Heating assembly and aerosol generating device

Abstract

The utility model discloses a heating assembly and an aerosol generating device. The heating assembly is used for heating the atomizing medium and comprises a containing pipe and an elastic heating body. Wherein the accommodating pipe is used for accommodating an atomizing medium; the whole elastic heating body is in a barrel shape, at least has elasticity in the radial direction, the elastic heating body is arranged on the containing pipe in a sleeved mode, and the elastic heating body has the elastic recovery trend of reducing the radial size. According to the heating assembly, the elastic heating body is arranged on the containing pipe in the sleeving mode and has the elastic recovery trend of reducing the radial size, so that the elastic heating body can be automatically attached to the containing pipe, it is guaranteed that the elastic heating body is tightly attached to the containing pipe in the heating process, the heat transfer efficiency is improved, and an additional fixing device is omitted.

Description

Technical Field

[0001] The present application relates to the technical field of atomization, and more specifically, to a heating component and an aerosol generating device. Background Art

[0002] In a circumferential heating aerosol generating device, in order to quickly reach a relatively high heating temperature, heating elements such as heating wires, heating strips, and heating sheets are usually wound outside the quartz glass tube wall to heat the atomization medium in the quartz glass tube. However, due to the smooth wall surface of the quartz glass tube, it is difficult for the metal wire to fully adhere to the quartz glass tube, resulting in problems such as heat loss and inaccurate temperature control. Summary of the Utility Model

[0003] Embodiments of the present application provide a heating component and an aerosol generating device, and are at least used to improve the adhesion between the heating element and the glass tube.

[0004] The heating component of the embodiment of the present application is used to heat the atomization medium. The heating component includes a receiving tube and an elastic heating element. Among them, the receiving tube is used to accommodate the atomization medium; the elastic heating element is integrally cylindrical and has elasticity at least in the radial direction. The elastic heating element is sleeved on the receiving tube, and the elastic heating element has an elastic recovery tendency to reduce the radial dimension.

[0005] In the heating component of the embodiment of the present application, since the elastic heating element is sleeved on the receiving tube and has an elastic recovery tendency to reduce the radial dimension, the elastic heating element can automatically adhere to the receiving tube, thereby reducing heat loss and facilitating accurate adjustment of the heating temperature. In addition, since the elastic heating element can automatically adhere to the receiving tube, a fixing device for fixing the elastic heating element to the wall surface of the receiving tube is also saved.

[0006] 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.

[0007] In this way, when the elastic heating element is assembled, its radial dimension expands under the action of an external force and can be sleeved on the receiving tube. Since 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, the elastic heating element will rebound and tightly adhere to the outer wall surface of the receiving tube, thereby ensuring that the elastic heating element closely adheres to the receiving tube during the heating process, improving the heat transfer efficiency, and saving an additional fixing device.

[0008] In some embodiments, the elastic heating element includes a plurality of surrounding portions extending along the circumferential direction of the receiving tube and connecting portions. The plurality of surrounding portions are arranged at intervals along the axial direction of the receiving tube, and the connecting portions connect two adjacent surrounding portions along the axial direction of the receiving tube. The surrounding portions have elasticity.

[0009] Thus, since the surrounding part is stretchable, by surrounding the accommodating tube with the surrounding part and arranging them at intervals along the axial direction of the accommodating tube, it is beneficial for the elastic heating element to generate relatively uniform deformation in the circumferential direction with respect to the accommodating tube. The connecting part connects two adjacent surrounding parts along the axial direction of the accommodating tube, so that when the elastic heating element is electrified, each surrounding part can be connected to the same circuit. In addition, the spaced arrangement of the surrounding parts also increases the resistance in the circuit, which is beneficial to increasing the heating power.

[0010] In some embodiments, along the axial direction of the accommodating tube, two adjacent connecting parts are arranged at intervals along the circumferential direction of the accommodating tube; and / or, the projection of the surrounding part on a reference plane perpendicular to the axial direction of the accommodating tube along the axial direction of the accommodating tube is a closed ring; and / or, the axial ends of the accommodating tube are respectively a first end and a second end, and the surrounding part includes a first part extending along the circumferential direction of the accommodating tube towards the first end and a second part extending towards the second end, and the first part and the second part are alternately arranged on the extending path of the surrounding part.

[0011] Thus, by arranging two adjacent connecting parts along the axial direction of the accommodating tube at intervals along the circumferential direction of the accommodating tube, the connecting parts are staggered along the circumferential direction of the accommodating tube, providing relatively sufficient deformation margin for the elastic heating element.

[0012] By arranging the surrounding part to form a ring-shaped projection on a reference plane perpendicular to the axial direction of the accommodating tube along the axial direction of the accommodating tube, it is ensured that the circumferential contact range between the elastic heating element and the accommodating tube is sufficient to support the elastic heating element to generate elastic deformation in all radial directions.

[0013] By alternately arranging the first part and the second part forming an angle in the surrounding part, the length of the surrounding part is increased, so that the radial elastic deformation of the elastic heating element has a larger deformation margin, and at the same time, the heating area can also be increased.

[0014] In some embodiments, the extending path of the surrounding part along the circumferential direction of the accommodating tube is a curve; or, the extending path of the surrounding part along the circumferential direction of the accommodating tube is a broken line.

[0015] Thus, by the surrounding part extending along a curve or a broken line path along the circumferential direction of the accommodating tube, the length of the surrounding part is increased, a larger elastic deformation margin is provided, and the effective heating area is increased.

[0016] In some embodiments, in the state where the accommodating tube is separated from the elastic heating element, the accommodating tube has a first dimension in the radial direction, and the first dimension is less than or equal to the radial dimension of the elastic heating element; in the state where the elastic heating element is sleeved on the accommodating tube, the accommodating tube has a second dimension in the radial direction, and the second dimension is greater than the first dimension and greater than the radial dimension of the elastic heating element in the separated state from the accommodating tube.

[0017] In this way, when the accommodating tube is in a state separated from the elastic heating element, its radial dimension is smaller than that of the elastic heating element, making it easy for the elastic heating element to be sleeved on the accommodating tube. When in a sleeved state with the elastic heating element, the radial dimension of the accommodating tube can increase from a first dimension to a second dimension, causing the elastic heating element to undergo a radially expanding elastic deformation and have an elastic recovery tendency to reduce its radial dimension, thereby ensuring that the elastic heating element is sleeved on the accommodating tube and is fully attached to the accommodating tube.

[0018] In some embodiments, the heating assembly includes a cover body that surrounds the accommodating tube and encloses the elastic heating element.

[0019] In this way, by surrounding the accommodating tube and enclosing the elastic heating element with the cover body, the cover body plays a role in supporting and protecting the accommodating tube and the elastic heating element, and can insulate heat to a certain extent.

[0020] In some embodiments, the cover body is spaced apart from the elastic heating element, and an infrared reflection layer is provided on the inner surface of the cover body; and / or, the cover body includes a cylindrical body and a cover plate. The cylindrical body surrounds the accommodating tube, and the cover plate is combined with the cylindrical body and covers the end of the cylindrical body along the axial direction of the accommodating tube.

[0021] In this way, by spacing the cover body apart from the elastic heating element and providing an infrared reflection layer on the inner surface of the cover body, the heat radiated outward by the elastic heating element is reflected into the accommodating tube, reducing heat transfer outward and improving heat utilization efficiency. By surrounding the accommodating tube with the cylindrical body and combining the cover plate with the cylindrical body and covering the end of the cylindrical body along the axial direction of the accommodating tube, a more comprehensive covering of the accommodating tube and the elastic heating element is achieved.

[0022] In some embodiments, the heating assembly further includes a fixing device for fixedly connecting the cylindrical body and the cover plate.

[0023] In this way, by fixedly connecting the cylindrical body and the cover plate with the fixing device, the cover body is integrally strengthened to ensure structural stability.

[0024] In some embodiments, the heating assembly includes an electricity connection part electrically connected to the elastic heating element, a cover body that surrounds the accommodating tube and encloses the elastic heating element, and a fixing device for fastening the cover body. The electricity connection part is fixedly connected to the elastic heating element and passes through the cover body and the fixing device.

[0025] In this way, by passing the electricity connection part through the cover body and the fixing device and fixedly connecting the electricity connection part to the elastic heating element, both axial ends of the elastic heating element can be respectively fixed to the first end and the second end of the accommodating tube through the electricity connection part.

[0026] The aerosol generating device according to the embodiments of the present application includes the heating assembly of any of the above embodiments.

[0027] The aerosol generating device according to the embodiment of the present application includes the heating component of the above embodiment. Therefore, it has all the beneficial effects of the heating component of the above embodiment.

[0028] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a schematic structural diagram of the heating component according to the embodiment of the present application;

[0031] Figure 2 is a schematic structural diagram of the heating component according to the embodiment of the present application from a top-down perspective;

[0032] Figure 3 is Figure 2 a schematic cross-sectional view of the heating component along the A-A direction;

[0033] Figure 4 is an exploded structural diagram of the heating component according to the embodiment of the present application;

[0034] Figure 5 is a schematic structural diagram of the elastic heating element according to the embodiment of the present application;

[0035] Figure 6 is a schematic structural diagram of the elastic heating element according to another embodiment of the present application;

[0036] Figure 7 is a schematic structural diagram of the elastic heating element according to still another embodiment of the present application.

[0037] Description of the Main Element Symbols:

[0038] 100, heating component; 10, receiving tube; 11, first end; 12, second end; 20, elastic heating element; 21, surrounding portion; 211, first part; 212, second part; 213, third part; 22, connecting portion; 23, power connection portion; 30, cover body; 301, infrared reflection layer; 33, cylinder; 331, mounting hole; 34, cover plate; 40, fixing device; 41, fixing plate; 411, screw hole; 42, locking screw. Detailed Embodiments

[0039] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present application and should not be construed as limiting the present application.

[0040] In the description of the present 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", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0041] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be construed broadly. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a connection capable of mutual communication; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0043] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0044] Please refer to Figures 1-4 , the heating component 100 of the embodiment of the present application is used to heat an atomization medium (not shown in the figure). The heating component 100 of the embodiment of the present application is used to heat the atomization medium. The heating component 100 includes a receiving tube 10 and an elastic heating element 20. Among them, the receiving tube 10 is used to accommodate the atomization medium; the elastic heating element 20 is integrally cylindrical and has elasticity at least in the radial direction. The elastic heating element 20 is sleeved on the receiving tube 10, and the elastic heating element 20 has an elastic recovery tendency to reduce the radial dimension.

[0045] In the heating component 100 of the embodiment of the present application, since the elastic heating element 20 is sleeved on the receiving tube 10 and has an elastic recovery tendency to reduce the radial dimension, the elastic heating element 20 can automatically fit on 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 fit on the receiving tube 10, the fixing device for fixing the elastic heating element 20 to the wall surface of the receiving tube 10 is also saved.

[0046] Specifically, the elastic heating element 20 having an elastic recovery tendency to reduce the radial dimension means that 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 elastic heating element 20 in the sleeved state with the receiving tube 10. Therefore, the elastic heating element 20 is sleeved on the receiving tube 10 while maintaining an expanded elastic deformation state. In the sleeved state of the elastic heating element 20 and the receiving tube 10, the elastic heating element 20 abuts against the outer wall of the receiving tube 10 and applies a radial elastic force to the receiving tube 10, and the receiving tube 10 applies a supporting force to the elastic heating element 20 along the radial direction and opposite to the direction of the elastic force.

[0047] The atomization medium is a substance that has been processed and can generate an aerosol after being heated. The form of the atomization medium can be fully solid or semi-solid, or it can be liquid. For example, the solid atomization medium can be a product of plant flowers, stems or leaves prepared by processes such as rolling, thick slurry, die casting, and extrusion. Another example is that the liquid atomization medium can include a liquid composition based on plant extracts and / or various flavoring agents.

[0048] The accommodating tube 10 can be a hollow tube body. At least one end of the two ends of the accommodating tube 10 in its own axial direction forms a through hole to accommodate the atomizing medium to be inserted into the hollow interval of the accommodating tube 10. The cross-sectional shape of the accommodating tube 10 can be circular, elliptical, triangular, square, rhombic, polygonal, star-shaped, racetrack-shaped or other irregular shapes, and the present application does not limit this. Exemplarily, the cross-sectional shape of the accommodating tube 10 is circular, and the accommodating tube 10 is a hollow circular tube with both ends communicating.

[0049] It should be noted that, without special limitations, the "axial direction" in the present application refers to the axial direction of the accommodating tube 10, the "circumferential direction" refers to the direction perpendicular to the above-mentioned axial direction and surrounding the accommodating tube 10 along the outer wall of the accommodating tube 10, and the "radial direction" refers to the direction perpendicular to the above-mentioned axial direction and circumferential direction. The definitions of the "axial direction", "circumferential direction" and "radial direction" are also applicable in the embodiment where the cross-section of the accommodating tube 10 is non-circular.

[0050] The accommodating tube 10 can have insulation and be made of a transparent heat-resistant material, so that the accommodating tube 10 can transmit the infrared radiation generated by the heating element 20, improving the heating efficiency and heat-resistant reliability. For example, the accommodating tube 10 is made of glass, quartz glass, transparent ceramics, etc.

[0051] Optionally, the temperature range that the accommodating tube 10 can withstand is above 600 °C.

[0052] It can be understood that the elastic heating element 20 is sleeved on the accommodating tube 10 and closely adheres to the outer wall of the accommodating tube 10. The cross-sectional shape of the elastic heating element 20 is the same as the cross-sectional shape of the accommodating tube 10. The cross-sectional shape of the elastic heating element 20 and the accommodating tube 10 in the disassembled state is not limited. To improve the circumferential uniformity of the elastic force exerted by the elastic heating element 20 on the accommodating tube 10, an elastic heating element 20 with the same cross-sectional shape as the accommodating tube 10 in the disassembled state can be used. Exemplarily, the elastic heating element 20 is integrally cylindrical.

[0053] Optionally, the elastic heating element 20 can be made into an integral cylindrical structure by bending, laminating, nesting, weaving, twisting, hollowing out, cutting, etc. from raw materials or semi-finished products with sheet, strip, or thin plate structures. The wall thickness direction of the elastic heating element 20 can be consistent with the radial direction of the accommodating tube 10 to increase the fitting area between the inner surface of the elastic heating element 20 and the accommodating tube 10.

[0054] It should be noted that the radial dimension of the elastic heating element 20 in the present 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 accommodating tube 10 is a circular tube, the diameter of the elastic heating element 20 in the separated state from the accommodating tube 10 is smaller than the diameter of the elastic heating element 20 in the sleeved state with the accommodating tube 10, and the diameter of the elastic heating element 20 in the sleeved state with the accommodating tube 10 is equal to or slightly larger than the outer diameter of the accommodating tube 10.

[0055] The elastic heating element 20 has radial elasticity. When the elastic heating element 20 generates expansion elastic deformation, the radial dimension of the elastic heating element 20 increases. When the elastic heating element 20 recovers from the deformation, the radial dimension of the elastic heating element 20 decreases. During the deformation and recovery deformation processes of the elastic heating element 20, the wall thickness dimension of the elastic heating element 20 may also change, but this is not a limitation of the implementation mode of this application.

[0056] Optionally, the elastic heating element 20 has electrical conductivity. When the elastic heating element 20 is powered on, it converts electrical energy into heat energy to heat the atomization medium. The elastic heating element 20 generates heat and the temperature rises, and transfers the heat to the accommodation tube 10 and the atomization medium in the accommodation tube 10 through heat transfer and heat radiation.

[0057] In some implementation modes, the radial dimension of the elastic heating element 20 in the separated state from the accommodation tube 10 is smaller than the radial dimension of the accommodation tube 10.

[0058] In the heating component 100 of the implementation mode of this application, when the elastic heating element 20 is assembled, its radial dimension expands under the action of an external force and can be sleeved on the accommodation tube 10. Since the radial dimension of the elastic heating element 20 in the separated state from the accommodation tube 10 is smaller than the radial dimension of the accommodation tube 10, the elastic heating element 20 will rebound and closely adhere to the outer wall surface of the accommodation tube 10, thereby ensuring that the elastic heating element 20 closely adheres to the accommodation tube 10 during the heating process, improving the heat transfer efficiency, and saving an additional fixing device 40.

[0059] Specifically, the elastic heating element 20 has radial elasticity, and in the separated state from the accommodation tube 10, the radial dimension of the elastic heating element 20 is smaller than the radial dimension of the accommodation tube 10. In the sleeved state with the accommodation tube 10, the radial dimension of the elastic heating element 20 is equal to or slightly larger than the radial dimension of the accommodation tube 10. Therefore, the elastic heating element 20 is sleeved on the accommodation tube 10 while maintaining the state of expansion elastic deformation, and the elastic heating element 20 closely adheres to the outer wall of the accommodation tube 10. In this embodiment, the radial dimension of the accommodation tube 10 is a fixed value.

[0060] For example, the elastic heating element 20 is in a cylindrical shape, the accommodation tube 10 is a circular tube, and the fact that the radial dimension of the elastic heating element 20 is smaller than the radial dimension of the accommodation tube 10 in the disassembled state from the accommodation tube 10 means that the diameter of the elastic heating element 20 in the separated state from the accommodation tube 10 is smaller than the outer diameter of the accommodation tube 10. In the state of the elastic heating element 20 and the accommodation tube 10, the diameter of the elastic heating element 20 is equal to or slightly larger than the outer diameter of the accommodation tube 10.

[0061] Please refer to Figures 4-7, in some embodiments, the elastic heating element 20 includes a plurality of surrounding portions 21 extending along the circumferential direction of the receiving tube 10 and connecting portions 22. The plurality of surrounding portions 21 are arranged at intervals along the axial direction of the receiving tube 10. The connecting portions 22 connect two adjacent surrounding portions 21 along the axial direction of the receiving tube 10, and the surrounding portions 21 are stretchable.

[0062] Thus, since the surrounding portions 21 are stretchable, by surrounding the receiving tube 10 with the surrounding portions 21 and arranging them at intervals along the axial direction of the receiving tube 10, it is beneficial for the elastic heating element 20 to generate a relatively uniform deformation in the circumferential direction with respect to the receiving tube 10. The connecting portions 22 connect two adjacent surrounding portions 21 along the axial direction of the receiving tube 10, so that when the elastic heating element 20 is electrified, each surrounding portion 21 can be connected to the same circuit. In addition, the spaced arrangement of the surrounding portions 21 also increases the resistance in the circuit, which is beneficial to increasing the heating power.

[0063] Specifically, the fact that the surrounding portion 21 is stretchable means that the surrounding portion 21 has radial elasticity. When the surrounding portion 21 is sleeved on the receiving tube 10, the surrounding portion 21 undergoes elastic deformation, and the radial dimension of the surrounding portion 21 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 the head and tail ends of the extension of the connecting portion 22 are respectively connected to two adjacent surrounding portions 21. The connecting portion 22 has a certain elasticity and can expand outward as the radial dimension of the surrounding portion 21 increases. The "expanding outward" means moving away from the center of the surrounding of the surrounding portion 21.

[0064] The plurality of surrounding portions 21 means that the number of the surrounding portions 21 is two or more. Each two 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 portion 21 and the connecting portion 22 can be integrally formed to form an integral structure, or the surrounding portion 21 and the connecting portion 22 can be separately formed and connected into an integral structure by means such as welding.

[0065] Optionally, the elastic heating element 20 is a single-layer walled cylindrical structure, and the projection of the surrounding portion 21 on the reference plane is circular or an annular shape with a relatively narrow ring band. In this embodiment, when the elastic heating element 20 generates elastic deformation, the diameter of the surrounding portion 21 increases, and the surrounding portion 21 applies an elastic force pointing to the center of the circle to the receiving tube 10.

[0066] Optionally, the surrounding portion 21 is in a strip or strip shape on the wall surface 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 to increase the area of contact between the surrounding portion 21 and the receiving tube 10.

[0067] Please refer to Figure 4 and Figure 5 , in some embodiments, along the axial direction of the receiving tube 10, two adjacent connecting portions 22 are arranged at intervals along the circumferential direction of the receiving tube 10.

[0068] In this way, by arranging two adjacent connecting parts 22 along the axial direction of the accommodating tube 10 at intervals in the circumferential direction of the accommodating tube 10, the connecting parts 22 are staggered in the circumferential direction of the accommodating tube 10, providing a relatively sufficient deformation margin for the elastic heating element 20.

[0069] Specifically, the number of the connecting parts 22 is multiple, and they are distributed between every two adjacent surrounding parts 21 along the axial direction of the accommodating tube 10. For example, two connecting parts 22 can be arranged between every two adjacent surrounding parts 21 along the axial direction of the accommodating tube 10, and these two connecting parts 22 are arranged at intervals in the circumferential direction of the accommodating tube 10. Further, the connecting parts 22 connecting the same two surrounding parts 21 can be opposite to each other in the radial direction of the accommodating tube 10.

[0070] Two adjacent connecting parts 22 along the axial direction of the accommodating tube 10 are arranged at intervals in the circumferential direction of the accommodating tube 10, and the connecting parts 22 between each surrounding part 21 and the adjacent surrounding parts 21 above and below are arranged with circumferential dislocation along the accommodating tube 10. Such an arrangement avoids the continuous arrangement of the connecting parts 22 along the axial direction of the accommodating tube 10 and the concentrated arrangement in rows in the circumferential direction, thereby avoiding the problem of uneven circumferential structure when the elastic heating element 20 generates elastic deformation in the radial direction. Along the axial direction of the accommodating tube 10, the distance between two adjacent connecting parts 22 arranged at intervals in the circumferential direction of the accommodating tube 10 can be equal, further improving the circumferential uniformity of the structure of the elastic heating element 20.

[0071] Optionally, the connecting part 22 extends along the axial direction of the accommodating tube 10 and is in a vertical strip shape.

[0072] Please refer to Figure 4 , in some embodiments, the projection of the surrounding part 21 on a reference plane perpendicular to the axial direction of the accommodating tube 10 along the axial direction of the accommodating tube 10 is a closed ring.

[0073] In this way, by setting the surrounding part 21 to form a ring-shaped projection on a reference plane perpendicular to the axial direction of the accommodating tube 10 along the axial direction of the accommodating tube 10, the circumferential contact range between the elastic heating element 20 and the accommodating tube 10 is ensured to be sufficient to support the elastic heating element 20 to generate elastic deformation in all radial directions.

[0074] Specifically, at least one surrounding part 21 on the elastic heating element 20 is in a closed ring shape, that is, at least one surrounding part 21 completely surrounds the accommodating tube 10 for one week. In such as Figure 4In the illustrated embodiment, each surrounding portion 21 is in a closed loop shape, so that the circumferential fitting between the elastic heating element 20 and the accommodating tube 10 can be maximally achieved. For another example, when the elastic heating element 20 has a plurality of surrounding portions 21, the surrounding portion 21 located at the outermost side in the axial direction can be in an open loop shape, and the surrounding portions 21 located between the two axial ends of the heating element are in a closed loop shape. The surrounding portion 21 in the open loop shape can surround half a circumference, three-quarters of a circumference, two-thirds of a circumference, etc. of the accommodating tube 10.

[0075] The plurality of surrounding portions 21 are arranged at intervals along the axial direction of the accommodating tube 10, and the distance between every two adjacent surrounding portions 21 in the axial direction can be equal.

[0076] Optionally, in some embodiments, the surrounding portion 21 extends along the circumferential direction of the accommodating tube 10 to form a single-loop circular ring, so that the circumferential and radial stresses are evenly dispersed and are not easily cracked or broken. Specifically, the surrounding portion 21 is in close fit with the outer wall of the accommodating tube 10 and is in a straight strip shape on the outer wall surface of the accommodating tube 10. Optionally, the surrounding portion 21 can extend in a direction obliquely upward, obliquely downward, or perpendicular to the axial direction of the accommodating tube 10 in the circumferential direction of the accommodating tube 10. The plurality of circular surrounding portions 21 can be arranged parallel to each other on the outer wall of the accommodating tube 10.

[0077] Please refer to Figures 3-7 , in some embodiments, the axial end portions of the accommodating tube 10 are respectively a first end 11 and a second end 12, and the surrounding portion 21 includes a first portion 211 extending along the circumferential direction of the accommodating tube 10 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 alternately arranged in the extending path of the surrounding portion 21.

[0078] In this way, by alternately arranging the first portion 211 and the second portion 212 that form an angle in the surrounding portion 21, the length of the surrounding portion 21 is increased, so that the radial elastic deformation of the elastic heating element 20 has a larger deformation margin, and at the same time, the heating area can also be increased.

[0079] Specifically, the direction from the first end 11 to the second end 12 along the axial direction of the accommodating tube 10 is defined as the direction from top to bottom. The first portion 211 extends obliquely upward, and the second portion 212 extends obliquely downward. The first portion 211 and the second portion 212 are alternately arranged and connected in sequence, forming a belt-shaped pattern of alternately convex and concave on the outer wall of the accommodating tube 10. The connection between two adjacent first portions 211 and second portions 212 can be transitioned with a smooth curve or a relatively sharp fold angle can be formed.

[0080] Every two adjacent surrounding parts 21 can be parallel to each other. That is, the first parts 211 on each surrounding part 21 are aligned and parallel to each other along the axial direction of the accommodating tube 10, and the second parts 212 on each surrounding part 21 are aligned and parallel to each other along the axial direction of the accommodating tube 10. In this embodiment, the distance between two adjacent surrounding parts 21 is equal everywhere along the circumferential direction of the accommodating tube 10.

[0081] Please refer to Figures 4-7 , in some embodiments, the extending path of the surrounding part 21 along the circumferential direction of the accommodating tube 10 is a curve. In some other embodiments, the extending path of the surrounding part 21 along the circumferential direction of the accommodating tube 10 is a broken line.

[0082] In this way, by extending the surrounding part 21 along a curved or broken-line path in the circumferential direction of the accommodating tube 10, the length of the surrounding part 21 is increased, a larger elastic deformation margin is provided, and the effective heating area is increased.

[0083] Refer to Figure 5 , the extending path of the surrounding part 21 along the circumferential direction of the accommodating tube 10 is a curve, and the connection between the first part 211 and the second part 212 is transitioned by a smooth curve. The first part 211 and the second part 212 are alternately arranged and connected in sequence, and the surrounding part 21 forms a wavy belt-shaped pattern on the outer wall of the accommodating tube 10. The surrounding part 21 forming a wavy belt-shaped pattern is beneficial to dispersing stress during elastic deformation and avoiding problems such as cracking and breaking.

[0084] Refer to Figure 6 , the extending path of the surrounding part 21 along the circumferential direction of the accommodating tube 10 is a broken line, and a relatively sharp fold angle is formed at the connection between the first part 211 and the second part 212. The first part 211 and the second part 212 are alternately arranged and connected in sequence, and the surrounding part 21 forms a broken-line-shaped strip pattern on the outer wall of the accommodating tube 10.

[0085] Refer to Figure 7 , the extending path of the surrounding part 21 along the circumferential direction of the accommodating tube 10 is a broken line. The surrounding part 21 further includes a third part 213 extending tangentially along the cross-section of the accommodating tube 10, and the extending direction of the third part 213 is the left-right direction shown in the figure. In this embodiment, each two groups of the first parts 211 and the second parts 212 that are connected together and respectively convex upward and concave downward jointly enclose a diamond pattern. Each surrounding part 21 has several diamond patterns arranged at intervals, and the adjacent two diamond patterns on the same surrounding part 21 are connected together by the third part 213. The diamond patterns of two adjacent surrounding parts 21 in the axial direction can be staggered along the circumferential direction. The connecting part 22 can be connected to the third parts 213 that are adjacent in the axial direction.

[0086] The present application does not limit the shape and structure of the surrounding portion 21, and the surrounding portion 21 can also extend along a path of zigzag connection. The surrounding portion 21 can form a variety of patterns such as a plurality of semicircles, semi-ellipses, triangles or other irregular shapes on the outer peripheral surface of the receiving tube 10.

[0087] In some embodiments, in a state where the receiving tube 10 is separated from the elastic heating element 20, the receiving tube 10 has a first dimension in the radial direction, and the first dimension is less than or equal to the radial dimension of the elastic heating element 20; in a state where the elastic heating element 20 is sleeved on the receiving tube 10, the receiving tube 10 has a second dimension in the radial direction, and the second dimension is greater than the first dimension and greater than the radial dimension of the receiving tube 10 in a state of being separated from the elastic heating element 20.

[0088] In this way, by having a radial dimension smaller than that of the elastic heating element 20 in a state where the receiving tube 10 is separated from the elastic heating element 20, it is easy for the elastic heating element 20 to be sleeved on the receiving tube 10, and in a state of being sleeved with the elastic heating element 20, the radial dimension of the receiving tube 10 can increase from the first dimension to the second dimension, so that the elastic heating element 20 undergoes elastic deformation of radial expansion and has a tendency of elastic recovery to reduce the radial dimension, thereby ensuring that the elastic heating element 20 is sleeved on the receiving tube 10 and is in full contact with the receiving tube 10.

[0089] In this embodiment, the radial dimensions of both the receiving tube 10 and the elastic heating element 20 can change. The radial dimension of the receiving tube 10 can change locally in contact with the elastic heating element 20, or the overall radial dimension of the receiving tube 10 can change.

[0090] It should be noted that the first dimension is less than or equal to the radial dimension of the elastic heating element 20 in a state of being separated from the receiving tube 10, and the second dimension is greater than the radial dimension of the elastic heating element 20 in a state of being separated from the receiving tube 10, that is, the radial dimension of the elastic heating element 20 in a state without elastic deformation. The second dimension is also greater than the radial dimension of the elastic heating element 20 when it is sleeved on the receiving tube 10 with the first dimension.

[0091] Optionally, the receiving tube 10 is a rigid member or a combination of rigid bodies.

[0092] Optionally, the radial dimension of a part of the receiving tube 10 is the first dimension in a state of being separated from the elastic heating element 20, and is the second dimension in a state of being sleeved with the elastic heating element 20. For example, the receiving tube 10 is provided with a movable convex portion (not shown in the figure). In a state where the receiving tube 10 is separated from the elastic heating element 20, the convex portion is retracted inside the receiving tube 10 or within the tube wall, and the radial dimension of the convex portion is the first dimension; in a state where the receiving tube 10 is sleeved with the elastic heating element 20, the convex portion can be pushed outwards, and the radial dimension of the convex portion increases to the second dimension.

[0093] Optionally, the convex portion circumferentially surrounds the accommodation tube 10. For example, the accommodation tube 10 is a circular tube and the convex portion is in a circular ring shape. Another example is that the convex portion includes a plurality of convex blocks arranged circumferentially along the accommodation tube 10.

[0094] Optionally, the accommodation tube 10 is an elastic member with radial elasticity, or a combined structure with partial radial elasticity.

[0095] Please refer to Figures 1-4 , in some embodiments, the heating assembly 100 includes a cover 30 that surrounds the accommodation tube 10 and encloses the elastic heating element 20.

[0096] In this way, by surrounding the accommodation tube 10 and enclosing the elastic heating element 20 with the cover 30, the accommodation tube 10 and the elastic heating element 20 are supported and protected, and heat insulation can be achieved to a certain extent.

[0097] Specifically, the cover 30 forms a relatively enclosed inner cavity, and the accommodation tube 10 and the elastic heating element 20 are accommodated inside the cover 30. To improve the circumferential uniformity of the temperature field, the cover 30 can be coaxial with the accommodation tube 10 and the cross-sectional shape of the cover 30 is set to be the same as that of the cylinder 33. The axial ends of the cover 30 can cooperate with the two axial end faces of the accommodation tube 10 to fixedly install the cover 30 relative to the accommodation tube 10.

[0098] Please refer to Figure 3 , in some embodiments, the cover 30 is spaced from the elastic heating element 20, and an infrared reflection layer 301 is provided on the inner surface of the cover 30.

[0099] In this way, by spacing the cover 30 from the elastic heating element 20 and providing the infrared reflection layer 301 on the inner surface of the cover 30, the heat radiated outward by the elastic heating element 20 is reflected into the accommodation tube 10, reducing heat transfer outward and improving the heat utilization rate.

[0100] Specifically, the cover 30 covers the outside of the accommodation tube 10 and the elastic heating element 20 and is spaced from the elastic heating element 20. A relatively enclosed cavity is formed between the cover 30 and the accommodation tube 10. Part of the heat generated by the elastic heating element 20 is transferred to the accommodation tube 10, part is radiated outward, and is reflected by the infrared reflection layer 301 on the cover 30 and is reflected into the accommodation tube 10.

[0101] The infrared reflection layer 301 is provided on the inner surface of the cover 30. The inner surface of the cover 30 at least includes the inner wall surface of the cylinder 33 facing the accommodation tube 10 and the opposite side surfaces of the upper and lower end covers 34.

[0102] Please refer to Figure 3 and Figure 4, in some embodiments, the cover 30 includes a cylinder 33 and a cover plate 34. The cylinder 33 surrounds the accommodation tube 10, and the cover plate 34 is combined with the cylinder 33 and covers the end of the cylinder along the axial direction of the accommodation tube 10.

[0103] In this way, by surrounding the accommodation tube 10 with the cylinder 33 and combining the cover plate 34 with the cylinder 33 and covering the end of the cylinder along the axial direction of the accommodation tube 10, a relatively comprehensive covering of the accommodation tube 10 and the elastic heating element 20 is achieved.

[0104] Specifically, the cylinder 33 has a hollow structure. If the accommodation tube 10 is a circular tube, the cylinder 33 can be a cylindrical tube. The cross-section of the cylinder 33 is in an annular shape, and the inner diameter of the cylinder 33 is greater than the diameter of the elastic heating element 20. The shape of the cover plate 34 matches the shape of the end face of the cylinder 33. For example, the cover plate 34 is in an annular shape. The outer peripheral surface of the cover plate 34 is engaged with the axial end face of the cylinder 33, and the inner peripheral surface of the cover plate 34 is engaged with the axial end face of the accommodation tube 10. The cover plate 34 and the cylinder 33 form an integral structure.

[0105] The outer walls of the cover plate 34, the cylinder 33, and the accommodation tube 10 can enclose a closed reflection cavity. Infrared reflection layers 301 are provided on the inner surfaces of the cylinder 33 and the cover plate 34 to reflect the infrared rays emitted by the elastic heating element 20 at all angles.

[0106] The upper and lower end faces of the accommodation tube 10 can cooperate with the cover plate 34. After the upper and lower cover plates 34 are locked and fixed to the cylinder 33, they are fixed inside the entire cover 30 to prevent crosstalk. The elastic heating element 20 is pre-assembled with the accommodation tube 10 through a special process. When the accommodation tube 10 and the elastic heating element 20 are in a disassembled state, the outer diameter of the accommodation tube 10 is greater than the inner diameter of the elastic heating element 20. During the assembly process, the elastic heating element 20 undergoes elastic radial deformation and expands, and then naturally shrinks after assembly, tightly binding to the wall surface of the accommodation tube 10 to form an overall stable heating structure.

[0107] In some extended embodiments, the cover 30 can be an integrally formed structure, or a left-right split structure connected to form an integral whole, or multiple split parts connected to form an integral whole.

[0108] Please refer to Figures 1-4 , in some embodiments, the heating assembly 100 further includes a fixing device 40, and the fixing device 40 is used to fixedly connect the cylinder 33 and the cover plate 34.

[0109] In this way, by fixedly connecting the cylinder 33 and the cover plate 34 through the fixing device 40, the cover 30 is integrally reinforced to ensure structural stability.

[0110] Specifically, the fixing device 40 includes two sets of fixing plates 41 and locking screws 42 respectively arranged at the first end 11 and the second end 12. The two fixing plates respectively cover the opposite sides of the two cover plates 34 at the axial two ends of the accommodating tube 10. The fixing plate 41 can be annular and is provided with a plurality of screw holes 411 spaced circumferentially. The screw holes 411 penetrate through the fixing plate 41 along the axial direction of the accommodating tube 10. Mounting holes 331 penetrating through the upper and lower end faces of the cylinder 33 along the axial direction of the accommodating tube 10 are formed in the wall surface of the cylinder 33. The screw holes 411 on the fixing plate 41, the through holes on the cover plate 34, and the mounting holes 331 on the cylinder 33 are correspondingly arranged. 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 nailed into the cover plate 34 and the cylinder 33 to fixedly connect the fixing plate 41, the cylinder 33, and the cover plate 34 together.

[0111] The above way of using the cooperation of the cover plate 34 and the locking screw 42 is only an embodiment of the implementation manner of this application and should not be regarded as a limitation to the implementation manner of this application. The fixing device 40 can also be fixedly connected to the housing 30 by means of welding, riveting, threaded connection, snap connection, adhesive connection, etc. or other fixing parts.

[0112] Please refer to Figures 2-4 , in some implementation manners, the heating component 100 includes a power connection part 23 electrically connected to the elastic heating element 20, a housing 30 surrounding the accommodating tube 10 and enclosing the elastic heating element 20, and a fixing device 40 for fastening the housing 30. The power connection part 23 is fixedly connected to the elastic heating element 20 and penetrates through the housing 30 and the fixing device 40.

[0113] In this way, by the power connection part 23 penetrating through the housing 30 and the fixing device 40 and the power connection part 23 being fixedly connected to the elastic heating element 20, both axial ends of the elastic heating element 20 can be respectively fixed to the first end 11 and the second end 12 of the accommodating tube 10 through the power connection part 23.

[0114] The external power supply or circuit is connected through the power connection part 23, so as to supply power to the elastic heating element 20 to realize inductive or resistive heating. At the same time, the heating temperature of the elastic heating element 20 can also be controlled by the input power.

[0115] 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 outside the heating component 100 through the housing 30 to connect to the electronic components outside the heating component 100.

[0116] Optionally, the power connection part 23 is arranged at the axial end of the elastic heating element 20 along the accommodating tube 10.

[0117] Please refer to Figures 2-4, in some embodiments, the number of power connection parts 23 is multiple, and the multiple power connection parts 23 are arranged at intervals along the circumferential direction of the accommodating tube 10.

[0118] Thus, by providing multiple power connection parts 23, the elastic heating element 20 is connected to different power supply circuits and control circuits. The multiple power connection parts 23 are arranged at intervals along the circumferential direction of the accommodating tube 10, reducing the risk of short circuit.

[0119] Specifically, the power connection parts 23 extend from inside the cover 30 to outside the heating assembly 100, and the multiple power connection parts 23 can extend from the upper and lower ends of the cover 30 respectively. Among the multiple power connection parts 23, at least one group of power connection parts 23 located at the upper and lower ends of the cover 30 are connected to an external power supply, and the remaining power connection parts 23 can be connected to capacitors, inductors, electric meters or other electronic components to connect the elastic heating element 20 to a control circuit for detecting and adjusting parameters such as the current, power, and temperature of the elastic heating element 20.

[0120] Specifically, the fixing device 40 includes a fixing plate 41 and a locking screw 42. The fixing plate 41 is attached to two end faces in the axial direction of the cylinder body 33 through the locking screw 42, fastened to the cylinder body 33 as a whole, and at the same time presses the cover plate 34 and the power connection part 23, playing a role of connection and fixation to prevent the power connection part 23 from affecting the elastic heating element 20 when assembled with external components. The power connection part 23 can be locked and fastened by the fixing plate 41 between the fixing plate 41 and the end face in the axial direction of the cylinder body 33.

[0121] The aerosol generating device (not shown in the figure) according to the embodiment of the present application includes the heating assembly 100 of any of the above embodiments.

[0122] The aerosol generating device according to the embodiment of the present application includes the heating assembly 100 of the above embodiment. Therefore, it has all the beneficial effects of the heating assembly 100 of the above embodiment.

[0123] Specifically, the aerosol generating device is a structure capable of generating aerosol by acting on an atomization medium through methods such as resistance heating and electromagnetic heating. The atomization medium is heated and atomized to form aerosol, which can be visible or invisible and can include steam (for example, fine particulate matter in a gaseous state, which is usually liquid or solid at room temperature), as well as liquid droplets of gas and condensed steam. The aerosol can contain volatile compounds. The user can inhale the aerosol into the mouth, nasal cavity or lungs through the mouth or nose.

[0124] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0125] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heating component for heating an atomization medium, characterized in that, The heating component includes: a containing tube configured to contain an atomization medium; and an elastic heating element, which is integrally cylindrical and has elasticity at least in the radial direction. The elastic heating element is sleeved on the containing tube, and the elastic heating element has an elastic recovery tendency to reduce its radial dimension.

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

3. The heating component according to claim 2, wherein The elastic heating element includes a plurality of surrounding portions and connecting portions extending along the circumferential direction of the containing tube. The plurality of surrounding portions are arranged at intervals along the axial direction of the containing tube, and the connecting portions connect two adjacent surrounding portions along the axial direction of the containing tube. The surrounding portions are stretchable.

4. The heating component according to claim 3, characterized in that Axially along the containing tube, two adjacent connecting portions are spaced apart circumferentially along the containing tube; and / or, the projection of the surrounding portion on a reference plane perpendicular to the axial direction of the containing tube along the axial direction of the containing tube is a closed ring; and / or, the axial ends of the containing tube are respectively a first end and a second end. The surrounding portion includes a first portion extending along 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 are alternately arranged on the extending path of the surrounding portion.

5. The heating component according to claim 3, characterized in that, The extending path of the surrounding portion along the circumferential direction of the containing tube is a curve; or, the extending path of the surrounding portion along the circumferential direction of the containing tube is a broken line.

6. The heating component according to claim 1, wherein In a state where the containing tube is separated from the elastic heating element, the containing tube has a first dimension in the radial direction, and the first dimension is less than or equal to the radial dimension of the elastic heating element; In a state where the elastic heating element is sleeved on the containing tube, the containing tube has a second dimension in the radial direction, and the second dimension is greater than the first dimension and greater than the radial dimension of the elastic heating element in a separated state from the containing tube.

7. The heating component according to claim 1, wherein The heating component includes a cover body surrounding the containing tube and enclosing the elastic heating element.

8. The heating component according to claim 7, wherein The cover body is spaced apart from the elastic heating element, and an infrared reflection layer is provided on the inner surface of the cover body; and / or, the cover body includes a cylindrical body and a cover plate. The cylindrical body surrounds the containing tube, and the cover plate is combined with the cylindrical body and covers the axial ends of the cylindrical body along the containing tube. The heating component further includes a fixing device configured to fixedly connect the cylindrical body and the cover plate.

9. The heating component according to claim 1, wherein The heating component includes a power connection portion electrically connected to the elastic heating element, a cover body surrounding the containing tube and enclosing the elastic heating element, and a fixing device for fastening the cover body. The power connection portion is fixedly connected to the elastic heating element and passes through the cover body and the fixing device.

10. An aerosol generating device, characterized in that, Including the heating component according to any one of claims 1-9.

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