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, a heating element and a supporting frame, and the containing pipe is used for containing the atomizing medium; the heating element comprises a heating part and a fixing part arranged at the axial end of the heating part, and the heating part is arranged outside the containing pipe in a sleeving mode. The supporting frame is arranged on the outer side of the heating element, and the supporting frame is fixedly connected with the fixing part and fixedly arranged relative to the containing pipe. The heating element is provided with a fixing part at the end part in the axial direction of the heating part, and the fixing part is matched with the support frame to fix the heating element on the outer side of the accommodating pipe, so that the heating element is uniformly and stably stressed in the axial direction of the heating part, and the heating element is subjected to prestress applied by the support frame through the fixing part during assembly and debugging; therefore, the heating element can be effectively buffered when changing in a cold state and a hot state, the problem of high-temperature creep deformation is effectively restrained, and the requirement for repeated work is met.

Description

Technical Field

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

[0002] In related technologies, aerosol generating devices usually use heating elements such as heating wires and heating foils to heat an atomization medium to generate aerosol. However, after long-term high-temperature operation, the heating element is prone to high-temperature creep phenomenon, and problems such as thermal deformation, thermal vibration, and thermal expansion randomly occur during the high-temperature creep phenomenon and are difficult to control, resulting in the heating element not meeting the requirements of repetitive operation. 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 working stability of the heating component under cold and hot state changes.

[0004] The heating component of the embodiment of the present application is used to heat an atomization medium, and includes: a receiving tube for receiving the atomization medium; a heating element including a heating part and a fixing part provided at an end in the axial direction of the heating part, the heating part being sleeved outside the receiving tube; a support frame provided outside the heating element, the support frame being fixedly connected to the fixing part and fixedly arranged relative to the receiving tube.

[0005] In the heating component of the embodiment of the present application, the heating element is provided with a fixing part at an end in the axial direction of the heating part, and the heating element is fixed outside the heating element through the cooperation of the fixing part and the support frame, so that the heating element is uniformly and stably stressed in the axial direction of the heating part, and the heating element is subjected to prestress applied by the support frame through the fixing part during assembly and debugging. Therefore, the heating element can be effectively buffered during cold and hot state changes, effectively curbing the high-temperature creep problem and meeting the requirements of repetitive operation.

[0006] In some embodiments, the support frame is configured to support the fixing part to tension the heating part.

[0007] In this way, by the support frame supporting the fixing part to tension the heating part, the deformation problem of the heating part under cold and hot state changes is curbed, and the heating reliability is improved.

[0008] In some embodiments, the support frame includes a support cover sleeved outside the heating element and a fastener provided at an end in the axial direction of the support cover, the heating element is connected to the fastener, the inner side of the fastener in its own radial direction is tightly connected to the outer wall of the receiving tube, and the outer side of the fastener in its own radial direction is snap-fitted with the support cover.

[0009] In this way, the support cover is sleeved outside the heating element, thus playing a role in supporting and protecting the whole heating component. By arranging fasteners at the axial ends of the support cover, the fasteners are connected to the heating element, and the inner side is fixedly connected to the outer wall of the accommodating tube, and the outer side is snap-connected to the support cover, so as to realize the axial positioning of the heating element, fix the heating element, and provide axial prestress to the heating element.

[0010] In some embodiments, one of the fastener and the support cover forms a snap groove, and the other forms a limiting rib that snaps with the snap groove.

[0011] In this way, by forming a snap groove on one of the fastener and the support cover, and a limiting rib that snaps with the snap groove on the other, the fastener and the support cover are snap-connected through the snap groove and the limiting rib, thereby ensuring the firm and reliable connection between the fastener and the support cover.

[0012] In some embodiments, at least one contact surface where the snap groove and the limiting rib snap together forms an angle with the axis of the support cover.

[0013] In this way, by at least one contact surface where the snap groove and the limiting rib snap together forming an angle with the axis of the support cover, the radial locking force between the support cover and the fastener can be converted into a pulling force along the axis of the support cover, so that the support frame can apply a pulling force along the axis of the heating element to the heating element, ensuring that the heating element is in a taut state and can withstand the deformation difference caused by repeated heating and cooling cycles.

[0014] In some embodiments, the fastener is annular, and the snap groove and the limiting rib surround the fastener in a circumferential direction for one week.

[0015] In this way, by the snap groove and the limiting rib surrounding the fastener in a circumferential direction for one week, the area and strength of the snap connection are increased, and the stress of the annular fastener is made uniform in the circumferential direction, which is beneficial to applying a circumferentially uniform and stable fastening force and pulling force to the heating element.

[0016] In some embodiments, the fastener forms a plurality of fixing grooves arranged at intervals in the circumferential direction of the fastener, and the fixing grooves are snap-connected to the end of the fixing part away from the heating part.

[0017] In this way, by the fastener forming a plurality of fixing grooves arranged at intervals in the circumferential direction of the fastener, and the fixing grooves being snap-connected to the end of the fixing part away from the heating part, interference and heat loss are reduced, and the connection between the fastener and the fixing part is ensured to be stable.

[0018] In some embodiments, the fixing part axially forms a main body section connecting the heating part and the end away from the heating part along the axis of the heating part, the main body section extends linearly along the axis of the heating part, and the width of the end is greater than the width of the main body section.

[0019] Thus, by widening the width of the fixing part at the end, when the fixing part is engaged with the fastener, the end is not easily disengaged when received in the fixing groove, improving the connection reliability.

[0020] In some embodiments, the heating part includes a heating strip which extends circuitously along the circumferential and axial directions of the accommodating tube, and the heating strip is formed with a plurality of hollow spaces.

[0021] Thus, by the heating strip extending circuitously along the circumferential and axial directions of the accommodating tube to form a plurality of hollow spaces, the heating part can reach each position in the circumferential and axial directions of the accommodating tube, thereby ensuring that the heating element fully heats the atomization medium at each position in the accommodating tube.

[0022] In some embodiments, the heating strip includes a plurality of first extension segments and a plurality of second extension segments. The first extension segments extend along the axial direction of the accommodating tube, and the plurality of first extension segments are arranged along the circumferential direction of the accommodating tube. The second extension segments connect two adjacent first extension segments, and one end of the fixing part is connected to the second extension segment.

[0023] Thus, by the first extension segments extending along the axial direction of the accommodating tube, the plurality of first extension segments being arranged along the circumferential direction of the accommodating tube, the second extension segments connecting two adjacent first extension segments, and one end of the fixing part being connected to the second extension segment, it is beneficial to make the internal stress of the heating element uniform and improve the structural stability of the heating element.

[0024] In some embodiments, the second extension segment is recessed and bent away from the fixing part.

[0025] Thus, by the second extension segment being recessed and bent away from the fixing part, the fixing part elongates and is tensioned during cooling, and the fixing part and the second extension segment can rebound when the temperature rises. That is, the connection position between the fixing part and the second extension segment moves closer to the fixing part at high temperatures, thereby compensating for the deformation amount of thermal expansion elongation of the first extension segment and the second extension segment at high temperatures. The above-mentioned recessed bending and rebound of the second extension segment can reciprocate under the change of cold and hot states, so as to keep the overall relaxation degree of the heating element always relatively reasonable and improve the working stability of the heating element.

[0026] In some embodiments, the fixing part is bent along the axial direction of the accommodating tube.

[0027] Thus, by the fixing part being bent along the axial direction of the accommodating tube, the length of the fixing part in the axial direction of the accommodating tube has a deformation margin. Therefore, when the heating element undergoes cold and hot deformation in the axial direction, the fixing part can increase the curvature or rebound to support the heating element to reset as much as possible.

[0028] In some embodiments, the accommodating tube is a light-transmitting heat-resistant tube.

[0029] In this way, since the accommodation tube is a heat-resistant tube that is light-transmissive, the accommodation tube can transmit the infrared radiation generated by the heating element, heating the atomization medium inserted into the accommodation tube, thereby improving the heating efficiency and heat-resistant reliability.

[0030] In some embodiments, the heating assembly further includes a heat-reflecting layer, which is sleeved outside the heating element and mounted on the support frame.

[0031] In this way, by sleeving the heat-reflecting layer outside the heating element, the infrared rays radiated by the heating element are absorbed and reflected, thereby improving the effective utilization rate of the heat generated by the heating element for heating the atomization medium.

[0032] The aerosol generating device according to the embodiment of the present application includes the heating assembly according to any one of the above embodiments. The heating element is mounted in the aerosol generating device through the support frame and is used to heat the atomization medium to generate aerosol.

[0033] In the aerosol generating device according to the embodiment of the present application, the fixing parts at both axial ends of the heating element are fixedly connected to the support frame, and the support frame is tightly connected to the accommodation tube. An axial prestress is applied to the heating element through the support frame, so as to provide a buffer when the heating element changes between cold and hot states, reducing and even avoiding the influence of deformation of the heating element caused by thermal expansion, thermal vibration, etc., improving the heating stability, and further being beneficial to improving the reliability and service life of the aerosol generating device.

[0034] The additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. Description of the Drawings

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0036] Figure 1 is a schematic structural diagram of the heating assembly according to the embodiment of the present application;

[0037] Figure 2 is a schematic structural diagram of the heating assembly according to the embodiment of the present application from a top view perspective;

[0038] Figure 3 is Figure 2 a schematic cross-sectional view of the heating assembly along the A-A direction;

[0039] Figure 4 is an exploded structural diagram of the heating assembly according to the embodiment of the present application;

[0040] Figure 5 is a schematic structural diagram of the heating element according to the embodiment of the present application;

[0041] Figure 6 It is a schematic structural diagram of a heat generating component of an embodiment of the present application with a part of the support frame removed;

[0042] Figure 7 is Figure 6 An enlarged schematic diagram of part B of

[0043] Description of main component symbols:

[0044] Heat generating component 100, receiving tube 10, heating element 20, heating part 21, heating strip 210, first extension section 211, second extension section 212, pin 213, fixing part 22, main body section 221, end 222, support frame 30, support cover 31, flange 312, limiting rib 314, first support part 316, second support part 318, fastener 32, engaging groove 321, first surface 3212, second surface 3214, groove bottom surface 3216, inclined surface 3218, fixing groove 323, wide groove 3231, narrow groove 3233, step surface 3235, heat reflection layer 40. Specific embodiments

[0045] The following details the embodiments of the present application. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "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 drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so they should not be construed as a limitation of 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 said features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0047] In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. 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 that allows mutual communication; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. 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.

[0048] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0049] 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 merely 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 may be aware of the application of other processes and / or the use of other materials.

[0050] Please refer to Figures 1-3 , 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 includes: a receiving tube 10, a heating element 20, and a support frame 30. Among them, the receiving tube 10 is used to accommodate the atomization medium; the heating element 20 includes a heating portion 21 and a fixing portion 22 provided at an end in the axial direction of the heating portion 21. The heating portion 21 is sleeved outside the receiving tube 10; the support frame 30 is provided outside the heating element 20. The support frame 30 is fixedly connected to the fixing portion 22 and is fixedly arranged relative to the receiving tube 10.

[0051] In the heating component 100 according to the embodiment of the present application, a fixing portion 22 is provided at an end of the heating element 20 along the axial direction of the heating portion 21. The fixing portion 22 cooperates with the support frame 30 to fix the heating element 20 outside the accommodating tube 10, so that the heating element 20 is uniformly and stably stressed in the axial direction of the heating portion 21. Moreover, the heating element 20 is subjected to a prestress applied by the support frame 30 through the fixing portion 22 during assembly and debugging. Thus, the heating element 20 can be effectively buffered during the cold and hot state changes, effectively curbing the problem of high-temperature creep and meeting the requirements of repetitive work.

[0052] Specifically, the heating component 100 according to the embodiment of the present application is used to heat an atomization medium to generate an aerosol. 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 all-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 roll pressing, thick slurry, die casting, extrusion, etc. Another example is that the liquid atomization medium can include a liquid composition based on plant extracts and / or various flavoring agents.

[0053] 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 allow the atomization 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.

[0054] 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 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 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.

[0055] The heating element 20 is sleeved outside the accommodating tube 10. To improve the circumferential uniformity of the temperature field, the heating element 20 can be coaxial with the accommodating tube 10. The heating portion 21 has electrical conductivity, and when the heating portion 21 is energized, it converts electrical energy into heat energy to heat the atomization medium. The accommodating tube 10 and the support frame 30 can have insulation properties. The heating portion 21 has pins 213 for connecting electricity, and the pins 213 can pass through the support frame 30.

[0056] The heating element 20 is fixed outside the accommodating tube 10 through the support frame 30. The heating element 20 can be attached to the outer wall of the accommodating tube 10 or can be spaced apart from the outer wall of the accommodating tube 10 by a certain distance. The length of the heating portion 21 in the axial direction is close to the length of the accommodating tube 10 and can be much greater than the length of the fixing portion 22 in the axial direction.

[0057] Optionally, at any position in the circumferential direction of the accommodating tube 10, the distance between the heating element 20 and the outer wall of the accommodating tube 10 along the radial direction of the accommodating tube 10 is equal everywhere.

[0058] Optionally, the heating element 20 is an integrally formed element, that is, the heating portion 21 and the fixing portion 22 are formed as one body. The heating portion 21 and the fixing portion 22 can also be separate components and connected together.

[0059] The fixing portion 22 is provided at both axial ends of the heating portion 21 and extends distally away from the heating portion 21 along the axial direction of the heating portion 21. The extending path of the fixing portion 22 can be straight or curved. The end 222 of the fixing portion 22 extending along the axial direction of the heating portion 21 is fixedly connected to the support frame 30.

[0060] The support frame 30 and the fixing portion 22 can be fixedly connected by at least one of the ways such as snap connection, adhesive connection, screw connection, riveting connection, fixing member connection, etc. The support frame 30 is arranged outside the accommodating tube 10, and the support frame 30 and the accommodating tube 10 are relatively fixedly arranged. It can be that the support frame 30 and the accommodating tube 10 are directly connected by at least one of the ways such as snap connection, adhesive connection, screw connection, riveting connection, etc. For example, the two axial ends of the support frame 30 are closely attached to the outer wall of the accommodating tube 10, the support frame 30 is circumferentially snapped with the accommodating tube 10, and the support frame 30 applies a radial force to the accommodating tube 10, so as to respectively fix the fixing portion 22 at the preset positions at both ends of the accommodating tube 10.

[0061] The support frame 30 and the accommodating tube 10 are relatively fixedly arranged, or the support frame 30 and the accommodating tube 10 are respectively fixedly connected to the components of a third party. For example, the support frame 30 and the accommodating tube 10 are connected together through an intermediate member. Another example is that the support frame 30 and the accommodating tube 10 are respectively fixedly connected to the housing of the aerosol generating device, which can all realize the function of the support frame 30 applying a force to the fixing portion 22 and supporting the fixing portion 22.

[0062] The connection positions and connection structures of the support frame 30 and the fixing portion 22 at both axial ends can have a mirror image relationship or be centrosymmetrically distributed to ensure uniform stress of the heating portion 21 in the axial direction. A part of the support frame 30 between the two axial ends of the support frame 30 is located outside the heating portion 21 and is spaced apart from the heating portion 21 in the radial direction.

[0063] In some embodiments, the support frame 30 is configured to support the fixing portion 22 and tension the heating portion 21.

[0064] In this way, the fixing part 22 is supported and fixed by the support frame 30, so that the heating part 21 is tensioned, thereby curbing the deformation problem of the heating part 21 under the change of cold and hot states and improving the heating reliability.

[0065] Specifically, the support frame 30 is fixedly connected to the fixing part 22, and the fixing part 22 is connected to the heating part 21 and can be connected as a whole. The support frame 30 applies a fastening force to the heating part 21 through the fixing part 22, so that the heating part 21 always remains tensioned and is not easily relaxed under the action of the fastening force when the ambient temperature changes between cold and hot and has a tendency to deform.

[0066] Please refer to Figures 4-6 , in some embodiments, the heating part 21 includes a heating strip 210, and the heating strip 210 extends circuitously along the circumferential and axial directions of the accommodating tube 10, and the heating strip 210 forms a plurality of hollow spaces.

[0067] In this way, by the heating strip 210 extending circuitously along the circumferential and axial directions of the accommodating tube 10 to form a plurality of hollow spaces, the heating part 21 can touch each position in the circumferential and axial directions of the accommodating tube 10, thereby ensuring that the heating element 20 fully heats the atomization medium at each position in the accommodating tube 10.

[0068] Specifically, the heating strip 210 can be bent and formed from a metal wire, a metal sheet or a metal bar. The heating strip 210 can start extending from the end in the axial direction of the heating part 21, and extend circuitously along the circumferential and axial directions of the accommodating tube 10 for multiple times, and bend at the change of the extending direction until reaching the other end in the circumferential direction of the heating part 21. The head and tail ends of the heating strip 210 are respectively connected to two pins 213, and the pins 213 at both ends can axially pass through the support frame 30 and extend in opposite directions.

[0069] Optionally, the head and tail ends of the heating strip 210 can also be located at the same end in the axial direction of the heating part 21. The heating strip 210 can also start and end extending at various positions such as the middle in the axial direction of the heating part 21, above the bottom, and below the top.

[0070] Optionally, the heating strip 210 changes the extending direction at both ends in the axial direction of the heating part 21. The heating strip 210 can also change the extending direction at various positions between both ends in the axial direction of the heating part 21.

[0071] In some other embodiments, the heating part 21 can also be in various forms such as a mesh shape or a fence shape.

[0072] Please refer to Figure 4 and Figure 5, in some embodiments, the heating strip 210 includes a plurality of first extension segments 211 and a plurality of second extension segments 212. The first extension segments 211 extend along the axial direction of the receiving tube 10, and the plurality of first extension segments 211 are arranged circumferentially around the receiving tube 10. The second extension segments 212 connect two adjacent first extension segments 211, and one end of the fixing portion 22 is connected to the second extension segment 212.

[0073] It should be noted that in this application, the heating strip 210 is divided into the first extension segments 211 and the second extension segments 212, which does not limit that the heating strip 210 is composed of two separate components combined. The heating strip 210 can be an integrally formed element, or can be a separate first extension segment 211 and second extension segment 212 fixedly connected or assembled to form a whole. Here, it is only for better explanation of the subsequent solutions and does not constitute a limitation on whether the heating strip 210 is a whole or a split.

[0074] In this way, by the first extension segments 211 extending along the axial direction of the receiving tube 10, the plurality of first extension segments 211 being arranged circumferentially around the receiving tube 10, the second extension segments 212 connecting two adjacent first extension segments 211, and one end of the fixing portion 22 being connected to the second extension segment 212, it is beneficial to make the internal stress of the heating element 20 uniform and improve the structural stability of the heating element 20.

[0075] Specifically, the first extension segments 211 extend axially, the second extension segments 212 extend circumferentially, and the first extension segments 211 and the second extension segments 212 are arranged in sequence on the extension path of the heating strip 210. The extension direction of the heating strip 210 changes at the connection of the first extension segments 211 and the second extension segments 212 and is bent.

[0076] The plurality of first extension segments 211 are arranged at intervals circumferentially around the receiving tube 10, and the distances between adjacent two first extension segments 211 can be equal. Among the plurality of second extension segments 212, two adjacent second extension segments 212 in the circumferential direction can be respectively located at both axial ends of the heating portion 21 and are staggered in the circumferential direction. The projections of the plurality of second extension segments 212 in the axial direction can form a continuous ring, and can be an open ring, and the opening is formed by the projections of the head and tail ends of the heating strip 210.

[0077] The fixing portion 22 and the heating strip 210 can be integrally formed of the same material. The fixing portion 22 is connected to the second extension segment 212 and extends axially away from the second extension segment 212 along the heating portion 21, that is, the upper fixing portion 22 is located above the second extension segment 212, and the lower fixing portion 22 is located below the second extension segment 212. The fixing portion 22 can be connected to any position in the circumferential direction of the second extension segment 212.

[0078] Please refer to Figure 6, in some embodiments, the second extension segment 212 is recessed and bent away from the fixing portion 22.

[0079] In this way, by the second extension segment 212 being recessed and bent away from the fixing portion 22, the fixing portion 22 elongates and is tensioned during cooling, and the fixing portion 22 and the second extension segment 212 can rebound when the temperature rises. That is, the connection between the fixing portion 22 and the second extension segment 212 moves closer to the fixing portion 22 at high temperatures, thereby compensating for the deformation amount of thermal expansion elongation of the first extension segment 211 and the second extension segment 212 at high temperatures. The above-mentioned recessed bending and rebound of the second extension segment 212 can reciprocate under the change of hot and cold states, so as to keep the overall relaxation degree of the heating element 20 always relatively reasonable, and improve the working stability of the heating element 20.

[0080] Specifically, both the fixing portion 22 and the heating strip 210 (including the first extension segment 211 and the second extension segment 212) are made of metal materials and have a certain plasticity, and can realize the change of hot and cold states. The second extension segment 212 can extend along the axial direction of the heating portion 21, and the extension path is curved. The fixing portion 22 can be connected to the middle position of the second extension segment 212 along the circumferential direction of the heating portion 21, and the second extension segment 212 can have the largest curvature at the connection with the fixing portion 22.

[0081] The second extension segments 212 are distributed at the upper and lower ends of the heating portion 21 along the axial direction. The middle part of the second extension segment 212 at the upper end is recessed downward relative to the left and right ends, and the middle part of the second extension segment 212 at the lower end protrudes upward relative to the left and right ends.

[0082] In some embodiments, the fixing portion 22 is curved along the axial direction of the receiving tube 10.

[0083] In this way, by the fixing portion 22 being curved along the axial direction of the receiving tube 10, the length of the fixing portion 22 in the axial direction of the receiving tube 10 has a deformation margin, so that when the heating element 20 undergoes thermal and cold deformation in the axial direction, the fixing portion 22 can increase the curvature or rebound to support the heating element 20 to reset as much as possible.

[0084] Specifically, the fixing portion 22 extends along the axial direction of the receiving tube 10 and bends toward the circumferential direction or the tangential direction of the receiving tube 10. For example, the fixing portion 22 can be bent into an "S" shape.

[0085] Please refer to Figure 3 and Figure 6 , in some embodiments, the support frame 30 includes a support cover 31 sleeved outside the heating element 20 and a fastener 32 provided at the end of the support cover 31 along the axial direction of the support cover 31. The heating element 20 is connected to the fastener 32. The inner side of the fastener 32 along its own radial direction is tightly connected to the outer wall of the receiving tube 10, and the outer side of the fastener 32 along its own radial direction is snap-connected to the support cover 31.

[0086] In this way, the support cover 31 covers the heating element 20, thereby playing a role in supporting and protecting the entire heating assembly 100. By providing a fastener 32 at the axial end of the support cover 31, the fastener 32 is connected to the heating element 20, and is fixedly connected to the outer wall of the receiving tube 10 on the inner side and engaged with the support cover 31 on the outer side, so as to achieve axial positioning of the heating element 20, fix the heating element 20, and provide axial prestress to the heating element 20.

[0087] Specifically, the support cover 31 is cylindrical. The present application does not limit the cross-sectional shape of the support cover 31. The cross-section of the support cover 31 can be in various shapes such as circular, elliptical, quadrilateral, pentagonal, and other polygons, and the cross-sectional shape of the support cover 31 does not have to have a similar relationship with the cross-sectional shape of the receiving tube 10. For the convenience of assembly and space saving, the cross-sectional shape of the support cover 31 can be circular with a diameter larger than the cross-section of the receiving tube 10, and the support cover 31 can also be coaxial with the receiving tube 10 and / or the heating element 20.

[0088] The fastener 32 is located between the outer wall of the receiving tube 10 and the inner wall of the support cover 31, and coincides with the position of the heating element 20 in the radial direction. The fasteners 32 can be respectively provided at both ends of the support cover 31 in the axial direction. The heating part 21 is located between the fasteners 32 at both ends in the axial direction. The fixing part 22 is engaged with the lower fastener 32 from top to bottom, or engaged with the upper fastener 32 from bottom to top. A through hole axially penetrating the upper and lower end faces of the fastener 32 can be formed on the fastener 32 for the pin 213 of the heating part 21 to pass through.

[0089] Refer to Figure 3 , flanges 312 extending towards the receiving tube 10 can be formed at both ends of the support cover 31 in its own axial direction, and the flanges 312 are engaged with the fastener 32.

[0090] Optionally, the support cover 31 is a split structure. For example, refer to Figure 4 , the support cover 31 includes a first support part 316 and a second support part 318 that are split left and right. The cross-sections of the first support part 316 and the second support part 318 are semi-circular. When the first support part 316 and the second support part 318 are butted and closed, they are transversely locked by screws. The support cover 31 can also be an integrally formed structure, or can be formed by assembling two or more components.

[0091] Please refer to Figure 4 and Figure 6 , in some embodiments, one of the fastener 32 and the support cover 31 forms a snap groove 321, and the other forms a limit rib 314 that is engaged with the snap groove 321.

[0092] In this way, one of the fastener 32 and the support cover 31 forms a clamping groove 321, and the other forms a limiting rib 314 that engages with the clamping groove 321, so that the fastener 32 and the support cover 31 are engaged and connected through the clamping groove 321 and the limiting rib 314, thereby ensuring the firm and reliable connection between the fastener 32 and the support cover 31.

[0093] Specifically, the fastener 32 cooperates with the support cover 31 on the outer side in its own radial direction. The limiting rib 314 can protrude along the radial direction of the fastener 32. The bottom surface 3216 of the clamping groove 321 is opposite to the limiting rib 314 along the radial direction of the fastener 32. The limiting rib 314 extends into the clamping groove 321 to limit the fastener 32 and the support cover 31 in the direction intersecting the radial direction of the fastener 32, especially along the axial direction of the support cover 31.

[0094] Optionally, the inner contour shape of the clamping groove 321 can be complementary to the outer contour shape of the limiting rib 314, so that the clamping groove 321 and the limiting rib 314 are mutually engaged.

[0095] Optionally, the support cover 31 and the fastener 32 are engaged and connected, and are locked together by fixing parts such as screws and rivets.

[0096] Exemplarily, the fastener 32 forms a clamping groove 321 on the outer side in its own radial direction. The number of the fasteners 32 is two, and the two fasteners 32 are respectively sleeved at both axial ends of the accommodating tube 10 and the heating element 20. The support cover 31 forms limiting ribs 314 protruding towards the fastener 32 along the radial direction of the fastener 32 at both axial ends. The limiting ribs 314 on the support cover 31 extend into the clamping grooves 321 on the fastener 32 and engage with the clamping grooves 321, connecting the support cover 31 and the fastener 32 into an integral support frame 30. In this embodiment, the accommodating tube 10, the heating element 20 (including the heating part 21) and the support frame 30 (including the support cover 31) are coaxial and sleeved in sequence in the radial direction.

[0097] In another example, the fastener 32 forms a limiting rib 314, and the support cover 31 forms a clamping groove 321. The limiting rib 314 on the fastener 32 extends into the clamping groove 321 on the support cover 31 and is engaged and connected.

[0098] Please refer to Figure 3 、 Figure 6 and Figure 7 , in some embodiments, at least one contact surface where the clamping groove 321 engages with the limiting rib 314 forms an angle with the axial direction of the support cover 31.

[0099] In this way, at least one contact surface where the engaging groove 321 engages with the limiting rib 314 forms an angle with the axial direction of the support cover 31, so that the radial locking force between the support cover 31 and the fastener 32 can be converted into a pulling force along the axial direction of the support cover 31. Thus, the support frame 30 can apply a pulling force along the axial direction of the heating element 20 to the heating element 20, ensuring that the heating element 20 is in a taut state and can withstand the deformation difference caused by repeated heating and cooling cycles.

[0100] It can be understood that the outer side of the fastener 32 along its own radial direction is engaged and connected with the support cover 31, and a pressure and a supporting force perpendicular to the contact surface are generated on the contact surface where the engaging groove 321 engages with the limiting rib 314. Since the contact surface where the engaging groove 321 engages with the limiting rib 314 forms an angle with the axial direction of the support cover 31, the pressure (or supporting force) generated on the contact surface where the engaging groove 321 engages with the limiting rib 314 can be decomposed into a locking force along the radial direction of the fastener 32 and a component force along the axial direction of the support cover 31. This component force can act on the heating element 20 to form a pulling force along the axial direction of the heating element 20, and the magnitude of this pulling force has a positive correlation with the locking force between the fastener 32 and the support cover 31.

[0101] Specifically, taking the example where the fastener 32 is formed with an engaging groove 321 and the support cover 31 is formed with a limiting rib 314, referring to Figure 7 , on the outer side of the fastener 32 in its own radial direction, an engaging groove 321 recessed radially inward is formed. The inner wall of the engaging groove 321 includes a first surface 3212 and a second surface 3214 opposite to each other along the axial direction of the support cover 31, and a groove bottom surface 3216 opposite to the support cover 31 along the radial direction of the fastener 32. At least one of the first surface 3212, the second surface 3214, and the groove bottom surface 3216 is an inclined surface 3218, that is, at least one of the first surface 3212, the second surface 3214, and the groove bottom surface 3216 forms an angle greater than 0° and less than 90° or greater than 90° and less than 180° with both the axial direction of the support cover 31 and the radial direction of the fastener 32.

[0102] The limiting rib 314 may be formed with an end surface parallel to the inclined surface 3218. When the limiting rib 314 engages with the engaging groove 321, this end surface abuts against the inclined surface 3218. The end surface of the limiting rib 314 may also be formed with a plane or a curved surface or an irregular shape at other angles and abut against the inclined surface 3218.

[0103] In some embodiments, the number of fasteners 32 is two. The two fasteners 32 are respectively sleeved at both ends of the receiving tube 10 along the axial direction of the receiving tube 10, and the two fasteners 32 are respectively fastened and connected to the fixing parts 22 at both axial ends of the heating part 21. The two axial ends of the receiving tube 10 and the heating element 20 may be opposite up and down. Then, the fasteners 32 at both ends are respectively located at the upper end and the lower end of the heating part 21, and the first surface 3212 in the engaging groove 321 is located above the second surface 3214.

[0104] Further, the first surface 3212 of the engaging groove 321 at the upper end of the heating part 21 is formed as an inclined surface 3218, and the second surface 3214 of the engaging groove 321 at the upper end of the heating part 21 is formed as an inclined surface 3218. The second surface 3214 of the engaging groove 321 at the upper end and the first surface 3212 of the engaging groove 321 at the lower end are perpendicular to the axial direction of the support cover 31, and the groove bottom surfaces 3216 of the two engaging grooves 321 can be parallel to the axial direction of the support cover 31. The inclination direction of the inclined surface 3218 can be such that one side of the inclined surface 3218 connecting the groove bottom surface 3216 can be closer to the first surface 3212 (or the second surface 3214) relative to the side at the groove opening, so that the groove opening width is larger than the groove bottom surface 3216, which is beneficial for the limiting rib 314 to be inserted into the engaging groove 321 and is also convenient for the processing and forming of the engaging groove 321 and the limiting rib 314.

[0105] Please refer to Figure 4 In some embodiments, the fastener 32 is in a ring shape, and the engaging groove 321 and the limiting rib 314 surround the fastener 32 in a circumferential direction for one week.

[0106] In this way, by surrounding the fastener 32 in a circumferential direction for one week with the engaging groove 321 and the limiting rib 314, the engaging connection area and strength are increased, and the stress of the ring-shaped fastener 32 is made uniform in the circumferential direction, which is beneficial for applying a circumferentially uniform and stable fastening force and pulling force to the heating element 20.

[0107] Specifically, the engaging groove 321 and the limiting rib 314 surround the fastener 32 in a circumferential direction for one week. The engaging groove 321 is an annular groove, and the limiting rib 314 is an annular protrusion. The engaging groove 321 and the limiting rib 314 can continuously surround the fastener 32 in a circumferential direction for one week, or several notches can be formed in the circumferential direction of the fastener 32.

[0108] Please refer to Figure 6 and Figure 7 In some embodiments, the fastener 32 is formed with a plurality of fixing grooves 323 arranged at intervals in the circumferential direction of the fastener 32, and the fixing grooves 323 are engaged with the end 222 of the fixing part 22 away from the heating part 21.

[0109] In this way, by forming a plurality of fixing grooves 323 arranged at intervals in the circumferential direction of the fastener 32 and engaging the fixing grooves 323 with the end 222 of the fixing part 22 away from the heating part 21, interference and heat loss are reduced, and the connection between the fastener 32 and the fixing part 22 is ensured to be stable.

[0110] Specifically, the fixing grooves 323 are arranged in one-to-one correspondence with the fixing parts 22. The number of the fixing grooves 323 is equal to or slightly more than that of the fixing parts 22. The fixing parts 22 at the upper and lower ends are staggered in the circumferential direction, and the fixing grooves 323 of the fasteners 32 at both ends are also staggered in sequence along the circumferential direction. The fixing grooves 323 can be formed on the outer side of the fastener 32 facing the support cover 31, or on one end face of the fastener 32 facing the heating part 21.

[0111] In some embodiments, the fixing grooves 323 are formed on the outer side of the fastener 32. The fixing grooves 323 form narrow grooves 3233 and wide grooves 3231 with different widths along the extending direction of the fixing part 22. The end 222 of the fixing part 22 away from the heating part 21 is received in the wide groove 3231. The width of the main body section 221 of the fixing part 22 connecting the heating part 21 is smaller than that of the end 222. The main body section 221 passes through the narrow groove 3233, and the left and right side surfaces of the main body section 221 can be in extrusion fit with the two side surfaces of the narrow groove 3233. Due to the width step difference, a step surface 3235 is formed at the connection of the wide groove 3231 and the narrow groove 3233. The end face at the connection of the end 222 and the main body section 221 can abut against the step surface 3235 to achieve a limiting effect. The fixing grooves 323 can penetrate the upper and lower end faces of the fastener 32 along the extending direction of the fixing part 22, that is, the axial direction of the heating part 21.

[0112] Optionally, multiple fixing grooves 323 can be evenly distributed in the circumferential direction of the fastener 32, so that the acting force of the fastener 32 on the heating element 20 is relatively uniform in the circumferential direction.

[0113] In some embodiments, the fastener 32 forms a clamping groove 321 on the outer side along its own radial direction, and the fixing groove 323 can communicate with the clamping groove 321.

[0114] In some other embodiments, the fastener 32 forms a limiting rib 314, and the fixing groove 323 can be formed on the limiting rib 314 or can be axially staggered with the limiting rib 314.

[0115] 11. Please refer to Figure 7 , in some embodiments, the fixing part 22 axially forms a main body section 221 connecting the heating part 21 and an end 222 away from the heating part 21 along the axial direction of the heating part 21. The main body section 221 extends linearly along the axial direction of the heating part 21, and the width d1 of the end 222 is greater than the width d2 of the main body section 221.

[0116] In this way, by widening the width of the fixing part 22 at the end 222, when the fixing part 22 is engaged with the fastener 32, the end 222 is not easily disengaged when received in the fixing groove 323, improving the connection reliability.

[0117] Specifically, the length of the main body section 221 along the axial direction of the heating part 21 is greater than the length of the end 222 along the axial direction of the heating part 21, so as to ensure that there is sufficient deformation allowance at the connection between the main body section 221 and the heating part 21. The width d1 of the end 222 is greater than the width d2 of the main body section 221. The width can be the straight-line distance between the two side surfaces of the end 222 and the main body end in the circumferential direction, or the width along the tangential direction of the end 222 and the main body end along the heating part 21. The width of the fixing groove 323 matches the width d1 of the end 222 and the width d2 of the main body section 221.

[0118] In some extended embodiments, the main body section 221 extends along the axial direction of the heating part 21 and bends towards the left and right sides, and the width of the end 222 is greater than the cross-sectional width of the main body section 221.

[0119] In some embodiments, the accommodating tube 10 is a light-transmitting heat-resistant tube.

[0120] In this way, since the accommodating tube 10 is a light-transmitting heat-resistant tube, the accommodating tube 10 can transmit the infrared radiation generated by the heating element 20, heat the atomization medium inserted into the accommodating tube 10, and improve the heating efficiency and heat-resistant reliability.

[0121] Specifically, the accommodating tube 10 can be made of a transparent heat-resistant material. For example, the accommodating tube 10 is made of glass, quartz glass, transparent ceramic, etc. The heat generated by the heating element 20 can be transmitted to the atomization medium through heat radiation and / or heat transfer. When there is a certain distance between the heating element 20 and the accommodating tube 10, the heat generated by the heating element 20 is mainly transmitted to the atomization medium in the form of infrared radiation through the tube wall of the accommodating tube 10, that is, mainly in the heat transfer mode of heat radiation.

[0122] Optionally, the temperature range that the accommodating tube 10 can withstand is above 600 °C.

[0123] Please refer to Figure 3 , in some embodiments, the heating assembly 100 further includes a heat reflection layer 40, and the heat reflection layer 40 covers the heating element 20 and is installed on the support frame 30.

[0124] In this way, by covering the heating element 20 with the heat reflection layer 40, the infrared rays radiated by the heating element 20 are absorbed and reflected, thereby improving the effective utilization rate of the heat generated by the heating element 20 for heating the atomization medium.

[0125] Specifically, the heat reflecting layer 40 absorbs the infrared radiation radiated by the heating element 20, which can reduce heat loss. The heat reflecting layer 40 can surround the heating element 20 and reflect the infrared radiation to the center of the surrounding, that is, the center of the containing tube 10, to increase the infrared radiation intensity transmitted to the atomizing medium. The heat reflecting layer 40 can be cylindrical and engage with the flange 312 of the support cover 31. The heat reflecting layer 40 is arranged on the inner side of the support cover 31, that is, the containing tube 10, the heating part 21, the heat reflecting layer 40 and the support cover 31 are arranged in sequence from the inside to the outside in the radial direction. The heat reflecting layer 40 is only connected to the support cover 31 to avoid contact with the fastener 32, the heating element 20, the containing tube 10 and other components to reduce the heat conduction to the outside.

[0126] Optionally, the heat reflective layer 40 and the support cover 31 are separate structures and connected by snap connection, screw connection, riveting, etc. The heat reflective layer 40 and the support cover 31 can also be an integrated structure, thereby reducing the number of parts and simplifying the structure of the heating component 100.

[0127] In a specific embodiment, the assembly process of the heating component 100 is as follows: first, the accommodating tube 10, the fastener 32, the heating element 20, and the heat reflecting layer 40 are sequentially sleeved together, and the fixing portion 22 is assembled one by one with the fixing groove 323 on the fastener 32, and then the first support portion 316 and the second support portion 318 of the left and right parts are closed and fixed by drawing screws, and the limiting rib 314 on the support cover 31 is inserted into the engaging groove 321 on the side of the fastener 32. Since the engaging groove 321 has an inclined surface 3218, the drawing screw applies a radial locking force to the support cover 31, and the limiting rib 314 and the engaging groove 321 are pressed against the inclined surface 3218, thereby realizing the conversion of the radial locking force into a vertical pulling force on the heating element 20, ensuring that the heating element 20 is in a taut state.

[0128] The aerosol generating device of the embodiment of the present application includes the heating assembly 100 of any of the above embodiments. The heating element 20 is installed in the aerosol generating device through the support frame 30 and is used to heat the atomizing medium to generate aerosol.

[0129] Specifically, the aerosol generating device is a structure that can generate an aerosol by acting on an atomizing medium by means of resistance heating, electromagnetic heating, etc. The atomizing medium is heated and atomized to form an aerosol, which may be visible or invisible and may include steam (for example, fine particulate matter in a gaseous state, which is usually liquid or solid at room temperature) and liquid droplets of gas and condensed steam. The aerosol may contain volatile compounds. The user can inhale the aerosol into the oral cavity, nasal cavity or lungs through the mouth or nose, and the aerosol inhaled into the user's respiratory system can be used for a variety of purposes such as food, medicine, health care, and entertainment.

[0130] In the aerosol generating device according to the embodiment of the present application, the fixing portions 22 at the two axial ends of the heating element 20 are fixedly connected to the support frame 30, and the support frame 30 is fixedly connected to the accommodating tube 10. An axial prestress is applied to the heating element 20 through the support frame 30, so as to provide a buffer when the heating element 20 undergoes cold and hot state changes, reduce and even avoid the influence of deformation of the heating element 20 caused by thermal expansion, thermal vibration, etc., improve the heating stability, and thus be beneficial to improving the reliability and service life of the aerosol generating device.

[0131] In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0132] 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. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A heating component for heating an atomized medium, characterized in that: include: A containing tube, the containing tube is used to contain the atomized medium; A heating element, the heating element comprising a heating portion and a fixing portion arranged at an axial end of the heating portion, the heating portion being sleeved outside the accommodating tube; and A support frame is arranged on the outside of the heating element, the support frame is fixedly connected to the fixing portion and is fixedly arranged relative to the accommodating tube.

2. The heating component according to claim 1, characterized in that: The support frame is configured to support the fixing portion to tension the heat generating portion.

3. The heating component according to claim 2, characterized in that: The support frame includes a support cover that is sleeved outside the heating element and a fastener that is arranged at the end of the support cover along the axial direction of the support cover, the heating element is connected to the fastener, the fastener is fastened to the outer wall of the accommodating tube along its radial inner side, and the fastener is snap-connected to the support cover along its radial outer side.

4. The heating component according to claim 3, characterized in that: One of the fastener and the support cover forms a clamping groove, and the other one is formed with a limiting rib clamped with the clamping groove.

5. The heating component according to claim 4, characterized in that: At least one contact surface where the engagement groove engages with the limiting rib forms an angle with the axial direction of the support cover.

6. The heating component according to claim 5, characterized in that: The fastener is annular, and the engaging groove and the limiting rib surround the fastener in a circumferential direction.

7. The heating component according to claim 4, characterized in that: The fastener is formed with a plurality of fixing grooves arranged at intervals along the circumference of the fastener, and the fixing grooves are engaged with the end of the fixing portion away from the heat generating portion.

8. The heating component according to claim 7, characterized in that: The fixing portion is formed with a terminal connected to a main section of the heating portion and away from the heating portion along the axial direction of the heating portion. The main section extends linearly along the axial direction of the heating portion, and the terminal has a width greater than that of the main section.

9. The heating component according to claim 1, characterized in that: The heating part comprises a heating strip, which extends in a circuitous manner along the circumferential direction and the axial direction of the accommodating tube, and the heating strip is formed with a plurality of hollow spaces.

10. The heating component according to claim 9, characterized in that: The heating strip includes a plurality of first extension segments and a plurality of second extension segments, the first extension segments extend along the axial direction of the accommodating tube, the plurality of first extension segments are arranged along the circumferential direction of the accommodating tube, the second extension segment connects two adjacent first extension segments, and one end of the fixing portion is connected to the second extension segment.

11. The heating component according to claim 10, characterized in that: The second extension section is concavely curved in a direction away from the fixing portion.

12. The heating component according to claim 10, characterized in that: The fixing portion is curved along the axial direction of the accommodating tube.

13. The heating component according to claim 1, characterized in that: The accommodating tube is a light-transmitting heat-resistant tube.

14. The heating component according to claim 1, characterized in that: The heating component further comprises a heat reflecting layer, which is covered outside the heating element and mounted on the supporting frame.

15. An aerosol generating device, characterized in that: It comprises the heating component according to any one of claims 1 to 14, wherein the heating element is installed in the aerosol generating device through a supporting frame and is used to heat the atomizing medium to generate aerosol.

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