heating component according to an embodiment of this application;

[0033] Figure 2 is a schematic diagram of the heating component according to an embodiment of this application from a top view.

[0034] Figure 3 is a cross-sectional view of the heating element in Figure 2 along the AA direction;

[0035] Figure 4 is an exploded structural diagram of the heating component according to an embodiment of this application;

[0036] Figure 5 is a schematic diagram of the structure of the elastic heating element according to an embodiment of this application;

[0037] Figure 6 is a schematic diagram of the structure of an elastic heating element according to another embodiment of this application;

[0038] Figure 7 is a structural schematic diagram of an elastic heating element according to another embodiment of this application.

[0039] Explanation of main component symbols: 100, heating element; 10, receiving tube; 11, first end; 12, second end; 20, elastic heating element; 21, surrounding part; 211, first part; 212, second part; 213, third part; 22, connecting part; 23, electrical connection part; 30, cover; 301, infrared reflective layer; 33, cylinder; 331, mounting hole; 34, cover plate; 40, fixing device; 41, fixing plate; 411, screw hole; 42, locking screw. Detailed Implementation

[0040] 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.

[0041] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] 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.

[0043] 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," "over," and "on top" of the second feature includes the first feature being 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," "below," and "under" the second feature includes the first feature being 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.

[0044] 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.

[0045] Please refer to Figures 1-4. The heating component 100 of this embodiment is used to heat the atomizing medium (not shown). The heating component 100 includes a receiving tube 10 and an elastic heating element 20. The receiving tube 10 is used to contain the atomizing medium; the elastic heating element 20 is cylindrical in shape and has elasticity at least in the radial direction. The elastic heating element 20 is sleeved on the receiving tube 10 and has an elastic recovery tendency to reduce its radial dimension.

[0046] In the heating assembly 100 of this application embodiment, the elastic heating element 20 is sleeved on the receiving tube 10 and has an elastic recovery tendency to reduce its radial dimension, so that the elastic heating element 20 can automatically conform to the receiving tube 10, thereby reducing heat loss and facilitating accurate adjustment of the heating temperature. In addition, since the elastic heating element 20 can automatically conform to the receiving tube 10, the fixing device for fixing the elastic heating element 20 to the wall of the receiving tube 10 is also eliminated.

[0047] Specifically, the elastic heating element 20 exhibiting a tendency to shrink its radial dimension due to elastic recovery means that the radial dimension of the elastic heating element 20 in the separated state from the receiving tube 10 is smaller than its radial dimension in the state of being fitted onto the receiving tube 10. Therefore, the elastic heating element 20 remains in an expanded, elastically deformed state while fitted onto the receiving tube 10. In the fitted state, the elastic heating element 20 adheres tightly to the outer wall of the receiving tube 10 and applies a radial elastic force to the receiving tube 10. The receiving tube 10 applies a radial supporting force to the elastic heating element 20, opposite to the direction of the elastic force.

[0048] Atomizing media are substances that, after being processed and heated, can generate aerosols. The atomizing medium can be in a fully solid, semi-solid, or liquid state. For example, solid atomizing media can be plant flowers, stems, or leaves prepared using processes such as rolling, slurry preparation, die casting, or extrusion. Liquid atomizing media can include liquid compositions based on plant extracts and / or various flavorings.

[0049] The receiving tube 10 can be a hollow tube, and at least one of its two ends in its axial direction forms a through hole to accommodate the atomizing medium inserted into the hollow section of the receiving tube 10. The cross-sectional shape of the receiving tube 10 can be circular, elliptical, triangular, square, rhomboid, polygonal, star-shaped, racetrack-shaped, or other irregular shapes, and this application does not impose any limitations on this. For example, the cross-sectional shape of the receiving tube 10 is circular, and the receiving tube 10 is a hollow circular tube with both ends connected.

[0050] It should be noted that, unless otherwise specified, in this application, "axial" refers to the axial direction of the receiving tube 10, "circumferential" refers to the direction perpendicular to the axial direction and surrounding the outer wall of the receiving tube 10, and "radial" refers to the direction perpendicular to both the axial and circumferential directions. The definitions of "axial," "circumferential," and "radial" also apply in embodiments where the cross-section of the receiving tube 10 is not circular.

[0051] The receiving tube 10 can be insulated and made of a transparent heat-resistant material so that the receiving tube 10 can transmit infrared radiation generated by the heating element 20, thereby improving heating efficiency and heat resistance reliability. For example, the receiving tube 10 can be made of glass, quartz glass, transparent ceramics, etc.

[0052] Optionally, the receiving tube 10 can withstand a temperature range of over 600°C.

[0053] It is understood that the elastic heating element 20 is sleeved on the receiving tube 10 and closely adheres to the outer wall of the receiving tube 10, and the cross-sectional shape of the elastic heating element 20 is the same as that of the receiving tube 10. The cross-sectional shape of the elastic heating element 20 in the detached state is not limited. To improve the circumferential uniformity of the elastic force applied by the elastic heating element 20 to the receiving tube 10, an elastic heating element 20 with the same cross-sectional shape as the receiving tube 10 in the detached state can be used. For example, the elastic heating element 20 is generally cylindrical.

[0054] Optionally, the elastic heating element 20 can be made into a cylindrical integral structure from sheet-like, strip-like, or thin-plate-like raw materials or semi-finished products through bending, layering, nesting, weaving, twisting, hollowing, cutting, etc. The wall thickness direction of the elastic heating element 20 can be consistent with the radial direction of the receiving tube 10 to increase the contact area between the inner surface of the elastic heating element 20 and the receiving tube 10.

[0055] It should be noted that the radial dimension of the elastic heating element 20 in this application refers to the radial dimension of the cross-sectional shape of the elastic heating element 20. For example, the elastic heating element 20 is cylindrical, the receiving tube 10 is a circular tube, the diameter of the elastic heating element 20 in the state separated from the receiving tube 10 is smaller than the diameter of the elastic heating element 20 in the state sleeved with the receiving tube 10, and the diameter of the elastic heating element 20 in the state sleeved with the receiving tube 10 is equal to or slightly larger than the outer diameter of the receiving tube 10.

[0056] The elastic heating element 20 has radial elasticity. When the elastic heating element 20 undergoes expansion elastic deformation, its radial dimension increases; when the elastic heating element 20 recovers its deformation, its radial dimension decreases. During the deformation and recovery process of the elastic heating element 20, its wall thickness may also change, but this is not intended to limit the implementation of this application.

[0057] Optionally, the elastic heating element 20 is conductive, and when connected to electricity, it converts electrical energy into heat energy to heat the atomizing medium. The elastic heating element 20 generates heat and its temperature rises, and the heat is transferred to the receiving tube 10 and the atomizing medium inside the receiving tube 10 through heat transfer and heat radiation.

[0058] In some embodiments, the radial dimension of the elastic heating element 20 in the separated state from the receiving tube 10 is smaller than the radial dimension of the receiving tube 10.

[0059] In the heating assembly 100 of this application embodiment, the elastic heating element 20 expands in radial dimension under the action of external force during assembly, and can be sleeved on the receiving tube 10. Since the radial dimension of the elastic heating element 20 in the separated state from the receiving tube 10 is smaller than the radial dimension of the receiving tube 10, the elastic heating element 20 will rebound and stick to the outer wall surface of the receiving tube 10, thereby ensuring that the elastic heating element 20 sticks to the receiving tube 10 during heating, improving heat transfer efficiency, and saving the additional fixing device 40.

[0060] Specifically, the elastic heating element 20 has radial elasticity. When separated from the receiving tube 10, the radial dimension of the elastic heating element 20 is smaller than that of the receiving tube 10. When fitted onto the receiving tube 10, the radial dimension of the elastic heating element 20 is equal to or slightly larger than that of the receiving tube 10. Therefore, the elastic heating element 20 is fitted onto the receiving tube 10 in an expanded elastic deformation state, and the elastic heating element 20 is tightly attached to the outer wall of the receiving tube 10. In this embodiment, the radial dimension of the receiving tube 10 is a fixed value.

[0061] For example, the elastic heating element 20 is cylindrical, and the receiving tube 10 is a cylindrical tube. The radial dimension of the elastic heating element 20 being smaller than that of the receiving tube 10 when detached means that the diameter of the elastic heating element 20 in the detached state is smaller than the outer diameter of the receiving tube 10. When the elastic heating element 20 is in contact with the receiving tube 10, the diameter of the elastic heating element 20 is equal to or slightly larger than the outer diameter of the receiving tube 10.

[0062] Please refer to Figures 4-7. In some embodiments, the elastic heating element 20 includes a plurality of surrounding portions 21 and a connecting portion 22 extending circumferentially along the receiving tube 10. The plurality of surrounding portions 21 are arranged at intervals along the axial direction of the receiving tube 10, and the connecting portion 22 connects two adjacent surrounding portions 21 along the axial direction of the receiving tube 10. The surrounding portions 21 are elastic.

[0063] Thus, because the surrounding portion 21 is elastic, its arrangement around the receiving tube 10 and at intervals along the axial direction of the receiving tube 10 facilitates a more uniform circumferential deformation of the elastic heating element 20 relative to the receiving tube 10. The connecting portion 22 connects two adjacent surrounding portions 21 along the axial direction of the receiving tube 10, so that when the elastic heating element 20 is energized, each surrounding portion 21 can be connected to the same circuit. In addition, the interval arrangement of the surrounding portions 21 also increases the resistance in the circuit, which is beneficial to increasing the heating power.

[0064] Specifically, the extensibility of the surrounding portion 21 means that the surrounding portion 21 has radial elasticity. When the surrounding portion 21 is fitted onto the receiving tube 10, the surrounding portion 21 undergoes elastic deformation, and its radial dimension increases to be greater than or equal to the radial dimension of the receiving tube 10. The connecting portion 22 can extend along the axial direction of the receiving tube 10, and its two ends are respectively connected to two adjacent surrounding portions 21. The connecting portion 22 has a certain degree of elasticity and can expand outward as the radial dimension of the surrounding portion 21 increases; this outward expansion refers to moving away from the center of the surrounding portion 21.

[0065] "Several surrounding portions 21" refers to two or more surrounding portions 21. Each pair of adjacent surrounding portions 21 along the axial direction of the receiving tube 10 can be connected to each other by one, two or more connecting portions 22. The surrounding portions 21 and the connecting portions 22 can be integrally formed to form a whole structure, or the surrounding portions 21 and the connecting portions 22 can be separately formed and connected to form a whole structure by welding or other means.

[0066] Optionally, the elastic heating element 20 is a cylindrical structure with a single-layer wall thickness, and the projection of the surrounding portion 21 onto the reference plane is circular or a narrow annular ring. In this embodiment, when the elastic heating element 20 undergoes elastic deformation, the diameter of the surrounding portion 21 increases, and the surrounding portion 21 applies an elastic force pointing towards the center of the circle to the receiving tube 10.

[0067] Optionally, the surrounding portion 21 is in the form of a strip or bar on the wall of the receiving tube 10, and the width of the surrounding portion 21 along the axial direction of the receiving tube 10 is greater than the thickness along the radial direction of the receiving tube 10, so as to increase the area of ​​the surrounding portion 21 in contact with the receiving tube 10.

[0068] Please refer to Figures 4 and 5. In some embodiments, two adjacent connecting portions 22 are spaced apart circumferentially along the axial direction of the receiving tube 10.

[0069] Thus, by having two adjacent connecting portions 22 along the axial direction of the receiving tube 10 spaced apart in the circumferential direction of the receiving tube 10, the connecting portions 22 are staggered in the circumferential direction of the receiving tube 10, providing a relatively sufficient deformation allowance for the elastic heating element 20.

[0070] Specifically, there are multiple connecting portions 22, which are distributed between every two adjacent surrounding portions 21 along the axial direction of the receiving tube 10. For example, every two adjacent surrounding portions 21 along the axial direction of the receiving tube 10 may be provided with two connecting portions 22, which are spaced apart circumferentially along the receiving tube 10. Furthermore, the connecting portions 22 connecting the same two surrounding portions 21 may be opposite each other radially along the receiving tube 10.

[0071] Two adjacent connecting portions 22 along the axial direction of the receiving tube 10 are spaced apart in the circumferential direction of the receiving tube 10, and the connecting portions 22 between each surrounding portion 21 and its upper and lower adjacent surrounding portions 21 are staggered in the circumferential direction of the receiving tube 10. This arrangement avoids the connecting portions 22 being arranged continuously along the axial direction of the receiving tube 10, but rather concentrated in a row in the circumferential direction, thereby avoiding the problem of uneven circumferential structure when the elastic heating element 20 undergoes radial elastic deformation. Along the axial direction of the receiving tube 10, the distance between two adjacent connecting portions 22 in the circumferential direction of the receiving tube 10 can be equal, further improving the circumferential uniformity of the elastic heating element 20 structure.

[0072] Optionally, the connecting portion 22 extends along the axial direction of the receiving tube 10 and is in the shape of a vertical strip.

[0073] Referring to Figure 4, in some embodiments, the projection of the surrounding portion 21 along the axial direction of the receiving tube 10 onto a reference plane perpendicular to the axial direction of the receiving tube 10 is a closed loop.

[0074] Thus, by setting the surrounding portion 21 to form an annular projection on a reference plane perpendicular to the axial direction of the receiving tube 10 along the axial direction of the receiving tube 10, it is ensured that the circumferential contact range between the elastic heating element 20 and the receiving tube 10 is sufficient to support the elastic heating element 20 to generate elastic deformation in each radial direction.

[0075] Specifically, at least one surrounding portion 21 on the elastic heating element 20 is in a closed loop shape, that is, at least one surrounding portion 21 completely surrounds the receiving tube 10. In the embodiment shown in FIG. 4, each surrounding portion 21 is in a closed loop shape, thus maximizing the circumferential fit between the elastic heating element 20 and the receiving tube 10. Alternatively, when the elastic heating element 20 has multiple surrounding portions 21, the outermost surrounding portion 21 in the axial direction can be in an open loop shape, while the surrounding portions 21 located between the two ends of the heating element in the axial direction are in a closed loop shape. The open loop-shaped surrounding portion 21 can surround half a circumference, three-quarters of a circumference, two-thirds of a circumference, etc., of the receiving tube 10.

[0076] Multiple circumferential portions 21 are arranged at intervals along the axial direction of the receiving tube 10, and the axial spacing between any two adjacent circumferential portions 21 can be equal.

[0077] Optionally, in some embodiments, the surrounding portion 21 extends circumferentially along the receiving tube 10 to form a single-loop annulus, thereby uniformly distributing circumferential and radial stresses and reducing the likelihood of cracking or breakage. Specifically, the surrounding portion 21 is tightly fitted to the outer wall of the receiving tube 10 and is in the form of a straight strip on the outer wall surface of the receiving tube 10. Optionally, the surrounding portion 21 may extend obliquely upward, obliquely downward, or perpendicular to the axial direction of the receiving tube 10 in the circumferential direction. Multiple annular surrounding portions 21 may be arranged parallel to each other on the outer wall of the receiving tube 10.

[0078] Please refer to Figures 3-7. In some embodiments, the accommodating tube 10 has a first end 11 and a second end 12 along the axial direction. The surrounding portion 21 includes a first portion 211 extending circumferentially toward the first end 11 and a second portion 212 extending toward the second end 12. The first portion 211 and the second portion 212 are arranged alternately on the extension path of the surrounding portion 21.

[0079] Thus, by alternating the arrangement of the first part 211 and the second part 212 forming an angle in the surrounding part 21, the length of the surrounding part 21 is increased, so that the radial elastic deformation of the elastic heating element 20 has a large deformation margin, and the heating area can also be increased.

[0080] Specifically, the direction along the axial direction of the receiving tube 10 from the first end 11 to the second end 12 is defined as the top-to-bottom direction. The first part 211 extends obliquely upward, and the second part 212 extends obliquely downward. The first part 211 and the second part 212 are arranged alternately and connected sequentially, forming a strip-like pattern of convex and concave alternating directions on the outer wall of the receiving tube 10. The connection between two connected first parts 211 and second parts 212 can be a smooth curve transition or a relatively sharp angle.

[0081] Each pair of adjacent circumferential portions 21 can be parallel to each other. That is, the first portion 211 on each circumferential portion 21 is aligned and parallel to each other along the axial direction of the receiving tube 10, and the second portion 212 on each circumferential portion 21 is aligned and parallel to each other along the axial direction of the receiving tube 10. In this embodiment, the spacing between two adjacent circumferential portions 21 is equal everywhere along the circumference of the receiving tube 10.

[0082] Referring to Figures 4-7, in some embodiments, the extension path of the surrounding portion 21 along the circumference of the receiving tube 10 is a curve. In other embodiments, the extension path of the surrounding portion 21 along the circumference of the receiving tube 10 is a broken line.

[0083] Thus, by extending the circumference of the circumference of the circumference of the accommodating tube 10 along a curved or zigzag path, the length of the circumference ...

[0084] Referring to Figure 5, the circumferential extension path of the surrounding portion 21 along the receiving tube 10 is curved, and the connection between the first portion 211 and the second portion 212 is a smooth curve. The first portion 211 and the second portion 212 are arranged alternately and connected sequentially, and the surrounding portion 21 forms a wavy strip pattern on the outer wall of the receiving tube 10. The wavy strip pattern of the surrounding portion 21 helps to disperse stress during elastic deformation and avoid problems such as cracking and breakage.

[0085] Referring to Figure 6, the extension path of the surrounding portion 21 along the circumference of the receiving tube 10 is a broken line, and a relatively sharp angle is formed at the connection between the first portion 211 and the second portion 212. The first portion 211 and the second portion 212 are arranged alternately and connected in sequence, and the surrounding portion 21 forms a broken line-shaped strip pattern on the outer wall of the receiving tube 10.

[0086] Referring to Figure 7, the circumferential extension path of the surrounding portion 21 along the receiving tube 10 is a broken line. The surrounding portion 21 also includes a third portion 213 extending tangentially along the cross-section of the receiving tube 10. The extension direction of the third portion 213 is also the left-right direction shown in the figure. In this embodiment, every two sets of first portions 211 and second portions 212, which are connected together and respectively convex upwards and concave downwards, together form a rhombus pattern. Each surrounding portion 21 has several rhombus patterns arranged at intervals. Two adjacent rhombus patterns on the same surrounding portion 21 are connected together by the third portion 213. The rhombus patterns of two axially adjacent surrounding portions 21 can be staggered circumferentially. The connecting portion 22 can be connected to the axially adjacent third portion 213.

[0087] This application does not limit the shape and structure of the surrounding portion 21, and the surrounding portion 21 may also extend along a tortuous path. The surrounding portion 21 may form various patterns such as semicircles, semi-ovals, triangles or other irregular shapes on the outer peripheral surface of the receiving tube 10.

[0088] In some embodiments, when the receiving tube 10 is separated from the elastic heating element 20, the receiving tube 10 has a first dimension in the radial direction, which is less than or equal to the radial dimension of the elastic heating element 20; when the elastic heating element 20 is sleeved on the receiving tube 10, the receiving tube 10 has a second dimension in the radial direction, which is greater than the first dimension and greater than the radial dimension of the elastic heating element 20 when it is separated from the receiving tube 10.

[0089] Thus, when the receiving tube 10 is separated from the elastic heating element 20, it has a radial dimension smaller than that of the elastic heating element 20, making it easy for the elastic heating element 20 to be fitted onto the receiving tube 10. When fitted onto the elastic heating element 20, the radial dimension of the receiving tube 10 can be increased from the first dimension to the second dimension, causing the elastic heating element 20 to undergo radial expansion elastic deformation and have an elastic recovery tendency to shrink the radial dimension, thereby ensuring that the elastic heating element 20 is fitted onto the receiving tube 10 and fully fits the receiving tube 10.

[0090] In this embodiment, the radial dimensions of both the receiving tube 10 and the elastic heating element 20 can be varied. The radial dimension of the receiving tube 10 can change locally in contact with the elastic heating element 20, or the radial dimension of the receiving tube 10 as a whole can change.

[0091] It should be noted that the first dimension is less than or equal to the radial dimension of the elastic heating element 20 in the state separated from the receiving tube 10, and the second dimension is greater than the radial dimension of the elastic heating element 20 in the state separated from the receiving tube 10, that is, the radial dimension of the elastic heating element 20 in the state without elastic deformation. The second dimension is also greater than the radial dimension of the receiving tube 10 with the first dimension.

[0092] Optionally, the receiving tube 10 is a rigid component or a combination of rigid bodies.

[0093] Optionally, the radial dimension of a portion of the receiving tube 10 is a first dimension when it is separated from the elastic heating element 20, and a second dimension when it is fitted with the elastic heating element 20. For example, the receiving tube 10 is provided with a movable protrusion (not shown). When the receiving tube 10 is separated from the elastic heating element 20, the protrusion is retracted inside the receiving tube 10 or within the tube wall, and the radial dimension of the protrusion is the first dimension. When the receiving tube 10 is fitted with the elastic heating element 20, the protrusion can be pushed outward, and the radial dimension of the protrusion increases to the second dimension.

[0094] Optionally, the protrusion surrounds the receiving tube 10 circumferentially. For example, the receiving tube 10 is a circular tube, and the protrusion is annular. Or, the protrusion includes a plurality of protrusions arranged circumferentially along the receiving tube 10.

[0095] Optionally, the receiving tube 10 is an elastic element with radial elasticity, or a combination structure with partial radial elasticity.

[0096] Please refer to Figures 1-4. In some embodiments, the heating assembly 100 includes a cover 30 that surrounds the receiving tube 10 and encloses the elastic heating element 20.

[0097] Thus, by surrounding the housing tube 10 and enclosing the elastic heating element 20 with the cover 30, the housing tube 10 and the elastic heating element 20 are supported and protected, and can be insulated to a certain extent.

[0098] Specifically, the cover 30 forms a relatively enclosed internal cavity, housing the accommodating tube 10 and the elastic heating element 20. To improve the circumferential uniformity of the temperature field, the cover 30 can be coaxial with the accommodating tube 10, and the cross-sectional shape of the cover 30 is the same as that of the cylinder 33. The axial ends of the cover 30 can mate with the two axial end faces of the accommodating tube 10, fixing the cover 30 relative to the accommodating tube 10 in a fixed installation.

[0099] Please refer to Figure 3. In some embodiments, the cover 30 and the elastic heating element 20 are spaced apart, and an infrared reflective layer 301 is provided on the inner surface of the cover 30.

[0100] Thus, by spaced apart from the elastic heating element 20 and with an infrared reflective layer 301 on the inner surface of the cover 30, the heat radiated outward by the elastic heating element 20 is reflected into the containment tube 10, reducing heat transfer outward and improving heat utilization.

[0101] Specifically, the cover 30 is placed over the accommodating tube 10 and the elastic heating element 20 and is spaced apart from the elastic heating element 20. The cover 30 and the accommodating tube 10 form a relatively closed cavity. Part of the heat generated by the elastic heating element 20 is transferred to the accommodating tube 10, and part of it is radiated outward and reflected by the infrared reflective layer 301 on the cover 30 and then reflected into the accommodating tube 10.

[0102] The infrared reflective layer 301 is disposed on the inner surface of the cover 30. The inner surface of the cover 30 includes at least the inner wall surface of the cylinder 33 facing the receiving tube 10 and the opposite side surface of the cover plates 34 at the upper and lower ends.

[0103] Please refer to Figures 3 and 4. In some embodiments, the cover 30 includes a cylinder 33 and a cover plate 34. The cylinder 33 surrounds the receiving tube 10, and the cover plate 34 covers the end of the cylinder along the axial direction of the receiving tube 10.

[0104] Thus, by having the cylinder 33 surround the receiving tube 10, and the cover plate 34 and the cylinder 33 cover and cover the end of the cylinder along the axial direction of the receiving tube 10, a relatively comprehensive covering of the receiving tube 10 and the elastic heating element 20 is achieved.

[0105] Specifically, the cylinder 33 has a hollow structure, and since the receiving tube 10 is a circular tube, the cylinder 33 can be a cylinder with a circular cross-section. The inner diameter of the cylinder 33 is larger than the diameter of the elastic heating element 20. The shape of the cover plate 34 matches the end face shape of the cylinder 33. For example, the cover plate 34 is circular, and its outer circumferential surface engages with the axial end face of the cylinder 33, while its inner circumferential surface engages with the axial end face of the receiving tube 10. The cover plate 34 and the cylinder 33 are combined into an integral structure.

[0106] The outer walls of the cover plate 34, the cylinder 33, and the accommodating tube 10 can form a closed reflective cavity. An infrared reflective layer 301 is provided on the inner surface of the cylinder 33 and the cover plate 34 to reflect the infrared rays emitted by the elastic heating element 20 at all angles.

[0107] The upper and lower end faces of the receiving tube 10 can mate with the cover plate 34. After the upper and lower cover plates 34 are locked and fixed to the cylinder 33, they are fixed within the entire cover 30 to prevent movement. The elastic heating element 20 is pre-assembled with the receiving tube 10 through a special process. When the receiving tube 10 and the elastic heating element 20 are disassembled, the outer diameter of the receiving tube 10 is larger than the inner diameter of the elastic heating element 20. Through an auxiliary process, the elastic heating element 20 undergoes elastic radial deformation and expansion during the assembly process, and then naturally shrinks after assembly, tightly binding itself to the wall of the receiving tube 10 to form a stable heating structure.

[0108] In some extended embodiments, the cover 30 can be a monolithic structure, or a structure consisting of two separate parts connected together to form a whole, or multiple separate parts connected together to form a whole.

[0109] Please refer to Figures 1-4. In some embodiments, the heating component 100 further includes a fixing device 40 for fixing the connecting cylinder 33 and the cover plate 34.

[0110] In this way, the cylinder 33 and the cover plate 34 are fixedly connected by the fixing device 40, thereby reinforcing the cover 30 as a whole and ensuring structural stability.

[0111] Specifically, the fixing device 40 includes two sets of fixing plates 41 and locking screws 42 respectively disposed at the first end 11 and the second end 12. The two fixing parts cover the opposite sides of the two cover plates 34 at the axial ends of the receiving tube 10. The fixing plate 41 may be annular and has a plurality of screw holes 411 spaced circumferentially, which penetrate the fixing plate 41 along the axial direction of the receiving tube 10. Mounting holes 331 are formed in the wall of the cylinder 33, which penetrate the upper and lower end faces of the cylinder 33 along the axial direction of the receiving tube 10. The screw holes 411 on the fixing plate 41 are correspondingly disposed with the through holes on the cover plate 34 and the mounting holes 331 on the cylinder 33. The locking screws 42 pass through the screw holes 411, the through holes on the cover plate 34 and the mounting holes 331 and are driven into the cover plate 34 and the cylinder 33, fixing the fixing plate 41, the cylinder 33 and the cover plate 34 together.

[0112] The above-described method of using the cover plate 34 and the locking screw 42 is only one embodiment of the present application and should not be regarded as a limitation on the embodiments of the present application. The fixing device 40 can also be fixedly connected to the cover 30 by welding, riveting, threaded connection, snap-fit ​​connection, adhesive connection, or other fasteners.

[0113] Please refer to Figures 2-4. In some embodiments, the heating assembly 100 includes a contact portion 23 electrically connected to the elastic heating element 20, a cover 30 surrounding the receiving tube 10 and surrounding the elastic heating element 20, and a fixing device 40 for fastening the cover 30. The contact portion 23 is fixedly connected to the elastic heating element 20 and passes through the cover 30 and the fixing device 40.

[0114] Thus, by passing the power receiving part 23 through the cover 30 and the fixing device 40, the power receiving part 23 is fixedly connected to the elastic heating element 20, so that the two ends of the elastic heating element 20 in the axial direction can be fixed to the first end 11 and the second end 12 of the accommodating tube 10 respectively through the power receiving part 23.

[0115] The external power supply or circuit is connected through the power connection part 23, thereby supplying power to the elastic heating element 20 to achieve inductive or resistive heating. At the same time, the heating temperature of the elastic heating element 20 can be controlled by the input power.

[0116] Specifically, the power connection part 23 can be a wire. The power connection part 23 is connected to the axial end of the elastic heating element 20 and extends through the cover 30 to the outside of the heating assembly 100, connecting to electronic components outside the heating assembly 100.

[0117] Optionally, the electrical connection part 23 is provided at the end of the elastic heating element 20 along the axial direction of the receiving tube 10.

[0118] Please refer to Figures 2-4. In some embodiments, there are multiple electrical contacts 23, which are spaced apart circumferentially along the receiving tube 10.

[0119] Thus, by providing multiple electrical connection points 23, the elastic heating element 20 can be connected to different power supply circuits and control circuits. The multiple electrical connection points 23 are arranged at intervals along the circumference of the accommodating tube 10 to reduce the risk of short circuits.

[0120] Specifically, the contact part 23 extends from inside the cover 30 to outside the heating element 100, and multiple contact parts 23 can extend from the upper and lower ends of the cover 30 respectively. Among the multiple contact parts 23, at least one set of contact parts 23 located at the upper and lower ends of the cover 30 is connected to an external power source, and the remaining contact parts 23 can be connected to capacitors, inductors, meters or other electronic components, so that the elastic heating element 20 can be connected to the control circuit to detect and adjust the current, power, temperature and other parameters of the elastic heating element 20.

[0121] Specifically, the fixing device 40 includes a fixing plate 41 and locking screws 42. The fixing plate 41 is fastened to the two end faces of the cylinder 33 along the axial direction by the locking screws 42, and is fixed to the cylinder 33 as a whole. At the same time, it presses down on the cover plate 34 and the power receiving part 23, which plays a connecting and fixing role and prevents the power receiving part 23 from affecting the elastic heating element 20 when it is assembled with external components. The power receiving part 23 can be fastened to the fixing plate 41 between the fixing plate 41 and the end faces of the cylinder 33 along the axial direction by the fixing plate 41.

[0122] The aerosol generating apparatus (not shown) according to the embodiments of this application includes the heating component 100 of any of the above embodiments.

[0123] The aerosol generating apparatus of this application includes the heating element 100 of the above-described embodiment, and therefore has all the beneficial effects of the heating element 100 of the above-described embodiment.

[0124] Specifically, an aerosol generating device is a structure capable of generating aerosols by acting on an atomizing medium through methods such as resistance heating or electromagnetic heating. The atomizing medium is heated and atomized to form aerosols, which 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 vapors. Aerosols may contain volatile compounds. Users can inhale the 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, including food, medicine, health care, and entertainment.

[0125] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "certain embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the 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.

[0126] 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 assembly for heating an atomization medium, wherein, The heating assembly comprises: a containing tube for containing an atomization medium; and an elastic heating body which is wholly cylindrical and has elasticity at least in the radial direction, the elastic heating body being sleeved on the containing tube, the elastic heating body having a tendency to recover to a reduced radial dimension.

2. The heat generating component of claim 1, wherein, The radial dimension of the elastic heating body in a state of being separated from the containing tube is smaller than the radial dimension of the containing tube.

3. The heat generating component of claim 2, wherein, The elastic heating body comprises a plurality of ring portions extending in the circumferential direction of the containing tube and connecting portions connecting two ring portions adjacent in the axial direction of the containing tube, the ring portions having elasticity.

4. The heat generating component of claim 3, wherein, In the axial direction of the containing tube, two adjacent connecting portions are arranged in the circumferential direction of the containing tube at intervals; and / or, a projection of the ring portion on a reference plane perpendicular to the axial direction of the containing tube in the axial direction of the containing tube is in the shape of a closed ring; and / or, the containing tube has a first end and a second end in the axial direction, the ring portion comprises a first portion extending in the circumferential direction of the containing tube towards the first end and a second portion extending towards the second end, the first portion and the second portion being arranged alternately in the extending path of the ring portion.

5. The heat generating component of claim 3, wherein, The extending path of the ring portion in the circumferential direction of the containing tube is a curve; or, the extending path of the ring portion in the circumferential direction of the containing tube is a broken line.

6. The heat generating component of claim 1, wherein, In a state of being separated from the elastic heating body, the containing tube has a first dimension in the radial direction, the first dimension being smaller than or equal to the radial dimension of the elastic heating body; In a state of the elastic heating body being sleeved on the containing tube, the containing tube has a second dimension in the radial direction, the second dimension being greater than the first dimension and greater than the radial dimension of the elastic heating body in the state of being separated from the containing tube.

7. The heat generating component of claim 1, wherein, The heating assembly comprises a cover surrounding the containing tube and enclosing the elastic heating body.

8. The heat generating component of claim 7, wherein, The cover is arranged at intervals from the elastic heating body, an inner surface of the cover being provided with an infrared reflection layer; and / or, the cover comprises a cylinder surrounding the containing tube and a cover plate covering an end of the cylinder in the axial direction of the containing tube, the heating assembly further comprising a fixing device for fixedly connecting the cylinder and the cover plate.

9. The heat generating component of claim 1, wherein, The heating assembly comprises an electricity connection portion electrically connected to the elastic heating body, a cover surrounding the containing tube and enclosing the elastic heating body, and a fixing device for fastening the cover, the electricity connection portion being fixedly connected to the elastic heating body and penetrating through the cover and the fixing device.

10. An aerosol-generating device comprising, The aerosol generating device comprises the heating assembly according to any one of claims 1-9.

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