Heating assembly and aerosol generating device

Abstract

The invention discloses a heating assembly and an aerosol generating device. The heating assembly comprises a containing pipe, a heating element and a screwing device, and the containing pipe is used for containing an atomizing medium; the heating element is approximately cylindrical and is sleeved outside the accommodating pipe; and the screwing device is arranged outside the heating element and is used for being capable of acting to enable the heating element to form an acting trend of reducing the radial size. According to the heating assembly, the radial size of the heating element is reduced through the action of the screwing device until the heating element is tightly attached to the containing pipe in the circumferential direction, so that the heat loss between the heating element and the containing pipe is reduced, and the energy efficiency utilization rate of the heating assembly is improved.

Description

TECHNICAL FIELD

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

[0002] In a circumferential heating aerosol generating device, in order to quickly achieve high temperature heating, a metal wire is usually wound outside the wall of a quartz glass tube as a heating element to heat the atomization medium in the quartz glass tube. However, due to the smooth surface of the quartz glass tube wall, the metal wire is difficult to fully adhere to the quartz glass tube, resulting in heat loss. SUMMARY

[0003] Embodiments of the present application provide a heating assembly and an aerosol generating device, and at least solve the problem of heat loss.

[0004] The heating assembly of the embodiments of the present application is used for heating an atomization medium, and includes: a containing tube for containing the atomization medium; a heating element which is generally cylindrical in whole and is sleeved outside the containing tube; and a twisting device provided outside the heating element, the twisting device being capable of being actuated to make the heating element have a tendency to reduce the radial dimension.

[0005] In the heating assembly of the embodiments of the present application, the heating element is made to reduce the radial dimension by the actuation of the twisting device, until the heating element is tightly adhered to the containing tube in the circumferential direction, thereby reducing the heat loss between the heating element and the containing tube and improving the energy utilization efficiency of the heating assembly.

[0006] In some embodiments, the heating element extends helically along the axial and circumferential directions of the containing tube. In other embodiments, the heating element surrounds the containing tube in the circumferential direction of the containing tube and has a discontinuity in the circumferential direction of the containing tube.

[0007] In this way, by helically extending the heating element along the axial and circumferential directions of the containing tube, the twisting device can be actuated to tighten the helical heating element, so that the heating element tightly adheres to the outer wall of the containing tube. By surrounding the containing tube in the circumferential direction of the containing tube and forming a discontinuity in the circumferential direction of the containing tube, the twisting device can be actuated and push the discontinuity to reduce the size, so that the heating element tightly adheres to the outer wall of the containing tube.

[0008] In some embodiments, the twisting device is sleeved at the end of the heating element in the axial direction, and the twisting device is used to apply a tangential force to the heating element when rotating, so as to make the heating element have an actuation tendency to reduce the radial dimension.

[0009] Thus, the tangential force is applied to the end of the heating element by the tightening device, the end of the heating element is driven to rotate, the heating element is radially reduced to tightly contact the outer wall of the containing tube, the heat loss between the heating element and the containing tube is reduced, the energy utilization rate of the heating assembly is improved, and the operation is simple and the structural reliability is high.

[0010] In some embodiments, the tightening device comprises a rotating disc, the rotating disc is formed with a rotating hole, the heating element and the containing tube extend into the rotating hole, and the rotating disc abuts against the axial end of the heating element and the outer wall of the containing tube through the rotating hole.

[0011] Thus, the tangential force is applied to the end of the heating element by the tightening device, the end of the heating element is driven to rotate, the heating element is radially reduced to tightly contact the outer wall of the containing tube, the heat loss between the heating element and the containing tube is reduced, the energy utilization rate of the heating assembly is improved, and the operation is simple and the structural reliability is high.

[0012] In some embodiments, the rotating disc and the containing tube have a frictional resistance along the circumference or tangential direction of the containing tube.

[0013] Thus, the rotating disc and the containing tube are damp matched, so that when the rotating disc rotates, the end of the heating element can be moved along the circumference of the outer wall of the containing tube, thereby realizing that the rotating disc pushes the heating element to radially contract and makes the heating element close to the outer wall of the containing tube.

[0014] In some embodiments, the rotating hole is formed at the rotation center of the rotating disc.

[0015] Thus, the rotating hole is formed at the rotation center of the rotating disc, so that the force applied by the rotating disc to the heating element is evenly distributed in the circumference.

[0016] In some embodiments, the rotating disc is formed with an opening communicating the rotating hole and the outer circumference of the rotating disc, and the rotating disc has elasticity along the circumference of the rotating disc to produce elastic deformation to open the opening when subjected to external force, and the opening is used to allow the containing tube to pass through the rotating hole when the opening is opened.

[0017] Thus, the rotating disc is opened when subjected to external force, so that the rotating disc is sleeved outside the containing tube and the heating element, and the assembly is simple.

[0018] In some embodiments, the tightening device further comprises a fastening structure for fixing the rotating disc after the rotating disc rotates and adjusts the heating element to fit the containing tube.

[0019] Thus, the rotating disc can exert a predetermined pre-tightening force on the heating element and the accommodating tube through the fastening structure after the rotating disc is rotated and adjusted to be in close contact with the accommodating tube, so that the heating element, the fastener and the rotating disc and other elements can maintain the initial position and the initial state during use.

[0020] In some embodiments, the fastening structure comprises a mounting hole formed on the side of the rotating hole and a fastener penetrating the mounting hole.

[0021] Thus, the rotating disc is fixedly installed in the heating assembly by penetrating the fastener in the mounting hole, the structure is stable, and a predetermined fastening force is exerted on the rotating disc rotated to a predetermined position.

[0022] In some embodiments, the fastening structure comprises a clamping structure clamped with the heating element.

[0023] Thus, the use of the fastener is saved by clamping the heating element with the clamping structure, and the number of parts is reduced.

[0024] In some embodiments, the tightening device is provided with an indicating structure for indicating the circumferential close contact degree of the heating element and the accommodating tube.

[0025] Thus, the circumferential close contact degree of the heating element and the accommodating tube is indicated by the indicating structure, so that the circumferential close contact degree of the heating element and the accommodating tube is quantitatively adjusted, and the control of the heating performance and effect of the heating assembly is thereby enhanced.

[0026] In some embodiments, the tightening device comprises a rotating disc, and the indicating structure comprises scales arranged circumferentially on the rotating disc.

[0027] Thus, the scales in the indicating structure correspond to the circumferential close contact degree between the heating element and the accommodating tube, and the scales are arranged circumferentially on the disc surface of the rotating disc, so that the rotating disc is conveniently rotated to a predetermined circumferential close contact degree between the heating element and the accommodating tube.

[0028] In some embodiments, the heating assembly further comprises a fixing device fixedly connected with the tightening device to install the tightening device outside the heating element.

[0029] Thus, the tightening device is installed outside the heating element by fixing the fixing device and the tightening device, so that the tightening device is effectively abutted with the heating element and actuated in a predetermined manner, thereby facilitating the deformation or movement of the heating element in a predetermined manner.

[0030] In some embodiments, the fixing device comprises a fixing cover and a supporting cover sleeved outside the heating element, the fixing cover covers the end of the supporting cover in the axial direction and is fixedly connected with the tightening device.

[0031] Thus, the support cover is sleeved outside the heating element, the fixing cover is covered on the axial end of the support cover, and the fixing cover is fixedly connected with the tightening device, so that the heating element and the tightening device are assembled and positioned, and the heating assembly is supported to form a stable structure.

[0032] In some embodiments, the fixing cover and the support cover have infrared reflectivity.

[0033] Thus, the support cover is sleeved outside the heating element, the fixing cover is covered on the axial end of the support cover, and the fixing cover is fixedly connected with the tightening device, so that the heating element and the tightening device are assembled and positioned, and the heating assembly is supported to form a stable structure.

[0034] The aerosol generating device of the embodiments of the present application comprises the heating assembly of any of the above embodiments, and the heating assembly is used for heating a misting medium to generate an aerosol.

[0035] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0037] Figure 1 is a structural schematic diagram of a heating assembly of an embodiment of the present application;

[0038] Figure 2 is a structural schematic diagram of a heating assembly of an embodiment of the present application in a top view;

[0039] Figure 3 is a structural schematic diagram of a heating assembly of Figure 2 in a cross-sectional view along the A-A direction;

[0040] Figure 4 is an enlarged schematic diagram of a heating assembly of Figure 3 in a B part;

[0041] Figure 5 is a partial cross-sectional view of a heating assembly of an embodiment of the present application;

[0042] Figure 6 is an exploded structural schematic diagram of a heating assembly of an embodiment of the present application;

[0043] Figure 7 is a structural schematic diagram of a heating element of another embodiment of the present application.

[0044] Explanation of main element symbols:

[0045] 100, heating assembly; 10, accommodating tube; 20, heating element; 21, fracture; 22, annular portion; 23, connecting portion; 24, engaging portion; 241, first engaging portion; 242, second engaging portion; 30, twisting device; 31, rotating disc; 312, rotating hole; 314, opening; 316, mounting hole; 32, fastening structure; 321, fastener; 33, indicating structure; 332, scale; 40, fixing device; 41, supporting cover; 42, fixing cover; 421, loading hole; 423, rim. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0047] 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" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0048] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] In the present application, unless specifically defined and limited otherwise, "on" or "under" of a first feature with respect to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature with respect to a second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. "Under", "below" and "underneath" of a first feature with respect to a second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0050] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of the specific examples are described in the following. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to the reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0051] Please refer to Figures 1-5 The heating assembly 100 of the embodiment of the present application is used for heating the atomization medium. The heating assembly 100 comprises a containing tube 10, a heating element 20 and a twisting device 30, wherein the containing tube 10 is used for containing the atomization medium; the heating element 20 is sleeved outside the containing tube 10; the twisting device 30 is arranged outside the heating element 20, and the twisting device 30 can be actuated to make the heating element 20 have a tendency of reducing the radial dimension.

[0052] In the heating assembly 100 of the embodiment of the present application, the radial dimension of the heating element 20 is reduced by the actuation of the twisting device 30, until the heating element 20 is tightly attached to the containing tube 10 in the circumferential direction, so as to reduce the heat loss between the heating element 20 and the containing tube 10, and improve the energy efficiency of the heating assembly 100.

[0053] Specifically, the atomization medium is a substance that can generate aerosol after being treated and heated. The atomization medium can be in a full solid state or a semi-solid state, or can be in a liquid state. For example, the solid atomization medium can be a plant flower, stem or leaf product prepared by using a rolling, thick paste, die casting or extrusion process. For another example, the liquid atomization medium can include a liquid composition based on plant extracts and / or various flavoring agents.

[0054] The accommodating tube 10 can be a hollow tube, and at least one end of the accommodating tube 10 is formed with a through hole in the axial direction of the accommodating tube 10 to accommodate the aerosol medium inserted into the hollow space of the accommodating tube 10. The cross-sectional shape of the accommodating tube 10 can be circular, oval, triangular, square, diamond, polygonal, star-shaped, racetrack-shaped, or other irregular shapes, which are not limited in the present application. For example, the cross-sectional shape of the accommodating tube 10 is circular, and the accommodating tube 10 is a hollow circular tube with both ends connected.

[0055] It should be noted that, without special limitation, the "axial direction" of the present application refers to the axial direction of the accommodating tube 10, the "circumferential direction" refers to the direction perpendicular to the axial direction and around the outer wall of the accommodating tube 10, and the "radial direction" refers to the direction perpendicular to the axial direction and the circumferential direction. The definitions of the "axial direction", "circumferential direction" and "radial direction" are also applicable to the embodiments in which the cross-sectional shape of the accommodating tube 10 is not circular.

[0056] The heating element 20 is sleeved outside the accommodating tube 10, and the heating element 20 can be coaxial with the accommodating tube 10 to improve the circumferential uniformity of the temperature field. The heating element 20 has electrical conductivity, and the heating element 20 converts electrical energy into heat energy when powered on to heat the aerosol medium. The heat generated by the heating element 20 can be transmitted to the aerosol medium by heat radiation and / or heat conduction. The heating element 20 can be made of a metal material with certain plasticity.

[0057] The accommodating tube 10 can have insulation and be made of transparent heat-resistant material, so that the accommodating tube 10 can transmit the infrared radiation generated by the heating element 20, thereby improving the heating efficiency and heat-resistant reliability. For example, the accommodating tube 10 is made of glass, quartz glass, transparent ceramic, etc.

[0058] Optionally, the temperature range that the accommodating tube 10 can withstand is above 600°C.

[0059] Optionally, the tightening device 30 is arranged at any position of the heating element 20 in the axial direction, for example, the tightening device 30 is arranged at the end of the heating element 20 in the axial direction, and for another example, the tightening device 30 is arranged at the middle position of the heating element 20 in the axial direction.

[0060] Optionally, the tightening device 30 can rotate or move along a certain path relative to the accommodating tube 10. When the tightening device 30 moves or rotates relative to the accommodating tube 10, the tightening device 30 and the outer wall of the accommodating tube 10 have a certain frictional resistance, and the heating element 20 is driven to move by the frictional resistance. The path of the movement of the tightening device 30 is not limited in the present application.

[0061] It should be noted that the heating element 20 is generally cylindrical in shape, and the radial dimension of the heating element 20 refers to the distance between any two opposite sides of the heating element 20 in the radial direction, rather than the thickness of the heating element 20 in the radial direction. When the radial dimension of the heating element 20 is reduced, the heating element 20 is tightened in the circumferential direction, and the fitting degree of the heating element 20 to the outer wall of the containing tube 10 is increased.

[0062] In some embodiments, the twisting device 30 is sleeved on the axial end of the heating element 20, and the twisting device 30 is used to apply a tangential force to the heating element 20 during rotation to form an actuating trend of reducing the radial dimension of the heating element 20.

[0063] In this way, by applying a tangential force to the end of the heating element 20 through the twisting device 30, the end of the heating element 20 is driven to rotate, so that the heating element 20 is radially reduced to tightly fit the outer wall of the containing tube 10, thereby reducing the heat loss between the heating element 20 and the containing tube 10, improving the energy efficiency of the heating assembly 100, and being simple and convenient to operate, and having high structural reliability.

[0064] Specifically, the rotation direction of the twisting device 30 is parallel to the radial direction of the containing tube 10, and further, the rotation direction of the twisting device 30 is consistent with the tangential direction or the circumferential direction of the containing tube 10.

[0065] Please refer to Figure 6 In some embodiments, the heating element 20 extends helically along the axial and circumferential directions of the containing tube 10.

[0066] Please refer to Figure 7 In other embodiments, the heating element 20 surrounds the containing tube 10 along the circumferential direction of the containing tube 10 and forms a discontinuity 21 in the circumferential direction of the containing tube 10.

[0067] In this way, by helically extending the heating element 20 along the axial and circumferential directions of the containing tube 10, when the tangential force is applied to the axial end of the heating element 20 by the twisting device 30, the helical heating element 20 can be tightened, so that the heating element 20 tightly fits the outer wall of the containing tube 10. By helically extending the heating element 20 along the circumferential direction of the containing tube 10 and forming a discontinuity 21 in the circumferential direction of the containing tube 10, when the tangential force is applied to the axial end of the heating element 20 by the twisting device 30, the discontinuity 21 can be pushed to reduce the size, and the heating element 20 is tightly fitted to the outer wall of the containing tube 10.

[0068] Specifically, the heating element 20 has a certain plasticity, when the end of the heating element 20 in the axial direction is subjected to a force, the heating element 20 can be deformed and the deformation can be recovered. The heating element 20 is sleeved on the accommodating tube 10, and the two ends of the heating element 20 in the axial direction are close to the two ends of the accommodating tube 10 in the axial direction. The direction from one end of the heating element 20 (or the accommodating tube 10) in the axial direction to the other end is defined as the up-down direction. The tightening device 30 rotates and drives the heating element 20 to gradually adhere to the outer wall of the accommodating tube 10, and the heating element 20 can be tightened until the heating element 20 is in interference fit with the accommodating tube 10.

[0069] In some embodiments, as shown in Figure 6 The heating element 20 is in a spiral shape and can be made of a metal wire, a metal strip or a metal wire material. At least one end of the heating element 20 in the axial direction is connected to a pin for supplying power to the heating element 20.

[0070] In this embodiment, the tightening device 30 can have two and be sleeved outside the two ends of the heating element 20 in the axial direction. The two tightening devices 30 rotate in opposite directions and drive the two ends of the heating element 20 in the axial direction to move in opposite directions along the circumference of the heating element 20, so that the length of the heating element 20 between the two ends is shortened and exhibits a contraction in the radial direction, and the heating element 20 is closer to the accommodating tube 10. For example, the tightening device 30 at the upper end rotates in the clockwise direction, and the tightening device 30 at the lower end rotates in the counterclockwise direction. For another example, the tightening device 30 at the upper end rotates in the counterclockwise direction, and the tightening device 30 at the lower end rotates in the clockwise direction.

[0071] In this embodiment, the tightening device 30 can also translate relative to the accommodating tube 10 and push or pull the end of the heating element 20 to move along the outer periphery of the accommodating tube 10, so that the two ends of the heating element 20 are close to each other in the outer periphery of the accommodating tube 10, thereby reducing the radial dimension of the heating element 20 and making the heating element 20 adhere to the outer wall of the accommodating tube 10.

[0072] In other embodiments, as shown in Figure 7 The heating element 20 includes a ring-shaped portion 22, a connecting portion 23 and an engaging portion 24. The ring-shaped portion 22 surrounds the accommodating tube 10 along the circumference of the accommodating tube 10, and the ring-shaped portion 22 is an open ring and the opening of the ring-shaped portion 22 forms the fracture 21. The number of ring-shaped portions 22 is multiple, and the multiple ring-shaped portions 22 are arranged in the axial direction of the accommodating tube 10. The connecting portion 23 is connected between two adjacent ring-shaped portions 22. The fractures 21 of the multiple ring-shaped portions 22 can be at the same position in the circumference of the accommodating tube 10, that is, the fractures 21 of the multiple ring-shaped portions 22 are arranged in the axial direction of the accommodating tube 10 in alignment.

[0073] The engaging portion 24 includes a first engaging portion 241 and a second engaging portion 242, which are respectively connected to the annular portions on both sides of the fracture 21, and the first engaging portion 241 and the second engaging portion 242 are opposite along the circumferential direction of the heating element 20. The first engaging portions 241 on the plurality of annular portions 22 can be arranged linearly along the axial direction of the heating element 20, and the second engaging portions 242 are arranged linearly along the axial direction of the heating element 20 on the other side of the fracture 21. The first engaging portion 241 (or the second engaging portion 242) located at the two ends of the heating element 20 in the axial direction extends outward along the axial direction of the heating element 20 by a distance greater than the second engaging portion 242 (or the first engaging portion 241) opposite to itself, and can exceed the annular portion 22 located at the end of the heating element 20. The portion of the first engaging portion 241 (or the first engaging portion 241) at the end of the heating element 20 in the axial direction that exceeds the annular portion 22 can be engaged with the tightening device 30. The first engaging portion 241 and the second engaging portion 242 that exceed the annular portion 22 at the two ends of the heating element 20 in the axial direction and are engaged with the tightening device 30 are respectively located on both sides of the fracture 21 in the circumferential direction.

[0074] In this embodiment, the tightening device 30 has two and is respectively sleeved outside the two ends of the heating element 20 in the axial direction, and the two tightening devices 30 rotate in opposite directions, driving the first engaging portion 241 and the second engaging portion 242 to move in opposite directions in the circumferential direction, respectively, so that the relative distance between the first engaging portion 241 and the second engaging portion 242 at the fracture 21 is shortened, the heating element 20 is contracted in the radial direction, and the heating element 20 is closer to the accommodating tube 10. For example, the upper end tightening device 30 rotates in the clockwise direction, driving the first engaging portion 241 engaged with the upper end tightening device 30 to move in the clockwise direction and close to the upper end second engaging portion 242, and the lower end tightening device 30 rotates in the counterclockwise direction, driving the second engaging portion 242 engaged with the lower end tightening device 30 to move in the counterclockwise direction and close to the lower end first engaging portion 241, thereby driving the size of the fracture 21 of the plurality of annular portions 22 in the circumferential direction to be reduced, the circumference of the plurality of annular portions 22 to be reduced, and the heating element 20 to be contracted in the radial direction and close to the accommodating tube 10.

[0075] In other embodiments, as Figure 7The shown heating element 20 surrounds the accommodating tube 10 in the circumferential direction of the accommodating tube 10 and is formed with a break 21 in the circumferential direction of the accommodating tube 10. The tightening device 30 abuts at least one of the first engaging portion 241 or the second engaging portion 242. The tightening device 30 moves or rotates relative to the accommodating tube 10, and drives one of the first engaging portion 241 and the second engaging portion 242 to move close to the other one of the first engaging portion and the second engaging portion, or drives the first engaging portion 241 and the second engaging portion 242 to move close to each other, so that the radial dimension of the heating element 20 is reduced. In this embodiment, the tightening device 30 can be arranged at any position in the axial direction of the heating element 20, such as at the two ends, at the middle, above the middle, below the middle, etc. The tightening device 30 moves relative to the accommodating tube 10, and can be translated in the radial direction or in the tangential direction relative to the accommodating tube 10.

[0076] Optionally, the widths of the plurality of annular portions 22 in the axial direction are not equal, and the width of the annular portion 22 at the end of the heating element 20 in the axial direction is greater than the width of the annular portion 22 between the two ends.

[0077] Optionally, the connecting portion 23 extends in the axial direction of the accommodating tube 10.

[0078] Optionally, the first engaging portion 241 and the second engaging portion 242 contact each other at the break 21, and the size of the break 21 in the circumferential direction is close to or equal to 0. When the tightening device 30 applies a tangential force to the engaging portion 24, an interference fit can be formed between the first engaging portion 241 and the second engaging portion 242.

[0079] Please refer to Figure 3 and Figure 6 In some embodiments, the tightening device 30 includes a rotating disc 31, the rotating disc 31 is formed with a rotating hole 312, the heating element 20 and the accommodating tube 10 extend into the rotating hole 312, and the rotating disc 31 abuts the end of the heating element 20 in the axial direction and the outer wall of the accommodating tube 10 through the rotating hole 312.

[0080] In this way, by extending the ends of the heating element 20 and the accommodating tube 10 in the axial direction out of the rotating hole 312, the rotating disc 31 abuts the ends of the heating element 20 in the axial direction and the outer wall of the accommodating tube 10 through the rotating hole 312, so that the rotating disc 31 forms a circumferentially surrounding contact surface on the ends of the heating element 20, and when the rotating disc 31 rotates around the rotating hole 312, a tangential force is applied to the ends of the heating element 20.

[0081] Specifically, the rotating hole 312 is a through hole, the rotating disc 31 and the rotating hole 312 can be in a variety of shapes such as a circle, an ellipse, a triangle, a square, a diamond, a polygon, a star, a racetrack shape or other irregular shapes, and the shape of the rotating hole 312 matches the cross-sectional shape of the accommodating tube 10. For example, the rotating disc 31 is a disc-shaped structure, and two rotating discs 31 are respectively sleeved on the two axial ends of the accommodating tube 10, and the end of the heating element 20 abuts against the rotating disc 31 at the rotating hole 312.

[0082] In some embodiments, the rotating disc 31 and the accommodating tube 10 have a frictional resistance along the circumferential direction or the tangential direction of the accommodating tube 10.

[0083] In this way, the rotating disc 31 and the accommodating tube 10 are dampedly matched, so that when the rotating disc 31 rotates, the end of the heating element 20 can be driven to move along the circumferential direction of the outer wall of the accommodating tube 10, thereby realizing that the rotating disc 31 pushes the heating element 20 to radially contract and makes the heating element 20 close to the outer wall of the accommodating tube 10.

[0084] Specifically, the diameter of the rotating hole 312 of the rotating disc 31 can be slightly smaller than or equal to the outer diameter of the accommodating tube 10. Referring to Figure 3 and Figure 4 , the rotating disc 31 and the heating element 20 can abut against or interference fit with the outer wall surface of the accommodating tube 10. When the rotating disc 31 rotates, the rotating disc 31 and the accommodating tube 10 form a circumferential or tangential frictional resistance, the end of the heating element 20 is located at a position along the circumferential direction of the accommodating tube 10, and extends between the accommodating tube 10 and the rotating disc 31, and the frictional resistance between the rotating disc 31 and the accommodating tube 10 drives the end of the heating element 20 to move relative to the accommodating tube 10.

[0085] Please refer to Figure 7 In some embodiments, the rotating hole 312 is formed at the rotation center of the rotating disc 31.

[0086] In this way, the rotating hole 312 is formed at the rotation center of the rotating disc 31, so that the force applied by the rotating disc 31 to the heating element 20 is more uniformly distributed along the circumferential direction.

[0087] Specifically, the rotation center of the rotating disc 31 can be the geometric center of the rotating disc 31, and the geometric center of the rotating disc 31 is located on the central axis of the accommodating tube 10. For example, the accommodating tube 10 is a circular tube, the rotating disc 31 and the rotating hole 312 are concentric circles, and the centers of the rotating disc 31 and the rotating hole 312 are both located on the central axis of the accommodating tube 10. When the rotating disc 31 rotates with the center as the rotation center, the frictional resistance between the accommodating tube 10 in the rotating hole 312 and the rotating disc 31 along the circumferential direction is more uniform, and further, the force applied by the rotating disc 31 to the end of the heating element 20 at any position along the circumferential direction of the accommodating tube 10 can have consistency.

[0088] Please see Figures 1-3 In some embodiments, the rotating disk 31 is formed with an opening 314 that connects the rotating hole 312 with the outer periphery of the rotating disk 31. The rotating disk 31 is elastic along the circumference of the rotating disk 31 so that it can elastically deform and open the opening 314 when subjected to external force. The opening 314 is used to allow the receiving tube 10 to pass through the rotating hole 312 when it is opened.

[0089] Thus, the opening 314 is opened by the rotating disk 31 when it is subjected to external force, so that the rotating disk 31 is sleeved on the outside of the receiving tube 10 and the heating element 20, making the assembly relatively simple.

[0090] Specifically, when the rotating disk 31 is subjected to a force along its own radial or tangential direction at the opening 314, it can produce elastic deformation, and the rotating disks 31 on both sides of the opening 314 move away from each other, causing the opening 314 to open up, and the diameter of the rotating hole 312 increases until it is large enough to accommodate the passage of the receiving tube 10.

[0091] Please see Figure 1 and Figure 2 In some embodiments, the tightening device 30 further includes a fastening structure 32, which is used to fix the rotating disk 31 after the rotating disk 31 rotates and the heating element 20 is adjusted to fit against the receiving tube 10.

[0092] Thus, by using the fastening structure 32 to fix the rotating disk 31 after it rotates and the heating element 20 is adjusted to fit against the receiving tube 10, the rotating disk 31 can apply a predetermined pre-tightening force to the heating element 20 and the receiving tube 10 through the fastening structure 32, so that the heating element 20, the fastener 321 and the rotating disk 31 can maintain their initial position and initial state during use.

[0093] Specifically, the fastening structure 32 is partially formed on the tightening device 30 and partially formed on the fixing device 40 fixed relative to the receiving tube 10. After the tightening device 30 rotates at a certain angle to tighten the heating element 20, and confirms that the circumferential fit between the heating element 20 and the receiving tube 10 reaches the preset fit degree, the fastening structure 32 fixes the tightening device 30 relative to the receiving tube 10 through detachable connection methods such as screwing, riveting, and snap-fit ​​connection.

[0094] The fastening structure 32 can be set at both ends of the circumferential direction of the receiving tube 10. The fastening structure 32 cooperates with the fixing device 40 and the tightening device 30 to form an axial positioning of the heating element 20.

[0095] Please see Figure 2 , Figure 5 and Figure 6In some embodiments, the fastening structure 32 comprises mounting holes 316 formed on the circumferential side of the rotating hole 312 and fasteners 321 passing through the mounting holes 316.

[0096] In this way, the rotating disc 31 is fixedly mounted in the heat generating assembly 100 by the fasteners 321 passing through the mounting holes 316, the structure is stable, and a predetermined fastening force is applied to the rotating disc 31 rotated to a preset position.

[0097] Specifically, the mounting holes 316 can extend along the circumferential direction of the rotating disc 31, and the extension path is arc-shaped. The mounting holes 316 can be distributed on the radially outer side of the rotating hole 312, and two mounting holes 316 opposite in the radial direction of the rotating hole 312 can be arranged on each rotating disc 31. The mounting holes 316 move relative to the fixed device 40 with the rotation of the rotating disc 31.

[0098] The fasteners 321 can be bolts, screws, rivets, etc., and can be fixed at any position along the circumferential direction of the rotating disc 31 in the mounting holes 316. The fasteners 321 cooperate with the mounting holes 316, and when the fasteners 321 are tightened in the mounting holes 316, a fastening force is applied to the rotating disc 31, and the rotating disc 31 converts the fastening force into a radial or circumferential force and applies it to the heat generating element 20 through the mounting holes 316.

[0099] In some embodiments, the fasteners 321 are tight screws, which pass through the mounting holes 316 on the rotating disc 31 and the screw holes on the fixed cover 42, and the tight screws are tightened to fixedly mount the rotating disc 31 on the fixed cover 42 and apply a predetermined fastening force to the rotating disc 31.

[0100] In some embodiments, the fastening structure 32 comprises a clamping structure (not shown in the figure) clamped with the heat generating element 20.

[0101] In this way, the clamping structure is clamped with the heat generating element 20, which saves the use of the fasteners 321 and reduces the number of parts.

[0102] Specifically, the clamping structure can be a protruding rib, a clamping block, a clamping groove, a groove, etc., and the heat generating element 20 can correspondingly form a clamping block or a protruding rib.

[0103] 10. Please refer to Figure 2 In some embodiments, the tightening device 30 is provided with an indicating structure 33 for indicating the circumferential fitting degree of the heat generating element 20 with the accommodating pipe 10.

[0104] In this way, the indicating structure 33 indicates the circumferential fitting degree of the heat generating element 20 with the accommodating pipe 10, so as to realize quantitative adjustment of the circumferential fitting degree of the heat generating element 20 with the accommodating pipe 10, and thereby strengthen the control of the heating performance and effect of the heat generating assembly 100.

[0105] Specifically, the indicating structure 33 can be a mechanical structure or an electronic display device. By pre-converting the corresponding relationship between the radial distance or the tolerance of the interference fit between the heat generating element 20 and the accommodating tube 10 and the rotation angle of the tightening device 30, the circumferential fitting degree of the heat generating element 20 and the accommodating tube 10 is quantified, and the indicating structure 33 is used as a carrier for indicating the circumferential fitting degree of the heat generating element 20 and the accommodating tube 10.

[0106] Referring to Figure 2 In some embodiments, the tightening device 30 includes a rotating disc 31, and the indicating structure 33 includes scales 332 arranged circumferentially on the rotating disc 31.

[0107] In this way, the scales 332 in the indicating structure 33 correspond to the circumferential fitting degree between the heat generating element 20 and the accommodating tube 10, and by arranging the scales 332 circumferentially on the disc surface of the rotating disc 31, it is convenient to rotate the rotating disc 31 to achieve the predetermined circumferential fitting degree between the heat generating element 20 and the accommodating tube 10.

[0108] Specifically, the scales 332 can be distributed on the outer circumference of the rotating disc 31. A rotating hole 312 is formed at the center of the rotating disc 31, and the scales 332 can also be distributed on the outside of the rotating hole 312. When the rotating disc 31 rotates, the scales 332 rotate with the rotating disc 31. Since the accommodating tube 10 and the fixing device 40 are relatively fixed, and the end of the heat generating element 20 is fixed relative to the accommodating tube 10 with the rotating disc 31, a feature such as a corner, a vertex, etc. on the fixing device 40 or the accommodating tube 10 can be selected as a reference point. The reading of the scales 332 is read according to the different scales 332 corresponding to the reference point, and the circumferential fitting degree of the heat generating element 20 and the accommodating tube 10 is determined.

[0109] In other embodiments, the indicating structure 33 on the rotating disc 31 can be a pointer, and the scales 332 are arranged on the accommodating tube 10 or the fixing device 40 (such as the fixing cover 42). The pointer rotates relative to the accommodating tube 10 and the fixing device 40 with the rotating disc 31, and points to different scale 332 values.

[0110] Referring to Figure 1 and Figure 5 In some embodiments, the heat generating assembly 100 further includes a fixing device 40, which is fixedly connected with the tightening device 30 to mount the tightening device 30 outside the heat generating element 20.

[0111] In this way, by fixedly connecting the fixing device 40 with the tightening device 30, the tightening device 30 is mounted outside the heat generating element 20, thereby ensuring that the tightening device 30 effectively abuts against the heat generating element 20 and acts in a predetermined manner, which is conducive to driving the heat generating element 20 to deform or move in a predetermined manner.

[0112] Specifically, the fixing device 40 can be fixedly connected with the rotated tightening device 30 by at least one of the following manners: connection by fixing member, screwing, riveting, snap connection, adhesive connection, etc. The fixing device 40 can install the tightening device 30 at any position outside the heating element 20, which is not limited in the present application. The fixing device 40 can exert a supporting force on the tightening device 30, so that the tightening device 30 abuts against the heating element 20.

[0113] The fixing device 40 can serve as a mounting base of the fastener 321. For example, the fixing cover 42 can be formed with a screw hole below the mounting hole 316, the fastener 321 is a fastening screw, the fastening screw is screwed in the screw hole through the mounting hole 316, thereby fixing the rotating disc 31 at the tightened position.

[0114] Please refer to Figure 5 and Figure 6 In some embodiments, the fixing device 40 includes a fixing cover 42 and a supporting cover 41 sleeved outside the heating element 20, the fixing cover 42 covers the axial end of the supporting cover 41 and is fixedly connected with the tightening device 30.

[0115] In this way, by sleeving the supporting cover 41 outside the heating element 20, the fixing cover 42 covers the axial end of the supporting cover 41 and is fixedly connected with the tightening device 30, thereby assembling and positioning the heating element 20 and the tightening device 30, and supporting the whole heating assembly 100 to form a stable structure.

[0116] Specifically, the supporting cover 41 can be formed by sequentially connecting plate-like structures around the outer periphery of the heating element 20, and surrounds the heating element 20. The supporting cover 41 can also have other structures. The wall surface of the supporting cover 41 can be spaced apart from the heating element 20 in the radial direction by a certain distance. Taking the plane where the axial end of the supporting cover 41 is located as a reference surface, the projection range of the heating element 20 in the axial direction falls within the projection range of the supporting cover 41 in the axial direction.

[0117] For ease of assembly, the outer contour shape and size of the fixing cover 42 match the cross-sectional shape and size of the supporting cover 41. The edge of the outer contour of the fixing cover 42 can be formed with an edge 423 forming a certain angle with the main body part of the fixing cover 42, and the edge 423 can be buckled with and fitted to the outer wall surface of the supporting cover 41.

[0118] The cross-sectional shape of the support cover 41 can be circular, oval, triangular, quadrangular, pentagonal, hexagonal, other polygonal, rhombic, star-shaped, racetrack-shaped, olive-shaped, or other irregular shape. At least one of the two axial ends of the support cover 41 is open, and the fixing cover 42 covers the open end of the support cover 41. The outer contour shape of the fixing cover 42 can be circular, oval, triangular, quadrangular, polygonal, rhombic, star-shaped, racetrack-shaped, olive-shaped, or other irregular shape, and the application does not limit the outer contour shape of the fixing cover 42 and the cross-sectional shape of the support cover 41. For example, referring to Figure 2 , the cross-sectional shape of the support cover 41 and the outer contour shape of the fixing cover 42 are pentagonal.

[0119] The fixing cover 42 is formed with a loading hole 421, which is opposite to the rotating hole 312 of the rotating disc 31 in the axial direction of the containing tube 10 to accommodate the containing tube 10 and the heating element 20 sleeved on the containing tube 10. The diameter of the loading hole 421 is slightly larger than the diameter of the rotating hole 312 and the outer diameter of the containing tube 10, so as to avoid interference when the rotating disc 31 rotates. The loading hole 421 can be located at the geometric center of the fixing cover 42 and can be concentric with the rotating hole 312.

[0120] The two axial ends of the containing tube 10 are defined as the upper and lower ends of the heating assembly 100, respectively, and the fixing cover 42 is sleeved on the upper and lower ends of the containing tube 10, respectively, and the two axial ends of the support cover 41 are clamped with the edge 423 of the fixing cover 42 at the upper and lower ends, respectively.

[0121] In one example, at the upper axial end of the containing tube 10, the rotating disc 31 is stacked on the upper surface of the fixing cover 42; at the lower axial end of the containing tube 10, the rotating disc 31 is stacked on the lower surface of the fixing cover 42, that is, the rotating disc 31 is arranged on the side surface of the fixing cover 42 away from the support cover 41.

[0122] Optionally, the support cover 41 and the fixing cover 42 are in a split structure and are connected by clamping, screwing, riveting, or the like. The support cover 41 and the fixing cover 42 can also be in an integral structure, thereby reducing the number of parts and simplifying the structure of the heating assembly 100.

[0123] In one specific embodiment, the components of the accommodating tube 10, the heating element 20, the rotating disc 31, the fixed cover 42 and the support cover 41, the fastener 321, etc. are assembled in the following steps: Step (1), the two fixed covers 42 and the support cover 41 are assembled on the accommodating tube 10, the fixed cover 42 is sleeved on the two axial ends of the accommodating tube 10 through the loading hole 421, and the support cover 41 is located between the two fixed covers 42 and surrounds the accommodating tube 10. Step (2), the rotating disc 31 with elasticity is pried open from the opening 314, and the accommodating tube 10 is sleeved into the rotating hole 312 from the opening 314. Step (3), the heating element 20 is loaded from the rotating hole 312 and the loading hole 421, is sleeved on the accommodating tube 10, and the two axial ends of the heating element 20 are flush with or in contact with the rotating disc 31. Step (4), the rotating disc 31 is rotated until the reading of the scale 332 shows that the circumferential fit between the heating element 20 and the accommodating tube 10 reaches the preset range. Step (5), the rotating disc 31 is fixed on the fixed cover 42 by using the fastener 321.

[0124] It can be understood that, due to the damping between the rotating disc 31 and the outer wall surface of the accommodating tube 10, the heating element 20 can be pushed to be radially reduced by twisting the rotating disc 31, so as to realize the surface close of the heating element 20 to the accommodating tube 10. The circumferential fit between the heating element 20 and the accommodating tube 10 can be visualized by the reading of the scale 332 on the rotating disc 31, and when the reading of the scale 332 indicates that the circumferential fit between the heating element 20 and the accommodating tube 10 reaches the preset range, it is indicated that the rotation angle of the rotating disc 31 has reached the required angle.

[0125] In some embodiments, the fixed cover 42 and the support cover 41 have infrared reflectivity.

[0126] In this way, by sleeving the support cover 41 on the heating element 20 and covering the axial ends of the support cover 41 with the fixed cover 42, the infrared reflectivity of the fixed cover 42 and the support cover 41 is used to reflect the infrared radiation generated by the heating element 20 into the accommodating tube 10, so as to reduce heat loss.

[0127] Specifically, the support cover 41 surrounds the heating element 20, the accommodating tube 10, the heating part and the support cover 41 are sequentially arranged from the inside to the outside in the radial direction, the fixed cover 42 covers the two axial ends of the support cover 41 and is sleeved on the ends of the accommodating tube 10, and the support cover 41 and the fixed cover 42 reflect the heat generated by the heating element 20 to the accommodating tube 10 in the form of infrared radiation, so as to reduce the transmission of heat outward through the support cover 41 and the fixed cover 42.

[0128] The aerosol generating device of the embodiments of the present application comprises the heating assembly 100 of any of the above embodiments, and the heating assembly 100 is used to heat the atomization medium to generate an aerosol.

[0129] The aerosol-generating device of the embodiment of the present application includes the heating assembly 100 of the above-described embodiment, and thus has all the advantageous effects of the heating assembly 100 of the above-described embodiment.

[0130] The aerosol-generating device is configured to generate aerosol by electromagnetic heating acting on an atomization medium. The atomization medium is heated and atomized to form aerosol, which can be visible or invisible and can include vapor (e.g., fine particulate matter in a gaseous state, which is usually liquid or solid at room temperature), as well as gas and liquid droplets of condensed vapor. The aerosol can contain volatile compounds. A 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 eating, medicine, health care, entertainment, and other purposes.

[0131] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", "illustrative embodiments", "example", "specific example", or "some examples" 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 illustrative description of the above terms does not necessarily mean the same embodiment or example. Also, the specific features, structures, materials, or characteristics described can 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, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat-generating assembly for heating an atomization medium, characterized in that, The heating assembly comprises: a containing tube for containing an atomization medium; a heating element, which is substantially cylindrical in whole, and is sleeved outside the containing tube; a twisting device, which is arranged outside the heating element and can actuate the heating element to form a radial size-reducing actuation trend.

2. The heat generating component of claim 1, wherein, The heating element extends along the axial and circumferential directions of the containing tube; or The heating element surrounds the containing tube along the circumferential direction of the containing tube and is formed with a break in the circumferential direction of the containing tube.

3. The heat generating component of claim 1, wherein, The twisting device is sleeved at the axial end of the heating element, and is used to apply a tangential force to the heating element when rotating to form a radial size-reducing actuation trend.

4. The heat generating assembly of claim 3, wherein, The twisting device comprises a rotating disc, which is formed with a rotating hole, the heating element and the containing tube extend into the rotating hole, and the rotating disc abuts against the axial end of the heating element and the outer wall of the containing tube through the rotating hole.

5. The heat generating assembly of claim 4, wherein, The rotating disc and the containing tube have a frictional resistance along the circumferential or tangential direction of the containing tube.

6. The heat generating component of claim 4, wherein, The rotating hole is formed at the rotation center of the rotating disc.

7. The heat generating component of claim 4, wherein, The rotating disc is formed with an opening, which communicates the rotating hole and the outer periphery of the rotating disc, and has elasticity along the circumferential direction of the rotating disc to produce elastic deformation to open the opening when subjected to an external force, and the opening is used to allow the containing tube to pass through the rotating hole when opened.

8. The heat generating component of claim 4, wherein, The twisting device further comprises a fastening structure, which is used to fix the rotating disc after the rotating disc is rotated and adjusted to fit the heating element and the containing tube.

9. The heat generating component of claim 8, wherein, The fastening structure comprises a mounting hole formed at the circumferential side of the rotating hole and a fastener penetrating the mounting hole.

10. The heat generating component of claim 8, wherein, The fastening structure comprises an engagement structure engaged with the heating element.

11. The heat generating component of claim 1, wherein, The twisting device is provided with an indication structure, which is used to indicate the heating element.

12. The heat generating component of claim 11, wherein, The twisting device comprises a rotating disc, and the indication structure comprises a scale arranged on the rotating disc along the circumferential direction of the rotating disc.

13. The heat generating component of claim 1, wherein, The heating assembly further comprises a fixing device, which is fixedly connected with the twisting device to mount the twisting device outside the heating element.

14. The heat generating component of claim 13, wherein, The fixing device comprises a fixing cover and a supporting cover sleeved outside the heating element, the fixing cover covers the axial end of the supporting cover and is fixedly connected with the twisting device.

15. The heat generating component of claim 14, wherein, The fixing cover and the supporting cover have infrared reflectivity.

16. An aerosol-generating device comprising: The heating assembly comprises the heating assembly according to any one of claims 1-15, and is used to heat an atomization medium to generate an aerosol.

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