Aerosol-generating device

Abstract

The utility model discloses an aerosol generating device which comprises a heating assembly, the heating assembly comprises a containing pipe, a heating body and a fixing device, a containing space is formed in the containing pipe, and the containing space is used for containing an aerosol generating substrate; the heating body is arranged on the outer side, away from the containing space, of the containing pipe and used for generating heat when powered on. The fixing device comprises a hoop, the hoop is arranged outside the heating body in a sleeving mode and abuts against the containing pipe, the heating body has a first size state and a second size state, a gap is formed between the heating body and the containing pipe in the first size state, the heating body is tightly attached to the containing pipe in the second size state, and the hoop has a first position state and a second position state; the clamp can rotate from the first position state to the second position state so as to drive the heating body to be converted from the first size state to the second size state, so that a gap is prevented from being generated between the heating body and the accommodating pipe to a certain extent, heat transfer of the heating body to the aerosol generating substrate is increased, and the heating efficiency is improved.

Description

Technical Field

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

[0002] In the field of atomization technology, a heating assembly using perimeter heating typically consists of a tube for housing the aerosol-generating substrate and a heating wire wound around the tube. Heat generated by the heating wire is transferred to the tube, heating the aerosol-generating substrate and generating aerosol. To facilitate assembly, the heating wire is typically radially larger than the coiled tube. However, this creates a gap between the heating wire and the outer wall of the tube, reducing heat transfer from the heating wire to the tube, affecting both the heating speed and the heating effect. Utility Model Content

[0003] In view of the above problems, an embodiment of the present application provides an aerosol generating device.

[0004] The aerosol generating device according to the embodiment of the present application includes a heating component, which includes a accommodating tube, a heating element, and a fixing device, wherein:

[0005] The accommodating tube is formed with an accommodating space for accommodating the aerosol generating matrix;

[0006] The heating element is arranged on the outer side of the accommodating tube away from the accommodating space, and is used to generate heat when powered. The heating element has a first size state and a second size state. A gap is formed between the heating element and the accommodating tube in the first size state, and the heating element is closely attached to the accommodating tube in the second size state.

[0007] The fixing device includes a clamp, which is arranged outside the heating element and abuts against the accommodating tube. The clamp has a first position state and a second position state. The clamp can be rotated from the first position state to the second position state to drive the heating element from the first size state to the second size state.

[0008] In the aerosol generating device of the embodiment of the present application, the heating element is arranged outside the accommodating tube, and the clamp is arranged outside the heating element and abuts against the accommodating tube. The clamp can rotate and drive the heating element to change from a first size state to a second size state, so that the heating element is close to the accommodating tube during the heating process, thereby reducing and avoiding the gap between the heating element and the accommodating tube to a certain extent, increasing the heat transfer from the heating element to the aerosol generating matrix, thereby improving the heating efficiency and enhancing the atomization effect.

[0009] In some embodiments, the heating element is cylindrical as a whole, and the clamp is sleeved on the axial end of the heating element.

[0010] In this way, the heating element is cylindrical as a whole and is sleeved outside the accommodating tube, and the clamp is sleeved on the axial end of the heating element, which is convenient for assembly, and the structure is relatively balanced and stable. It is also beneficial for the clamp to rotate and drive the heating element to tighten from the first size state to the second size state at all positions in the axial direction.

[0011] In some embodiments, the heating element is wound around the outside of the accommodating tube and extends spirally along the axial direction of the accommodating tube.

[0012] In this way, the heating element is wound around the outside of the accommodating tube and extends in an axial spiral along the accommodating tube, which is beneficial for the heating element to fully cover the accommodating tube and increase the effective heating area. At the same time, the spiral heating element is more likely to tighten inward and stick to the accommodating tube when the clamp rotates.

[0013] In some embodiments, the fixing device further includes a first connecting member, which is disposed between the clamp and the outer wall of the accommodating tube, and covers at least a portion of the heating element.

[0014] In this way, the first connecting member is arranged between the clamp and the outer wall of the accommodating tube and covers at least a part of the heating element, so that the clamp and the heating element are connected at a fixed position on the outer wall of the accommodating tube, thereby avoiding to a certain extent the reduction in locking force after the clamp expands due to heat and causing the heating element to move, thereby ensuring that the heating element is stably attached to the accommodating tube and maintaining efficient heat transfer.

[0015] In some embodiments, the aerosol generating device includes a shell component, the shell component cover is arranged outside the heating component, a reflection cavity is formed between the shell component and the accommodating tube, and the heating element is at least partially arranged in the reflection cavity.

[0016] In this way, the shell assembly is covered outside the heating assembly and forms a reflection cavity between the shell assembly and the accommodating tube. The heating element is at least partially arranged in the reflection cavity, so that the shell assembly can reflect heat to the accommodating tube and lock the heat in the heating assembly and the reflection cavity as much as possible, thereby improving the heating speed and efficiency.

[0017] In some embodiments, the aerosol generating device includes a second connecting member, an installation groove is formed between the shell assembly and the accommodating tube, the second connecting member is filled in the installation groove, the second connecting member is used to fix the shell assembly and the heating assembly, and to seal the reflection cavity, and the wall surface of the reflection cavity surrounded by the shell assembly is provided with a heat reflection layer.

[0018] In this way, the second connecting member is filled in the installation groove to fix the shell assembly and the heating assembly, thereby preventing the heating assembly, especially the heating element, from moving to a certain extent, and forming a sealed reflection cavity to reduce the pollution of oil smoke to the heating element. At the same time, the heat reflection layer enhances the ability of the shell assembly to reflect infrared rays, reduces heat loss, and further improves the heating effect.

[0019] In some embodiments, the cross-sectional inner contour of the housing assembly is polygonal in shape.

[0020] In this way, by setting the inner contour shape of the cross section of the shell component to be a polygon, the inner wall surfaces of the shell component are flat surfaces and form angles with each other, which is conducive to improving the reflectivity of the shell component to infrared radiation.

[0021] In some embodiments, the shell assembly is a split structure, and the shell assembly includes an end cover and an outer shell. The end cover is connected to the outer shell and is arranged at the axial end of the outer shell. The outer shell surrounds the outside of the accommodating tube. The end cover, outer shell, accommodating tube and clamp together form a reflection cavity.

[0022] In this way, the shell assembly is set as a split structure, which is convenient for production and assembly; the end cover, shell, accommodating tube and clamp together form a reflection cavity to ensure full-angle reflection of infrared rays, which is beneficial to heat concentration and heat preservation.

[0023] In some embodiments, a mounting groove is formed between the end cap and the accommodating tube, and the mounting groove is filled with a second connecting member, which is used to fix the end cap and the accommodating tube and to seal the reflective cavity.

[0024] In this way, the second connecting piece is filled in the installation groove and fixedly connects the end cover and the accommodating tube, thereby preventing the movement of the heating component to a certain extent, ensuring that the heating element is close to the accommodating tube, and forming a sealed reflection cavity, reducing oil fume pollution and heat loss, thereby improving the heating effect.

[0025] In some embodiments, the aerosol generating device further comprises an insulating member, which is disposed in the housing assembly and is used to insulate and protect the end of the heating element connected to electricity.

[0026] In this way, the end of the heating element connected to the power supply is insulated and protected by the insulating member, thereby preventing the heating element from being electrically connected to the housing assembly or other metal parts and causing a short circuit.

[0027] In some embodiments, the housing assembly is made of metal, and the insulating member is sleeved onto the accommodating tube, with the insulating member located on the side of the clamp facing the end of the heating element connected to the power supply. In other embodiments, the insulating member is coated on the end of the heating element connected to the power supply. In other embodiments, the housing assembly is made of an insulating material, and the housing assembly forms the insulating member.

[0028] In this way, by fitting the insulating member onto the housing tube and positioned on the side of the clamp facing the electrical connection end of the heating element, the insulating member prevents electrical conduction between the heating element and the metal housing assembly, ensuring smooth electrical connection and heating of the heating element. Short circuits can also be avoided by coating the insulating member on the electrical connection end of the heating element. If the housing assembly is made of an insulating material, there is virtually no electrical conduction between the housing assembly and the heating element, thus preventing short circuits.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a schematic structural diagram of an aerosol generating device according to an embodiment of the present application;

[0032] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the aerosol generating device along the AA direction;

[0033] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of the aerosol generating device along the BB direction;

[0034] Figure 4 yes Figure 2 An enlarged schematic diagram of the aerosol generating device in part C;

[0035] Figure 5 It is a schematic structural diagram of a heating component according to an embodiment of the present application;

[0036] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the heating component along the DD direction.

[0037] Description of main component symbols:

[0038] 100-aerosol generating device; 10-heating component; 11-accommodating tube; 101-accommodating space; 12-heating element; 121-main body; 123-electrical connection end; 30-fixing device; 31-clamp; 40-shell assembly; 401-reflecting cavity; 402-mounting groove; 403-heat reflecting layer; 44-end cover; 441-cover plate; 443-vertical plate; 445-buckle edge; 45-housing; 50-second connecting member; 60-insulating member. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order 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 numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity 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 will appreciate the application of other processes and / or the use of other materials.

[0044] See also Figure 1 The aerosol generating device 100 is a structure that can generate aerosol by generating heat through electromagnetic action and acting on an aerosol generating matrix (not shown). The aerosol generating matrix is ​​a substance that has been processed and heated to generate an aerosol. The aerosol generating matrix is ​​atomized by heat to form an aerosol. The aerosol may be visible or invisible and may include vapor (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 vapor. 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. The aerosol inhaled into the user's respiratory system can be used for various purposes such as food, medicine, health care, and entertainment.

[0045] The aerosol-forming substrate may be in a solid or semi-solid form, or in a liquid form. For example, a solid aerosol-forming substrate may be a plant flower, stem, or leaf product prepared by processes such as roller pressing, slurrying, die casting, or extrusion. For another example, a liquid aerosol-forming substrate may include a liquid composition based on plant extracts and / or various flavoring agents.

[0046] See also Figure 2 、 Figure 5 and Figure 6The aerosol generating device 100 of the embodiment of the present application includes a heating component 10, and the heating component 10 includes a accommodating tube 11, a heating element 12 and a fixing device 30, wherein: the accommodating tube 11 is formed with a accommodating space 101, and the accommodating space 101 is used to accommodate the aerosol generating matrix; the heating element 12 is arranged on the outside of the accommodating tube 11 away from the accommodating space 101, and the heating element 12 is used to generate heat when powered on, and the heating element 12 has a first size state and a second size state, and a gap is formed between the heating element 12 and the accommodating tube 11 in the first size state, and the heating element 12 is tightly attached to the accommodating tube 11 in the second size state; the fixing device 30 includes a clamp 31, which is sleeved on the outside of the heating element 12 and abuts against the accommodating tube 11, and the clamp 31 has a first position state and a second position state, and the clamp 31 can be rotated from the first position state to the second position state to drive the heating element 12 to change from the first size state to the second size state.

[0047] In the aerosol generating device 100 of the embodiment of the present application, the heating element 12 is arranged outside the accommodating tube 11, and the clamp 31 is sleeved on the outside of the heating element 12 and abuts against the accommodating tube 11. The clamp 31 can rotate and drive the heating element 12 to change from a first size state to a second size state, so that the heating element 12 is close to the accommodating tube 11 during the heating process, thereby reducing and avoiding the gap between the heating element 12 and the accommodating tube 11 to a certain extent, increasing the heat transfer from the heating element 12 to the aerosol generating matrix, thereby improving the heating efficiency and enhancing the atomization effect.

[0048] Specifically, when powered, the heating element 12 converts electrical energy into thermal energy. The heat generated by the heating element 12 is sequentially transferred to the aerosol-generating substrate through the contact surfaces of the heating element 12, the accommodating tube 11, and the aerosol-generating substrate. Alternatively, the heat is transmitted to the aerosol-generating substrate via infrared radiation through the accommodating tube 11. The aerosol-generating substrate absorbs the heat, raising its temperature to a certain level, and then atomizes to generate an aerosol.

[0049] Optionally, the heating element 12 includes a main body 121 and an electrical connection end 123 connected to the main body 121. The main body 121 fits the accommodating tube 11 in the second size state and heats the aerosol-generating matrix. The electrical connection end 123 can extend in a direction away from the accommodating tube 11 and partially detach from the accommodating tube 11. The electrical connection end 123 can be connected to both ends of the main body 121 along the axial direction of the accommodating tube 11. The two electrical connection ends 123 can be respectively connected to the two output ends of a power supply, or respectively connected to the high and low potentials of an external circuit. The main body 121 and the electrical connection end 123 can be separate structures, or they can be local segments of the integrally formed heating element 12 that are distinguished according to their functions.

[0050] In the first dimensional state, the heating element 12 is not completely in contact with the outer wall of the accommodating tube 11, and a small gap is formed between the heating element 12 and the outer wall of the accommodating tube 11. In the second dimensional state, the heating element 12 is tightly in contact with the outer wall of the accommodating tube 11. It can be understood that the circumferential dimension of the heating element 12 in the first dimensional state is slightly larger than the circumferential dimension of the second dimensional state, or in other words, the heating element 12 in the first dimensional state is looser than in the second dimensional state, and the heating element 12 in the second dimensional state is tighter than in the first dimensional state.

[0051] In the first position, the clamp 31 holds the heating element 12, so that the portion of the heating element 12 in contact with the clamp 31 abuts against or is close to the outer wall of the accommodating tube 11. At this time, the heating element 12 is in the first size state. In the second position, the clamp 31 tightens the heating element 12, so that the entire heating element 12 is in close contact with the outer wall of the accommodating tube 11. At this time, the heating element 12 is in the second size state.

[0052] The clamp 31 rotates from the first position to the second position, which can be a horizontal rotation within the plane where the clamp 31 is located, that is, the height position of the clamp 31 in the first position (the position along the axial direction of the accommodating tube 11) is the same as the height position in the second position, while the angular position of the clamp 31 in the first position is different from the angular position in the second position.

[0053] Optionally, the accommodating tube 11 is a hollow tube, the hollow section inside the accommodating tube 11 forming the accommodating space 101, and the wall of the accommodating tube 11 serves as an interface separating the accommodating space 101 from the outside of the accommodating tube 11. The accommodating tube 11 has an opening at at least one end, and the aerosol-generating substrate can be fully solid and cylindrical, inserted into the accommodating space 101 through the opening.

[0054] Taking the axial direction of the accommodating tube 11 as the longitudinal direction, the cross-sectional shape of the accommodating tube 11 can be circular, elliptical, triangular, quadrilateral, polygonal, diamond, star-shaped, runway-shaped, olive-shaped or other irregular shapes, etc., and this application does not impose any restrictions on this.

[0055] Exemplarily, the accommodating tube 11 is a hollow circular tube with both ends open in the axial direction. For example, if the cross-section of the accommodating tube 11 is circular, the wall thickness of the accommodating tube 11 can range from 0.1 mm to 0.5 mm. For example, the wall thickness of the accommodating tube 11 can be 0.1 mm, 0.12 mm, 0.25 mm, 0.3 mm, 0.36 mm, 0.4 mm, 0.44 mm, or 0.5 mm.

[0056] Optionally, the accommodating tube 11 is made of a heat-resistant material with a certain strength, for example, quartz, glass, etc., so that the accommodating tube 11 can provide a stable mounting support for the heating element 12 and has good high-temperature reliability. Taking the accommodating tube 11 made of quartz as an example, the wall thickness of the accommodating tube 11 can range from 0.3 mm to 0.4 mm.

[0057] The clamp 31 is generally annular and can be an open ring or a closed ring. The clamp 31 can be an annular ring, an elliptical ring or other annular shapes that match the cross-sectional shape of the accommodating tube 11. For example, referring to Figure 5 and Figure 6 The accommodating tube 11 is a round tube, and the clamp 31 is an open ring. The difference between the outer diameter and the inner diameter of the clamp 31 is small, that is, the thickness of the clamp 31 is thin, which is beneficial to reducing the overall weight and volume of the heating component 10.

[0058] Optionally, the clamp 31 has a certain elasticity. The clamp 31 can be made of metal material. The metal ring-shaped clamp 31 has a certain circumferential elasticity, a greater structural strength, and a smaller size.

[0059] Optionally, the accommodating tube 11, the heating element 12, and the clamp 31 are pre-assembled into a heating assembly 10. The clamp 31 is clamped at a preset position on the accommodating tube 11, so that the heating element 12 is assembled to the accommodating tube 11 in a relatively consistent position and shape, which is beneficial to the consistency of the product. The clamp 31 can be clamped at any position of the heating element 12 in the axial direction of the accommodating tube 11, such as the end or middle section of the heating element 12. The number of clamps 31 is not limited, and it is preferred that the clamp 31 can be sufficiently clamped to the outside of the accommodating tube 11.

[0060] See also Figure 5 In some embodiments, the heating element 12 is cylindrical in shape as a whole, and the clamp 31 is sleeved on the axial end of the heating element 12.

[0061] In this way, the heating element 12 is cylindrical as a whole and is sleeved on the outside of the accommodating tube 11, and the clamp 31 is sleeved on the axial end of the heating element 12, which is convenient for assembly, and the structure is relatively balanced and stable. It is also beneficial for the clamp 31 to rotate and drive the heating element 12 to tighten from the first size state to the second size state at all positions in the axial direction.

[0062] Specifically, the heating element 12 is cylindrical as a whole. In order to improve the fit between the heating element 12 and the accommodating tube 11, the cross-sectional shape of the heating element 12 matches the cross-sectional shape of the accommodating tube 11. The heating element 12 is sleeved outside the accommodating tube 11 and is generally cylindrical as a whole. The heating element 12 can be a variety of structures such as wire, strip, mesh, sheet, plate, rod or film layer, and this application does not impose any restrictions on this. For example, the heating element 12 is a heating net and surrounds the accommodating tube 11 once, winding to form a cylindrical structure; for another example, the heating element 12 can be a cylindrical structure formed by multiple heating rods arranged along the circumference of the accommodating tube 11.

[0063] In order to improve the circumferential uniformity of heating of the heating element 12, the heating element 12 can be coaxial with the containing tube 11. The clamp 31 is sleeved on the axial end of the heating element 12, and is also sleeved outside the axial end of the containing tube 11. The number of the clamps 31 can be two, and the two clamps 31 are respectively sleeved on the two axial ends of the heating element 12. In the process of changing from the first position state to the second position state, the two clamps 31 can rotate in opposite directions; or, one of the two clamps 31 rotates and the other remains fixed, so that the two axial ends of the heating element 12 are subjected to torsional forces in different directions, and are more efficiently tightened from the first size state to the second size state.

[0064] See also Figure 5 In some embodiments, the heating element 12 is wound around the outside of the accommodating tube 11 and extends spirally along the axial direction of the accommodating tube 11.

[0065] In this way, the heating element 12 is wound around the outside of the accommodating tube 11 and extends in an axial spiral along the accommodating tube 11, which is beneficial for the heating element 12 to fully cover the accommodating tube 11 and increase the effective heating area. At the same time, the spiral heating element 12 is more likely to tighten inward and stick to the accommodating tube 11 when the clamp 31 rotates.

[0066] Specifically, in this embodiment, the heating element 12 can be a wire. The heating element 12 can be a round wire, a flat wire or a wire with other cross-sectional shapes, which is wound on the accommodating tube 11 and extends axially along the accommodating tube 11 to form a spiral extension path.

[0067] Optionally, the heating element 12 includes a main body 121 and a power connection end 123. The main body 121 spirally extends from one axial end of the accommodating tube 11 to the other end, forming a solenoid. There are two power connection ends 123, and the two power connection ends 123 are connected to the starting and ending ends of the extension of the main body 121 at the two axial ends of the accommodating tube 11. The power connection end 123 continues to extend from the end of the main body 121 along the axial direction of the accommodating tube 11 for a distance, then bends and continues to extend outward in the transverse direction away from the accommodating tube 11, so that the distance between the two power connection ends 123 is as large as possible to reduce the risk of short circuit or discharge.

[0068] The main body 121 of the heating element 12 is solenoid-shaped, and the clamp 31 can be mounted on the axial end of the heating element 12, pressing the main body 121 and the power connection end 123 against the wall of the accommodating tube 11. When the clamp 31 rotates, the beginning and end of the main body 121 move away from or toward each other in the circumferential direction of the accommodating tube 11. The main body 121 becomes taut and its circumferential dimension decreases, and the heating element 12 converges toward the accommodating tube 11 around which it is wound, until the main body 121 is so tightly pressed against the outer wall of the accommodating tube 11 that it cannot move further. The heating element 12 then changes from the first dimensional state to the second dimensional state.

[0069] Optionally, the heating element 12 is made of metal, which has good electrical conductivity, is easy to shape, and has good heat resistance. For example, the heating element 12 is a metal wire, which is wound outside the accommodating tube 11 and has a solenoid shape as a whole and has a certain elasticity.

[0070] In some embodiments, the fixing device 30 further includes a first connecting member (not shown), which is disposed between the clamp 31 and the outer wall of the accommodating tube 11 and covers at least a portion of the heating element 12 .

[0071] In this way, the first connecting member (not shown) is arranged between the clamp 31 and the outer wall of the accommodating tube 11 and covers at least a portion of the heating element 12, so that the clamp 31 and the heating element 12 are connected to a fixed position on the outer wall of the accommodating tube 11, thereby avoiding to a certain extent the reduction in the locking force of the clamp 31 after thermal expansion, which causes the heating element 12 to move, thereby ensuring that the heating element 12 is stably attached to the accommodating tube 11 and maintaining efficient heat transfer.

[0072] Specifically, the first connector (not shown) can be structural adhesive, insulating adhesive, etc. The present application does not limit the connection position of the first connector (not shown). For example, when the clamp 31 is in the second position and the heating element 12 is in the second size, the first connector (not shown) can be dotted at the position where the heating element 12 passes through the clamp 31 and the accommodating tube 11. After curing, the first connector (not shown) covers the portion where the heating element 12 abuts the clamp 31, and the first connector (not shown) is connected to the clamp 31 on one side along the radial direction of the accommodating tube 11 and connected to the accommodating tube 11 on the other side, so that the heating element 12 remains in the second size and the clamp 31 remains in the second position.

[0073] See also Figure 1-Figure 3 In some embodiments, the aerosol generating device 100 includes a shell component 40, which is disposed outside the heating component 10. A reflection cavity 401 is formed between the shell component 40 and the accommodating tube 11, and the heating element 12 is at least partially disposed in the reflection cavity 401.

[0074] In this way, the shell assembly 40 is covered outside the heating assembly 10, and a reflection cavity 401 is formed between it and the accommodating tube 11. The heating element 12 is at least partially arranged in the reflection cavity 401, so that the shell assembly 40 can reflect heat to the accommodating tube 11, lock the heat in the heating assembly 10 and the reflection cavity 401 as much as possible, and improve the heating speed and efficiency.

[0075] Specifically, the housing assembly 40 can be an integral structure and form a sealed reflective cavity 401. Such a structure provides a good sealing performance for the reflective cavity 401. The housing assembly 40 can also be a split structure, and the connection methods between the split parts of the housing assembly 40 are not limited to adhesive connection, welding, riveting, screw connection, fastener connection, and other methods. For example, the split parts of the housing assembly 40 are connected by adhesive connection and sealed with glue to form a sealed reflective cavity 401.

[0076] The housing assembly 40 is disposed over the heating element 10. The housing assembly 40 may be a hollow cylindrical or columnar structure. With the axial direction of the accommodating tube 11 as the vertical direction, the cross-sectional shape of the housing assembly 40 may be the same as or different from the cross-sectional shape of the accommodating tube 11. For example, the cross-sectional shape of the housing assembly 40 may be, but is not limited to, a triangle, square, rectangle, rhombus, trapezoid, pentagon, hexagon, other polygons, star, circle, ellipse, or a racetrack.

[0077] It can be understood that the heat generated by the heating element 12 is dissipated in the form of infrared radiation. The reflection cavity 401 is formed outside the accommodating tube 11, and the shell assembly 40 reflects the infrared radiation back to the center of the reflection cavity 401, that is, the accommodating tube 11.

[0078] Optionally, the main body 121 of the heating element 12 is located in the reflective cavity 401 , and the power connection end 123 of the heating element 12 can extend from the reflective cavity 401 to the outside of the reflective cavity 401 to be connected to an external power source.

[0079] See also Figure 2 and Figure 4 In some embodiments, the aerosol generating device 100 includes a second connecting member 50, an installation groove 402 is formed between the shell component 40 and the accommodating tube 11, and the second connecting member 50 is filled in the installation groove 402. The second connecting member 50 is used to fix the shell component 40 and the heating component 10, and to seal the reflection cavity 401. The wall surface of the reflection cavity 401 surrounded by the shell component 40 is provided with a heat reflection layer 403.

[0080] In this way, the second connecting member 50 is filled in the installation groove 402 to fix the shell assembly 40 and the heating assembly 10, thereby preventing the heating assembly 10, especially the heating element 12, from moving to a certain extent, and forming a sealed reflection cavity 401 to reduce the pollution of oil smoke to the heating element 12. At the same time, the heat reflection layer 403 enhances the ability of the shell assembly 40 to reflect infrared rays, reduces heat loss, and further improves the heating effect.

[0081] Specifically, the housing assembly 40 can abut the axial end of the accommodating tube 11 and be spaced a certain distance from the outer wall of the accommodating tube 11 in the radial direction of the accommodating tube 11, thereby forming a reflective cavity 401 with both ends closed. The clamp 31 is sleeved on the axial end of the accommodating tube 11 and is spaced a certain distance from the end face of the accommodating tube 11 in the axial direction of the accommodating tube 11. The radially spaced and opposing area between the housing assembly 40 and the accommodating tube 11 forms a mounting groove 402, and the clamp 31 forms the bottom of the mounting groove 402.

[0082] The second connector 50 can be a sealant, structural adhesive, insulating adhesive, etc. The second connector 50 can be injected into the mounting groove 402 in liquid or semi-solid form to fill the gap between any two of the accommodating tube 11, the housing assembly 40, and the clamp 31. After curing, the second connector 50 connects the outer wall of the accommodating tube 11, the inner surface of the housing assembly 40, and the clamp 31, thereby strengthening the connection between the housing assembly 40 and the heating component 10 and improving the airtightness of the reflector cavity 401.

[0083] Specifically, the heat reflective layer 403 is a film layer capable of reflecting infrared rays, and the heat reflective layer 403 can be coated or plated on the wall surface of the housing assembly 40 that forms the reflective cavity 401. Optionally, the heat reflective layer 403 is a metal plating layer, for example, the heat reflective layer 403 is a gold plating film, a silver plating film, etc.

[0084] See also Figure 2 and Figure 3 In some embodiments, the cross-sectional inner contour of the housing assembly 40 is polygonal.

[0085] In this way, by setting the inner contour of the cross section of the shell component 40 to a polygonal shape, the inner wall surfaces of the shell component 40 are flat surfaces and form angles with each other, which is beneficial to improving the reflectivity of the shell component 40 to infrared radiation.

[0086] Specifically, the longitudinal direction of the housing tube 11 is defined as the longitudinal direction, and the transverse direction of the housing assembly 40 is perpendicular to the longitudinal direction. The inner cross-sectional profile of the housing assembly 40 is polygonal. The walls of the housing assembly 40 that enclose the reflective cavity 401 are all flat surfaces. An angle between two adjacent inner walls of the housing assembly 40 is greater than 0 degrees and less than 90 degrees, thereby increasing the number of infrared reflections and refractions in the reflective cavity 401. For example, the inner cross-sectional profile of the housing assembly 40 may be, but is not limited to, a square, a rhombus, a pentagon, a hexagon, an octagon, or the like.

[0087] The outer cross-sectional shape of the housing assembly 40 can be different from the inner cross-sectional shape. Due to the different inner and outer cross-sectional shapes, the housing assembly 40 has a non-uniform wall thickness in the circumferential direction. The inner and outer cross-sectional shapes of the housing assembly 40 can also be the same, which facilitates forming a housing assembly 40 with a uniform wall thickness, simplifies the production process, promotes uniform temperature distribution, and thus helps to increase service life.

[0088] Optionally, the outer cross-sectional shape of the housing assembly 40 may be polygonal, circular, elliptical, triangular, or racetrack-shaped, and the present application does not limit this. For example, the housing assembly 40 may be prismatic in shape, and the outer cross-sectional shape of the housing assembly 40 may be polygonal.

[0089] Optionally, the central axis of the housing assembly 40 can be aligned with the central axis of the accommodating tube 11 to improve the coaxiality of the overall product structure, facilitate assembly, and easily concentrate heat at the center of the assembly. Infrared radiation emitted from the interior of the housing assembly 40 by the heating element 12 is directed at the inner wall of the housing assembly 40 at various angles. The housing assembly 40 reflects and refracts the infrared radiation at various angles, concentrating heat in the reflective cavity 401 and reducing heat loss.

[0090] Alternatively, as Figure 3 As shown, the cross-sectional inner contour of the housing assembly 40 is a hexagon, which increases the inward reflectivity of the housing assembly 40 and reduces the volume of the housing assembly 40, thereby facilitating product miniaturization. For example, the cross-sectional shape of the housing assembly 40 is a regular hexagon, and the housing assembly 40 as a whole is a regular hexagonal prism.

[0091] See also Figure 2-Figure 4 In some embodiments, the shell assembly 40 is a split structure, and the shell assembly 40 includes an end cover 44 and an outer shell 45. The end cover 44 is connected to the outer shell 45 and is arranged at the axial end of the outer shell 45. The outer shell 45 surrounds the outside of the accommodating tube 11. The end cover 44, the outer shell 45, the accommodating tube 11 and the clamp 31 together form a reflection cavity 401.

[0092] In this way, the shell assembly 40 is set as a split structure, which is convenient for production and assembly. The end cover 44, the shell, the accommodating tube 11 and the clamp 31 together form a reflection cavity 401 to ensure full-angle reflection of infrared rays, which is beneficial to heat concentration and heat preservation.

[0093] Optionally, the housing 45 is prismatic, with a polygonal cross-section, thereby increasing the reflectivity of the housing 45 to infrared radiation and reducing the volume ratio. For example, the housing 45 is a hollow hexagonal prism with a hexagonal cross-section. The shape of the end cap 44 can match the cross-sectional shape of the housing 45; for example, the end cap 44 can be a hexagonal cap.

[0094] Optionally, the end cap 44 may be a flat prism, the height of the end cap 44 being much smaller than the outer shell 45, and being sleeved on the two axial ends of the outer shell 45. The end cap 44 includes a vertical plate 443 and a cover plate 441, the cover plate 441 being connected to the vertical plate 443 and forming an angle, the vertical plate 443 surrounding the end of the accommodating tube 11, and the cover plate 441 being connected to the vertical plate 443 and covering the two axial ends of the outer shell 45. The ends where the vertical plate 443 and the cover plate 441 are connected are fixedly and sealed to the outer shell 45. In this embodiment, the vertical plate 443, the outer shell 45 and the outer wall of the accommodating tube 11 are spaced a certain distance apart along the radial direction of the accommodating tube 11, and the interval between the outer shell 45 and the accommodating tube 11 forms a reflection cavity 401.

[0095] Optionally, the two cover plates 441 are coated with a heat reflecting layer 403 on the surfaces of one side opposite to the accommodating tube 11 in the axial direction, and the shell 45 is coated with a heat reflecting layer 403 on the surface of the side facing the accommodating tube 11 .

[0096] Optionally, the cover plate 441 extends along the radial direction of the accommodating tube 11, and the vertical plate 443 extends along the axial direction of the accommodating tube 11. Figure 1 A buckle edge 445 is formed at one end of the cover plate 441 away from the vertical plate 443. The buckle edge 445 extends along the axial direction of the shell 45 and forms an angle with the cover plate 441. The cover plate 441 and the buckle edge 445 cooperate and are buckled together with the end of the shell 45.

[0097] See also Figure 2 and Figure 4 In some embodiments, a mounting groove 402 is formed between the end cap 44 and the accommodating tube 11 , and the mounting groove 402 is filled with a second connecting member 50 . The second connecting member 50 is used to fix the end cap 44 and the accommodating tube 11 and to seal the reflection cavity 401 .

[0098] In this way, the second connecting member 50 is filled in the installation groove 402 and fixedly connects the end cover 44 and the accommodating tube 11, thereby preventing the heating component 10 from moving to a certain extent, ensuring that the heating element 12 is close to the accommodating tube 11, and forming a sealed reflection cavity 401, reducing oil fume pollution and heat loss, thereby improving the heating effect.

[0099] Specifically, the end cap 44 includes a vertical plate 443 radially opposite to the accommodating tube 11 and a cover plate 441 covering the axial end of the shell 45. The vertical plate 443 is connected to the cover plate 441 and can be an integral structure or a split structure. The vertical plate 443 and the outer wall of the accommodating tube 11 are radially opposite and spaced apart to form a mounting groove 402. The clamp 31 is sleeved on the axial end of the accommodating tube 11 and is spaced a certain distance from the end face of the accommodating tube 11. The clamp 31 can be arranged close to the cover plate 441. The side surface of the clamp 31 along the axial direction of the accommodating tube 11 close to the end face of the accommodating tube 11 forms the bottom surface of the mounting groove 402. The notch of the mounting groove 402 can be open to facilitate glue injection.

[0100] With the axial direction of the accommodating tube 11 as the vertical direction, that is, the up-down direction, a mounting groove 402 is formed above the clamp 31 mounted on the upper end of the accommodating tube 11, and a mounting groove 402 is formed below the clamp 31 mounted on the lower end of the accommodating tube 11. A reflective cavity 401 can be formed between the upper and lower clamps 31.

[0101] Optionally, the second connector 50 is a sealant, structural adhesive, insulating adhesive, or the like. The second connector 50 is injected into the mounting groove 402 in a liquid or semi-solid state, filling the gaps between the clamp 31, the vertical plate 443, and the outer wall of the accommodating tube 11, as well as between the heating element 12 passing between the clamp 31 and the accommodating tube 11 and the aforementioned three structures. After the second connector 50 solidifies, the end cap 44, the clamp 31, and the accommodating tube 11 are fixed and sealed together, sealing the reflector cavity 401.

[0102] See also Figure 2-Figure 4 In some embodiments, the aerosol generating device 100 further includes an insulating member 60 , which is disposed in the housing assembly 40 . The insulating member 60 is used to insulate and protect the end of the heating element 12 connected to the power supply.

[0103] In this way, the end of the heating element 12 connected to the power supply is insulated and protected by the insulating member 60, thereby preventing the heating element 12 from being electrically connected to the housing assembly 40 or other metal parts and causing a short circuit.

[0104] Specifically, the insulating member 60 can be a variety of structures, such as insulating glue, insulating coating, insulating housing, insulating block, insulating sleeve, etc., and this application does not impose any restrictions on this. The insulating member 60 is disposed in the housing assembly 40 and can be installed in the reflective cavity 401 or incorporated into or installed in the housing assembly 40. The insulating member 60 can cooperate with the clamp 31, and the end of the heating element 12 connected to the power supply, i.e., the power supply end 123, at least partially passes through or contacts the insulating member 60.

[0105] See also Figure 2-Figure 4In some embodiments, the housing assembly 40 is made of metal, and the insulating member 60 is sleeved on the accommodating tube 11. The insulating member 60 is located on the side of the end of the clamp 31 facing the end connected to the heating element 12. In other embodiments, the insulating member 60 is coated on the end connected to the heating element 12. In other embodiments, the housing assembly 40 is made of an insulating material, and the housing assembly 40 forms the insulating member 60.

[0106] In this way, by sleeved on the accommodating tube 11 and located on the side of the clamp 31 facing the power connection end 123 of the heating element 12, the insulating member 60 can prevent the heating element 12 from being electrically connected to the metal shell assembly 40, thereby ensuring that the heating element 12 is smoothly connected to the power supply. The purpose of preventing short circuits can also be achieved by coating the insulating member 60 on the power connection end of the heating element 12. When the shell assembly 40 is made of an insulating material, there is almost no electrical connection between the shell assembly 40 and the heating element 12, which can also prevent short circuits.

[0107] Optionally, the shell assembly 40 is made of metal, and the insulating member 60 is sleeved on the accommodating tube 11. The insulating member 60 is roughly annular, and the insulating member 60 is located on the side of the end of the clamp 31 facing the heating element 12 that is connected to the power supply. With the axial direction of the accommodating tube 11 as the vertical direction, that is, the up and down direction, the insulating member 60 and the clamp 31 are stacked up and down, and the insulating member 60 is located above the clamp 31 at the upper end of the accommodating tube 11, and the insulating member 60 is located below the clamp 31 at the lower end of the accommodating tube 11. The end of the heating element 12 that is connected to the power supply, that is, the power supply end 123, extends from the inside of the reflection cavity 401 through between the clamp 31 and the wall of the accommodating tube 11 and continues to extend outside the shell assembly 40, passing through the insulating member 60, or passing through the insulating member 60 and the wall of the accommodating tube 11.

[0108] In this embodiment, the insulating member 60 is located in the installation groove 402. When the second connecting member 50 is injected into the installation groove 402, it also covers part of the surface of the insulating member 60 and fills the gap between the insulating member 60 and the accommodating tube 11, the clamp 31, and the end cover 44 to ensure the sealing of the reflection cavity 401.

[0109] Furthermore, the insulating member 60 may be made of ceramic or PEEK plastic.

[0110] Optionally, the insulating member 60 is coated on the end of the heating element 12 connected to the power supply. The insulating member 60 can be made of rubber or other plastic materials.

[0111] Optionally, the power connection end 123 of the heating element 12 passes through the housing assembly 40. For example, the power connection end 123 extends along the axial direction of the accommodating tube 11 and is inserted into the end cap 44. The housing assembly 40 is made of an insulating material. For example, the housing assembly 40 can be made of ceramic, quartz, high-temperature resistant plastic, etc., to ensure good structural strength and heat resistance, while providing insulation protection for the heating element 12.

[0112] In some embodiments, the containing tube 11 is a transparent quartz tube.

[0113] Thus, the accommodating tube 11 is a transparent quartz tube, which increases the transmittance of infrared radiation, thereby improving the efficiency of heat transfer from the heating element 12 to the aerosol generating matrix, which is conducive to rapid heating and atomization.

[0114] Specifically, the accommodating tube 11 is a hollow transparent quartz tube, and the wall thickness of the accommodating tube 11 can range from 0.3 mm to 0.4 mm. It is understood that the heat generated by the heating element 12 is dissipated in the form of infrared radiation. The transparent quartz tube 11 increases the amount of infrared radiation that passes through the accommodating tube 11 and reaches the aerosol-generating substrate, thereby improving the heating speed and efficiency.

[0115] Optionally, the accommodating tube 11 may be a completely transparent quartz tube or partially transparent. If the accommodating tube 11 is a partially transparent quartz tube, at least the wall of the accommodating tube 11 opposite the heating element 12 is transparent. For example, the heating element 12 is sleeved in the middle section of the accommodating tube 11, and the middle section of the accommodating tube 11 is a transparent quartz tube.

[0116] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this 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 appropriate manner in any one or more embodiments or examples.

[0117] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An aerosol generating device comprising a heating component, characterized in that: The heating component includes: a receiving tube, wherein the receiving tube is formed with a receiving space for receiving the aerosol generating substrate; a heating element, the heating element being arranged on an outer side of the accommodating tube away from the accommodating space, the heating element being used to generate heat when powered; and A fixing device, wherein the fixing device includes a clamp, which is arranged outside the heating element and abuts against the accommodating tube. The heating element has a first size state and a second size state. A gap is formed between the heating element and the accommodating tube in the first size state. The heating element is tightly attached to the accommodating tube in the second size state. The clamp has a first position state and a second position state. The clamp can be rotated from the first position state to the second position state to drive the heating element to change from the first size state to the second size state.

2. The aerosol generating device according to claim 1, wherein The heating element is cylindrical in shape as a whole, and the clamp is sleeved on the axial end of the heating element; and / or, The heating element is wound around the outside of the accommodating tube and spirally extends along the axial direction of the accommodating tube.

3. The aerosol generating device according to claim 1, wherein The fixing device further includes a first connecting member, which is disposed between the clamp and the outer wall of the accommodating tube, and covers at least a portion of the heating element.

4. The aerosol generating device according to claim 1, wherein The aerosol generating device includes a shell component, the shell component is arranged outside the heating component, a reflection cavity is formed between the shell component and the accommodating tube, and the heating element is at least partially arranged in the reflection cavity.

5. The aerosol generating device according to claim 4, characterized in that The aerosol generating device includes a second connecting member, an installation groove is formed between the shell assembly and the accommodating tube, the second connecting member is filled in the installation groove, the second connecting member is used to fixedly connect the shell assembly and the heating assembly, and to seal the reflection cavity, and the wall surface of the reflection cavity surrounded by the shell assembly is provided with a heat reflection layer.

6. The aerosol generating device according to claim 4, characterized in that The inner contour shape of the cross section of the housing assembly is polygonal.

7. The aerosol generating device according to claim 4, wherein: The shell assembly is a split structure, and the shell assembly includes an end cover and an outer shell. The end cover is connected to the outer shell and is arranged at the axial end of the outer shell. The outer shell surrounds the outside of the accommodating tube. The end cover, the outer shell, the accommodating tube and the clamp together form the reflection cavity.

8. The aerosol generating device according to claim 7, wherein: An installation groove is formed between the end cover and the accommodating tube. The installation groove is filled with a second connecting member. The second connecting member is used to fixedly connect the end cover and the accommodating tube and to seal the reflective cavity.

9. The aerosol generating device according to claim 4, wherein: The aerosol generating device further includes an insulating member, which is disposed in the housing assembly and is used to insulate and protect the end of the heating element connected to electricity.

10. The aerosol generating device according to claim 9, characterized in that The shell assembly is made of metal, the insulating part is sleeved on the accommodating tube, and the insulating part is located on the side of the end of the clamp facing the power supply of the heating element; or, the insulating part is coated on the power supply end of the heating element; or, the shell assembly is made of insulating material, and the shell assembly forms the insulating part.

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