Heating device and aerosol generating equipment

Abstract

The utility model relates to the technical field of aerosol generation, in particular to a heating device and aerosol generation equipment. The heating device comprises a device body, a heat conduction cylinder, a heating assembly and an insertion piece, the heat conduction cylinder is suspended in the device body, the heating assembly is arranged at the end, away from the containing opening, of the heat conduction cylinder, a heating cavity is defined by the heating assembly and the heat conduction cylinder, and the insertion piece is arranged on the side, facing the containing opening, of the heating assembly. The inserting piece can be inserted into the aerosol generating product contained in the heating cavity, limiting protrusions are arranged on the inner wall of the heat conduction cylinder and / or the side face, facing the containing opening, of the heating assembly, and the limiting protrusions are used for supporting the aerosol generating product so that an airflow space can be formed between the end of the aerosol generating product and the heating assembly. Due to the arrangement of the heat conduction cylinder, the insertion piece and the airflow space, aerosol can be quickly generated, and the aerosol generation product is fully and uniformly heated, so that the smoking taste of a user can be improved, and the use feeling of the user is improved.

Description

TECHNICAL FIELD

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

[0002] The aerosol generation apparatus is a device that generates aerosol by heating an aerosol generation article using the principle of heating without combustion for a user to use. Generally, the heating methods used include center heating and surrounding heating. Although the center heating method can quickly form aerosol, the heating area is small and the energy is concentrated, which can easily burn the aerosol generation article. Although the surrounding heating method can increase the heating area, the speed of forming aerosol is slow, and the aerosol generation article at the periphery in contact with the heat source is heated, while the aerosol generation article in the middle far from the heat source is not heated sufficiently, resulting in insufficient release, thereby affecting the full use of the aerosol generation article and causing poor user experience. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heating device and an aerosol generation apparatus, which can accelerate the speed of generating aerosol and fully realize the heating of the aerosol generation article, thereby improving the user experience.

[0004] The present application provides a heating device, comprising:

[0005] a device body, wherein a containing opening is arranged on the device body;

[0006] a heat-conducting cylinder, wherein the heat-conducting cylinder is suspended in the interior of the device body;

[0007] a heating assembly, wherein the heating assembly is arranged at one end of the heat-conducting cylinder away from the containing opening, and forms a heating cavity together with the heat-conducting cylinder, the heating cavity is in communication with the containing opening, and the containing opening is used for inserting and containing the aerosol generation article in the heating cavity; and

[0008] an insert, wherein the insert is arranged on one side of the heating assembly facing the containing opening, and is used for inserting into the aerosol generation article contained in the heating cavity;

[0009] wherein a limiting protrusion is arranged on the inner wall of the heat-conducting cylinder and / or the side of the heating assembly facing the containing opening, the limiting protrusion is used for supporting the aerosol generation article to form an airflow space between the end of the aerosol generation article and the heating assembly, and the airflow space is in communication with the outside through the heating cavity and the containing opening in sequence.

[0010] In some embodiments, the heating assembly comprises a heating coil and an induction body, the induction body and the heat-conducting cylinder enclosing the heating cavity, the heating coil being arranged on a side of the induction body away from the accommodation opening, the heating coil being used to generate an alternating magnetic field in an alternating current to cause the induction body to be inductively heated.

[0011] In some embodiments, the heating assembly comprises a heating body and a heat-conducting body, the heat-conducting body and the heat-conducting cylinder enclosing the heating cavity, the heating body being arranged on a side of the heat-conducting body away from the heating cavity, the heating body being used to generate heat by being electrified.

[0012] In some embodiments, the heating body comprises a heating wire, a heating filament or a heating film.

[0013] In some embodiments, the heat-conducting cylinder is made of an infrared heat-conducting material.

[0014] In some embodiments, the inner wall of the heat-conducting cylinder is provided with a plurality of airflow grooves, two ends of the airflow grooves being in communication with the accommodation opening and the airflow space, respectively.

[0015] In some embodiments, a plurality of limiting protrusions are provided, the plurality of limiting protrusions all extending along the axial direction of the heat-conducting cylinder and being uniformly spaced along the circumference of the heat-conducting cylinder or the heating assembly, an air inlet gap being formed between any two adjacent limiting protrusions, the airflow grooves being in communication with the airflow space through the airflow passage.

[0016] In some embodiments, the inner wall of the heat-conducting cylinder is provided with an anti-sticking coating.

[0017] In some embodiments, the device body comprises a support shell, a base and a cover, the accommodation opening being formed on the support shell, the cover being inserted into the support shell from the accommodation opening; the inside of the support shell is provided with a support protrusion, the opening end of the heat-conducting cylinder close to the accommodation opening is provided with a flange, the flange being protrudingly arranged on the outer wall of the heat-conducting cylinder in a direction away from the heating cavity, the flange being clamped between the support protrusion and the cover to make the heat-conducting cylinder coaxially suspended in the support shell; the base is arranged on a side of the support shell away from the accommodation opening, used to block the support shell, and the base is spaced apart from the heating assembly.

[0018] The application also provides an aerosol generating device, comprising a shell assembly, a power supply assembly and a heating device as described above, the power supply assembly and the heating device being arranged in the shell assembly, and the power supply assembly and the heating device being electrically connected.

[0019] According to the heating device in the above embodiment, the heating device comprises a device body, a heat conduction cylinder, a heating assembly and an insert. The heating assembly is arranged at one end of the heat conduction cylinder as a heat source. The heat conduction cylinder and the heating assembly enclose a heating cavity. The heat conduction cylinder can be in contact with the heating assembly to realize heat conduction and heat transfer. The heat transferred to the heat conduction cylinder can surround the aerosol generating article to realize surrounding heating. The insert is arranged on the side of the heating assembly facing the accommodation opening and can be in contact with the heating assembly to realize heat conduction and heat transfer. The heat transferred to the insert can heat the center of the aerosol generating article to realize central heating. The inner wall of the heat conduction cylinder and / or the side of the heating assembly facing the accommodation opening is provided with a limiting protrusion, so that an airflow space is formed between the end of the aerosol generating article and the heating assembly. The airflow space is in communication with the outside through the heating cavity and the accommodation opening in sequence. Therefore, the air from the outside can enter the heating cavity and be heated by the heat transferred to the heat conduction cylinder to form a hot air flow. The hot air flow enters the inside of the aerosol generating article through the airflow space and the end of the aerosol generating article in sequence. The aerosol generating article is heated by the hot air flow. The combination of the three heating methods of surrounding heating, central heating and hot air flow heating can increase the heating area and the heating temperature of the aerosol generating article. The aerosol generating article can generate aerosol quickly. The combination of the three methods can heat any position of the aerosol generating article, so that the aerosol generating article is heated sufficiently and uniformly, thereby improving the smoking taste of the user and improving the use experience of the user. The combination of the above three methods can also increase the heating distance along the axis of the aerosol generating article, so that the part of the aerosol generating article along the axis is uniformly heated. Due to the arrangement of the limiting protrusion, the end of the aerosol generating article is away from the heat source, so that the temperature of the end of the aerosol generating article can be reduced, avoiding the phenomenon that the end of the aerosol generating article is burnt and produces peculiar smell due to direct contact with the heat source. The temperature of the aerosol coming out of the accommodation opening can also be reduced to avoid scalding the user due to the high temperature of the aerosol. Since the heating assembly is arranged at one end of the heat conduction cylinder and the heating assembly is suspended in the device body, the contact area of the heating assembly and the device body can be reduced, thereby reducing heat loss and improving heat utilization rate. Due to the arrangement of the airflow space, the hot air flow can be temporarily stored, so that the hot air flow can continuously heat the aerosol generating article to ensure the continuous generation of aerosol. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural cross-sectional view of the use state of the aerosol generating equipment in an embodiment.

[0021] Figure 2 It is a structural cross-sectional view of the aerosol generating equipment in an embodiment.

[0022] Figure 3 It is a structural cross-sectional view of the heating device in an embodiment.

[0023] Figure 4 Structure sectional view of the combination of the heat-conducting cylinder, the heating assembly and the insert in one embodiment;

[0024] Figure 5 Structure sectional view of the heating assembly in the first embodiment;

[0025] Figure 6 Structure schematic view of the heating assembly in the second embodiment;

[0026] Figure 7 Structure schematic view of the heating assembly in the third embodiment;

[0027] Figure 8 Structure schematic of the insert in one embodiment;

[0028] Figure 9 Structure exploded view of the heating device in one embodiment.

[0029] Wherein: 1, the shell assembly; 11, the mounting space; 2, the power supply assembly; 21, the battery; 22, the control circuit board; 3, the heating device; 31, the device main body; 311, the support shell; 3111, the containing opening; 3112, the support protrusion; 312, the base; 313, the cover; 314, the positioning ring; 3141, the positioning protrusion; 32, the heat-conducting cylinder; 321, the airflow groove; 322, the flange; 33, the heating assembly; 331, the heating coil; 332, the inductor; 333, the heating body; 3331, the heating circuit; 3332, the heating wire; 334, the heat-conducting body; 34, the insert; 341, the tip part; 342, the base part; 343, the sheet body; 35, the heating cavity; 36, the limiting protrusion; 37, the airflow space; 38, the air inlet gap; A, the aerosol generating article. DETAILED DESCRIPTION

[0030] The application will be described in further detail below with specific embodiments and with reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following embodiments, many details are described in order to provide a better understanding of the application. However, a person skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, methods. In some cases, some operations related to the application are not shown or described in the specification in order to avoid the core of the application being overwhelmed by too much description, and it is not necessary to describe these related operations in detail for a person skilled in the art based on the description in the specification and general technical knowledge in the art.

[0031] In addition, features described in the specification, operation or characteristics can be combined in any suitable manner in various embodiments, and the steps of the operations involved in each embodiment can be sequentially exchanged or adjusted in a manner that can be apparent to those skilled in the art. Therefore, the description and drawings are only for the purpose of clearly describing one embodiment, and do not mean that the composition and / or order is necessary.

[0032] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "coupling" in this application include direct and indirect connection (coupling) unless otherwise specified.

[0033] The present application provides an aerosol generating device (hereinafter referred to as "generating device") which heats the aerosol generating article A by using the principle of heating without combustion, so as to generate aerosol for the user to use.

[0034] It should be noted that the term "aerosol" in the specification refers to a dispersion of solid or liquid particles in a gas. As used herein, "aerosol" can be used to refer to a substance that has been vaporized, atomized, in the form of a spray or jet, or otherwise converted from a solid or liquid form to an inhalable form comprising suspended solid or liquid drug particles.

[0035] As used herein, the term "aerosol generating article A" refers to any suitable compound or mixture of compounds that facilitate aerosol (e.g., stable aerosol that substantially resists thermal degradation at the operating temperature of the system) formation in use. Suitable aerosol generating articles A are well known in the art and include, but are not limited to: polyhydric alcohols such as triethylene glycol, 1,3-butanediol, and glycerol; esters of polyhydric alcohols such as glycerol mono-, di-, or triacetate; and aliphatic esters of mono-, di-, or poly-carboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate.

[0036] The aerosol generating article A can include nicotine. The aerosol generating article A can include water. The aerosol generating article A can include glycerol (also known as glycerin), which has a higher boiling point than nicotine. The aerosol generating article A can include propylene glycol. The aerosol generating article A can include plant-based material. The aerosol generating article A can include homogenized plant-based material. The homogenized plant-based material can contain volatile compounds. These compounds can be released from the aerosol generating article A upon heating. The aerosol generating article A can be wrapped and formed by a soft paper material or a hard material, and the appearance of the aerosol generating article A is generally in the form of a cylinder.

[0037] Please refer to Figure 1 and Figure 2The generating device comprises a shell assembly 1, a power supply assembly 2 and a heating device 3. The shell assembly 1 can be assembled by one or more fittings, used for accommodating the power supply assembly 2 and the heating device 3. The shell assembly 1 is internally provided with a mounting space 11, and the power supply assembly 2 and the heating device 3 are arranged in the mounting space 11. The shell assembly 1 facilitates the transportation and carrying of the device. The power supply assembly 2 and the heating device 3 are electrically connected. The power supply assembly 2 comprises a battery 21, a control circuit board 22 and a control button (not shown in the figure). The power supply assembly 2 provides the power required for the operation of the heating device 3, and can also control the adjustment of the working power (or working temperature) of the heating device 3. The heating device 3 is used for heating the aerosol generating article A to form an aerosol.

[0038] Since the power supply assembly 2 and the shell assembly 1 have been disclosed in the prior art, they do not belong to the core of the improvement of the present application. The structure of the heating device 3 will be described in detail below.

[0039] Please refer to Figures 2 to 9 The heating device 3 comprises a device body 31, a heat-conducting cylinder 32, a heating component 33 and an insertion piece 34. The device body 31 is provided with a receiving opening 3111. The heat-conducting cylinder 32 is suspended in the interior of the device body 31. The heat-conducting cylinder 32 has a hollow structure with open ends. The heating component 33 is arranged at one end of the heat-conducting cylinder 32 away from the receiving opening 3111, and forms a heating cavity 35 together with the heat-conducting cylinder 32. The heating cavity 35 is in communication with the receiving opening 3111. The receiving opening 3111 is used for inserting and accommodating the aerosol generating article A in the heating cavity 35. The insertion piece 34 is arranged on the side of the heating component 33 facing the receiving opening 3111. The insertion piece 34 can be inserted into the aerosol generating article A accommodated in the heating cavity. The inner wall of the heat-conducting cylinder 32 and / or the side of the heating component 33 facing the receiving opening 3111 is provided with a limiting protrusion 36. The limiting protrusion 36 is used for supporting the aerosol generating article A to form an airflow space 37 between the end of the aerosol generating article A and the heating component 33. The airflow space 37 is in communication with the outside through the heating cavity 35 and the receiving opening 3111 in sequence.

[0040] The heating assembly 33 in the present application serves as a heat source and is arranged at one end of the heat conduction cylinder 32. The heat conduction cylinder 32 serves as a structure for accommodating the aerosol generating article A and only has a heat conduction effect. Since the heat conduction cylinder 32 and the heating assembly 33 enclose the heating cavity 35, the heat conduction cylinder 32 can be in contact with the heating assembly 33 to conduct heat and transfer heat to the heat conduction cylinder 32. The heat transferred to the heat conduction cylinder 32 can surround the aerosol generating article A to heat the aerosol generating article A. The insert 34 is arranged on the side of the heating assembly 33 facing the accommodation opening 3111 and can be in contact with the heating assembly 33 to conduct heat and transfer heat to the insert 34. The heat transferred to the insert 34 can heat the aerosol generating article A from the center. Since the inner wall of the heat conduction cylinder 32 and / or the side of the heating assembly 33 facing the accommodation opening 3111 is provided with the limiting protrusion 36, an airflow space 37 is formed between the end of the aerosol generating article A and the heating assembly 33. The airflow space 37 communicates with the outside through the heating cavity 35 and the accommodation opening 3111 in sequence, so that the air from the outside can enter the heating cavity 35 and be heated by the heat transferred to the heat conduction cylinder 32 to form a hot air flow. The hot air flow enters the inside of the aerosol generating article A through the airflow space 37 and the end of the aerosol generating article A in sequence. The aerosol generating article A is heated by the hot air flow.

[0041] The combination of the three heating methods of surrounding heating, central heating and hot air flow heating can increase the heating area and heating temperature of the aerosol generating article A, so that the aerosol generating article A can quickly generate aerosol. The combination of the three methods can heat any position of the aerosol generating article A, so that the aerosol generating article A is fully and uniformly heated, thereby improving the smoking taste of the user and improving the user's experience.

[0042] Based on heat transfer, the temperature of the part of the heat conduction cylinder 32 away from the heating assembly 33 is lower than that of the part close to the heating assembly 33. The combination of the above three methods, especially the airflow heating method, can increase the heating distance along the axis of the aerosol generating article A, so that the part of the aerosol generating article A along the axis is uniformly heated.

[0043] Due to the arrangement of the limiting protrusion 36, the end of the aerosol generating article A is away from the heat source, so that the temperature of the end of the aerosol generating article A can be reduced, avoiding the phenomenon that the end of the aerosol generating article A is burnt and produces peculiar smell due to direct contact with the heat source. The temperature of the aerosol coming out of the accommodation opening 3111 can also be reduced, avoiding the phenomenon that the user is scalded by the aerosol with too high temperature.

[0044] Since the heating assembly 33 is arranged at one end of the heat conduction cylinder 32 and the heating assembly 33 is suspended in the device main body 31, the contact area of the heating assembly 33 and the device main body 31 can be reduced, thereby reducing heat loss and improving heat utilization.

[0045] Due to the arrangement of the airflow space 37, the hot airflow can be temporarily stored, thereby ensuring that the hot airflow can continuously heat the aerosol generating article A to ensure continuous generation of the aerosol.

[0046] It should be noted that the aerosol generating article A generally includes a smoking section, an airflow section, and a substrate section arranged in sequence along the axial direction, and the substrate section contains a substance capable of generating an aerosol by heating. When the aerosol generating article A is loaded, the substrate section is completely placed in the heating cavity 35, and the insert 34 is also inserted into the substrate section.

[0047] Please refer to Figure 5 In some specific embodiments, the heating assembly 33 includes a heating coil 331 and an inductor 332. The heating coil 331 is arranged on the side of the inductor 332 away from the accommodation opening 3111. The inductor 332 and the heat-conducting cylinder 32 enclose the heating cavity 35. The heating coil 331 is used to generate an alternating magnetic field in an alternating current, so that the inductor 332 is inductively heated in the alternating magnetic field. The inductor 332 is made of a soft magnetic material, such as SUS430, SPCE, etc., and can generate heat as a heat source in the alternating magnetic field. The heat-conducting cylinder 32 and the insert 34 are made of high-thermal-conductivity materials, such as aluminum alloy, copper, aluminum nitride, ceramic material, etc., and are preferably made of ceramic material, which can improve the heat conduction efficiency and heating efficiency. The heating coil 331 is electrically connected to the control circuit board 22 and the battery 21 of the power supply assembly 2 through a wire, and the alternating current required for its operation can be adjusted to adjust the heating temperature of the inductor 332. In this embodiment, the inductor 332 and the heat-conducting cylinder 32 can be integrally formed, thereby improving the sealing of the device. Of course, the inductor 332 and the heat-conducting cylinder 32 can also be a split structure.

[0048] In some specific embodiments, the heating assembly 33 comprises a heating body 333 and a heat-conducting body 334, the heat-conducting body 334 and the heat-conducting cylinder 32 enclose a heating cavity 35, and the heating body 333 is arranged on the heat-conducting body 334, which can be arranged on any one of the two sides of the heat-conducting body 334. When arranged on the side away from the heating cavity 35, the distance between the heating body 333 and the aerosol generating article A can be further increased, and the temperature of the aerosol can be reduced to avoid scalding the user. The heating body 333 is used for heating by electricity, and the heat-conducting body 334 can transfer the heat generated by the heating body 333 to the heat-conducting cylinder 32 and the insert 34. The heat-conducting cylinder 32 can not only heat the aerosol generating article A by heat conduction, but also heat the air entering from the outside to form a hot air flow, which can heat the aerosol generating article A by the hot air flow. The heat-conducting body 334, the heat-conducting cylinder 32 and the insert 34 are all made of high-heat-conducting materials, which can improve the heat-conducting efficiency and the heating efficiency. For example, the materials can be aluminum alloy, copper, aluminum nitride, ceramic material, etc., and the ceramic material is preferred. In this embodiment, the heat-conducting body 334 and the heat-conducting cylinder 32 can be integrally formed, thereby improving the sealing performance of the device. Of course, the heat-conducting body 334 and the heat-conducting cylinder 32 can also be separate structures.

[0049] Referring to Figure 6 In one specific embodiment, the heating body 333 comprises a heating circuit 3331, which can be formed by printing conductive paste on the heat-conducting body 334. The conductive paste can include silver paste, gold paste or tin paste, etc. The heating circuit 3331 is electrically connected to the control circuit board 22 and the battery 21 of the power supply assembly 2 through external wires, and the alternating current required for the operation of the heating circuit 3331 can be adjusted, thereby adjusting the heating temperature of the induction body 332.

[0050] Referring to Figure 7 In another specific embodiment, the heating body 333 comprises a heating wire 3332, which can be packaged on the heat-conducting body 334 by ceramic glue. The heating wire 3332 can not only be fixed, but also be insulated from other structures. The heating wire 3332 is electrically connected to the control circuit board 22 and the battery 21 of the power supply assembly 2 through external wires, and the alternating current required for the operation of the heating wire 3332 can be adjusted, thereby adjusting the heating temperature of the induction body 332. The heating wire 3332 can be made of metal materials such as iron-nickel alloy and titanium, and the ceramic glue can include but is not limited to aluminum oxide or silicon oxide.

[0051] Of course, the heating body 333 can comprise a heating film, which is fixed on the heat-conducting body 334 by gluing or printing. The heating film can be formed by thickly coating conductive metal paste.

[0052] In some embodiments, in order to improve the heating efficiency and improve the taste of the aerosol, the heat-conducting cylinder 32 is made of infrared heat-conducting material, and infrared radiation heating can penetrate the aerosol generating article A, so that the generated aerosol aroma is more pure.

[0053] Since the aerosol generating article A is arranged in the heating cavity 35 formed by the heat-conducting cylinder 32 and the heating assembly, when the inner wall of the aerosol generating article A and the heat-conducting cylinder 32 are in direct contact, the packaging paper of the aerosol generating article A may be burnt due to excessive temperature, causing off-flavor and affecting the taste of the aerosol. Therefore, the aerosol generating article A should be arranged at a distance from the inner wall of the heat-conducting cylinder 32, which can not only avoid the generation of off-flavor, but also form an air inlet channel. One end of the air inlet channel communicates with the accommodation opening 3111, and the other end communicates with the airflow space 37, so that external air enters the airflow space 37 from the air inlet channel. At the same time, the external air is heated into a hot air flow during circulation.

[0054] Please refer to Figure 3 and Figure 4 In some embodiments, a plurality of airflow grooves 321 are arranged on the inner wall of the heat-conducting cylinder 32, and the plurality of airflow grooves 321 serve as air inlet channels. The two ends of the airflow grooves 321 respectively communicate with the accommodation opening 3111 and the airflow space 37. The protrusions between the corresponding plurality of airflow grooves 321 are arranged to abut against the outer wall of the aerosol generating article A, thereby fixing the aerosol generating article A and facilitating the coaxial installation of the aerosol generating article A and the heating cavity 35, so as to ensure that the aerosol generating article A is uniformly heated.

[0055] In a specific embodiment, the airflow grooves 321 extend along the axial direction of the heat-conducting cylinder 32, and the extension length is less than or equal to the length of the heat-conducting cylinder 32. The plurality of airflow grooves 321 form a plurality of air inlet channels that pass through the heat-conducting cylinder 32 in the axial direction, thereby reducing air resistance and reducing the resistance of the user during suction.

[0056] In some specific embodiments, the limiting protrusion 36 can be provided with one, and arranged at any position on the inner wall of the heat-conducting cylinder 32 close to the heating assembly 33, or arranged at any position of the heating assembly 33, so that when the aerosol generating article A is loaded, the limiting protrusion 36 and the heating assembly 33 form the airflow space 37.

[0057] In some specific embodiments, the limiting protrusions 36 can be configured as strip-shaped protrusions extending along the axial direction of the heat conduction cylinder 32. The strip-shaped protrusions are configured to extend along the axial direction of the heat conduction cylinder 32, thereby further reducing the air flow resistance and allowing the air to smoothly enter the air flow space 37.

[0058] In some specific embodiments, the limiting protrusions 36 can be configured as strip-shaped protrusions extending along the axial direction of the heat conduction cylinder 32. The strip-shaped protrusions are configured to extend along the axial direction of the heat conduction cylinder 32, thereby further reducing the air flow resistance and allowing the air to smoothly enter the air flow space 37.

[0059] In some embodiments, the air inlet gaps 38 formed between the limiting protrusions 36 and the air flow grooves 321 are arranged in one-to-one correspondence and in communication with each other, so that the air inlet gaps 38 and the air flow grooves 321 form a straight-through structure extending along the axial direction of the heat conduction cylinder 32, thereby further reducing the air flow resistance.

[0060] In some specific embodiments, the limiting protrusions 36 can also be point-shaped or block-shaped protrusions arranged on the inner wall of the heat conduction cylinder 32 or the heating assembly 33. The point-shaped or block-shaped protrusions can be cylindrical, conical or rectangular. A plurality of limiting protrusions 36 are uniformly arranged along the circumferential direction of the heat conduction cylinder 32 or the heating assembly 33, so that the air inlet gaps 38 are uniformly arranged, thereby allowing the air to uniformly enter the air flow space 37 along the air inlet gaps 38 after the aerosol generating article A is inserted.

[0061] Please refer to Figure 5 and Figure 7 The insert 34 includes a tip portion 341 and a base portion 342. One end of the base portion 342 is arranged at the middle portion of the heating assembly 33, and the other end is connected to the tip portion 341. The tip portion 341 is used to pierce the aerosol generating article A, and at least part of the base portion 342 is inserted into the center of the aerosol generating article A, so as to ensure that the aerosol generating article A is coaxially arranged with the heating cavity 35, thereby allowing the aerosol generating article A to be uniformly heated. The main function of the insert 34 is heat conduction, which is made of high-thermal-conductivity materials, such as aluminum alloy, copper, aluminum nitride, and non-conductive ceramic materials.

[0062] In some specific embodiments, the insert 34 is configured as a needle-shaped structure, a rod-shaped structure or a sheet-shaped structure, one end of the needle-shaped structure, the rod-shaped structure and the sheet-shaped structure is provided with a pointed end 341, and the insert 34 can be a solid structure or an internally hollow structure, thereby reducing the mass and cost of the heating device 3.

[0063] In other specific embodiments, referring to Figure 8 , the insert 34 is configured as a radial structure mainly formed by a plurality of sheet-shaped bodies 343, one end of the plurality of sheet-shaped bodies 343 is connected, the other end is radially arranged outwardly with the axis of the insert 34 as the center, and adjacent two sheet-shaped bodies 343 are arranged at the same angle, so that the insert 34 and the aerosol generating article A are uniformly contacted.

[0064] Since the inner wall of the heat conduction cylinder 32 can be in contact with the aerosol generating article A, the inner wall of the heat conduction cylinder 32 is provided with an anti-sticking coating (not shown in the figure), which can reduce the adhesion of the aerosol generating article A on the heat conduction cylinder 32. The anti-sticking coating is a dense coating structure formed by spraying a nano material or a ceramic material.

[0065] Referring to Figure 9 , the device body 31 includes a support shell 311, a base 312 and a cover 313, a containing opening 3111 is formed in the support shell 311, the cover 313 is inserted into the support shell 311 from the containing opening 3111, the inside of the support shell 311 is provided with a support protrusion 3112, the support protrusion 3112 is arranged to extend from the inner wall of the support shell 311 to the center direction, the flange 322 is provided on the outer wall of the heat conduction cylinder 32 in the direction away from the heating cavity 35, the flange 322 is clamped between the support protrusion 3112 and the cover 313, so that the heat conduction cylinder 32 is coaxially suspended in the support shell 311, the base 312 is arranged on the side of the support shell 311 away from the containing opening 3111, used for sealing the support shell 311, and the base 312 is arranged in a spaced manner with the heating assembly 33, which can reduce the area of contact between the heating device 3 and the heating assembly 33, thereby reducing heat loss and improving the heating efficiency of the heating device 3.

[0066] In order to improve the heating efficiency of the heating device 3 and reduce heat loss, the support shell 311 of the device body 31 has good heat preservation and insulation effect, which is made of a material with low thermal conductivity, and at the same time, since the space enclosed by the base 312 and the support shell 311 has a high temperature, the base 312 and the support shell 311 are made of a high-temperature-resistant material, such as PEEK material.

[0067] The device body 31 further comprises a positioning ring 314, which is arranged on the side of the cover 313 away from the heat-conducting cylinder. The inner wall of the positioning ring 314 is provided with a plurality of positioning protrusions 3141, which can abut against the outer wall of the aerosol generating article A, further position it, and center it. The plurality of positioning protrusions 3141 are arranged at intervals, and the gaps between the plurality of positioning protrusions 3141 are in communication with the accommodation opening 3111 and the heating cavity 35, so that external air can enter the heating cavity 35 through the gaps between the plurality of positioning protrusions 3141 and the accommodation opening 3111 in sequence. The positioning protrusions 3141 can also be in a strip structure or a point structure. When the positioning protrusions 3141 are in a point structure, the cross section of the positioning protrusions 3141 along the axial direction of the heat-conducting cylinder can be rectangular, circular, or triangular.

[0068] Since the cover 313 is arranged between the positioning ring 314 and the heat-conducting cylinder, the external air also needs to pass through the cover 313. The inner wall of the cover 313 is arranged in a variable diameter manner, i.e., the inner diameter of the cover 313 gradually decreases along the direction close to the heat-conducting cylinder 32. The small-diameter end cooperates with the supporting protrusion 3112 to achieve clamping and fixing of the heat-conducting cylinder. The inner cavity from the large-diameter end to the small-diameter end can also form a space for circulation of external air, so that the external air enters the heating cavity 35 through the gaps between the plurality of positioning protrusions 3141 and the space for circulation of air in the cover 313 in sequence.

[0069] The above application uses specific examples to illustrate the present application, which is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations, or substitutions can be made.

Claims

1. A heating device, characterized in that, The application relates to a heating device for an aerosol generating article. The heating device comprises: a device body, wherein an accommodation opening is arranged on the device body; a heat-conducting cylinder, which is suspended in the device body; a heating assembly, which is arranged at one end of the heat-conducting cylinder away from the accommodation opening and forms a heating cavity together with the heat-conducting cylinder, wherein the heating cavity is in communication with the accommodation opening, and the accommodation opening is used for inserting and accommodating the aerosol generating article in the heating cavity; and an insert, which is arranged on one side of the heating assembly facing the accommodation opening, and is used for being inserted into the aerosol generating article accommodated in the heating cavity.

2. The heating device of claim 1, wherein The inner wall of the heat-conducting cylinder and / or the side of the heating assembly facing the accommodation opening is provided with a limiting protrusion, which is used for supporting the aerosol generating article to form an airflow space between the end of the aerosol generating article and the heating assembly, and the airflow space is in communication with the outside through the heating cavity and the accommodation opening in sequence.

3. The heating device of claim 1, wherein, The heating assembly comprises a heating coil and an inductor, the inductor and the heat-conducting cylinder form the heating cavity, the heating coil is arranged on one side of the inductor away from the accommodation opening, and the heating coil is used for generating an alternating magnetic field in an alternating current to make the inductor inductively heat.

4. The heating device of claim 3, wherein The heating assembly comprises a heating body and a heat-conducting body, the heat-conducting body and the heat-conducting cylinder form the heating cavity, and the heating body is arranged on the heat-conducting body and is used for heating by electrification.

5. The heating device according to any one of claims 1-4, characterized in that, The heating body comprises a heating line, a heating wire or a heating film.

6. The heating device of claim 1, wherein, The heat-conducting cylinder is made of infrared heat-conducting material.

7. The heating device of claim 6, wherein The inner wall of the heat-conducting cylinder is provided with a plurality of airflow grooves, and the two ends of the airflow grooves are in communication with the accommodation opening and the airflow space respectively.

8. The heating device of claim 1, wherein, The limiting protrusions are provided in plurality, the limiting protrusions are arranged in the axial direction of the heat-conducting cylinder and are uniformly spaced in the circumferential direction of the heat-conducting cylinder or the heating assembly, an air inlet gap is formed between two adjacent limiting protrusions, and the airflow grooves are in communication with the airflow space through the airflow channel.

9. The heating device of claim 1, wherein, The inner wall of the heat-conducting cylinder is provided with an anti-sticking coating.

10. An aerosol-generating device comprising, The device body comprises a supporting shell, a base and a cover, the accommodation opening is formed on the supporting shell, the cover is inserted into the supporting shell from the accommodation opening, the inner part of the supporting shell is provided with a supporting protrusion, the opening end of the heat-conducting cylinder close to the accommodation opening is provided with a flange, the flange is arranged on the outer wall of the heat-conducting cylinder in the direction away from the heating cavity, the flange is clamped between the supporting protrusion and the cover, so that the heat-conducting cylinder is coaxially suspended in the supporting shell, and the base is arranged on one side of the supporting shell away from the accommodation opening, used for sealing the supporting shell, and the base is spaced from the heating assembly. The application further relates to a heating device, which comprises a shell assembly, a power supply assembly and a heating device as claimed in any one of claims 1-9, the power supply assembly and the heating device are arranged in the shell assembly, and the power supply assembly and the heating device are electrically connected.

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