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 supporting main body, a heat conduction cylinder and a heating piece, the heating piece can be electrified to heat, and the heating piece can be inserted into an aerosol generation product so that the aerosol generation product can be heated. The heating element can directly heat the aerosol generating product from the middle, the heating element is arranged on the bottom wall of the heat conduction barrel, the heat conduction barrel can serve as a heat transfer medium, heat is transferred to the aerosol generating product from the periphery, and the air inlet channel is formed in the heating cavity and communicated with the containing opening, so that the heat transfer efficiency is improved. External air can enter the air inlet channel to be heated by heat transferred to the heat conduction cylinder to form hot air flow, the combination of surrounding heating, middle heating and hot air flow heating is adopted, the heating area can be increased, the aerosol generation speed can be increased, an aerosol generation product can be fully heated in an all-around mode, and the taste of aerosol 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 an 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 central heating and surrounding heating. Although the central heating method can quickly form an 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 an 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 an aerosol and fully heat the aerosol generation article to improve the user experience.

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

[0005] A support body is provided with a mounting cavity in the support body, and one end of the mounting cavity is provided with a containing opening;

[0006] A heat-conducting cylinder is suspended in the mounting cavity, the heat-conducting cylinder comprises a side wall and a bottom wall, the side wall and the bottom wall form a heating cavity, the heating cavity is in communication with the containing opening, and the containing opening is used for inserting an aerosol generation article into the heating cavity; an air inlet channel is formed in the heating cavity, and the air inlet channel is in communication with the containing opening; and

[0007] A heating element is arranged on one side of the bottom wall facing the containing opening, and the heating element is used for inserting into the inside of the aerosol generation article; the heating element is used for electric heating.

[0008] In some embodiments, the heating element comprises a heating shell and a heating wire, the heating shell is arranged in the middle part of the bottom wall, the heating shell is provided with a containing cavity with one end open and one end closed, the heating wire is installed in the containing cavity, and the heating wire is electrically connected with a power supply host.

[0009] In some embodiments, the bottom wall is provided with a mounting hole, and the heating element is arranged on one side of the bottom wall facing the containing opening through the mounting hole.

[0010] In some embodiments, the heat-generating member includes a heat-generating portion, an electrically-conductive portion, a first lead wire, and a second lead wire, the heat-generating portion is disposed at a middle portion of the bottom wall, the heat-generating portion is a hollow structure with one end closed and one end open, the electrically-conductive portion is disposed at the open end of the heat-generating portion, one end of the first lead wire is inserted into the heat-generating portion and electrically connected to the closed end of the heat-generating portion, one end of the second lead wire is electrically connected to the electrically-conductive portion, and the other ends of the first lead wire and the second lead wire are electrically connected to a power supply host.

[0011] In some embodiments, the electrically-conductive portion has an area of a projection in an axial direction of the heat-conducting cylinder that is greater than or equal to an area of a projection in the axial direction of the heat-conducting cylinder of the open end of the heat-generating portion.

[0012] In some embodiments, the electrically-conductive portion has an area of a projection in an axial direction of the heat-conducting cylinder that is greater than or equal to an area of a projection in the axial direction of the heat-conducting cylinder of the open end of the heat-generating portion.

[0013] In some embodiments, the air inlet channel includes a first air inlet channel and a second air inlet channel that are in communication with each other.

[0014] The inner wall of the side wall is provided with a plurality of protruding portions that extend inwardly in a radial direction of the heat-conducting cylinder, the plurality of protruding portions are uniformly and spacedly arranged in a circumferential direction of the heat-conducting cylinder, and the first air inlet channel is formed between two adjacent protruding portions.

[0015] The side wall or the bottom wall is provided with a support protrusion that is used to abut against an end portion of the aerosol-generating article to form the second air inlet channel between the end portion of the aerosol-generating article and the bottom wall.

[0016] In some embodiments, the support protrusion is provided in a plurality, the plurality of support protrusions are uniformly and spacedly arranged in a circumferential direction of the heat-conducting cylinder, a third air inlet channel is formed between two adjacent support protrusions, and the first air inlet channel communicates with the second air inlet channel through the third air inlet channel.

[0017] In some embodiments, the support body includes a positioning member, a clamping member, a support shell, and a base, the positioning member, the clamping member, the support shell, and the base are coaxially arranged in sequence in an axial direction of the support shell, the clamping member and the base are respectively inserted into the support shell from two ends of the support shell in the axial direction thereof, the receiving opening is formed at the positioning member, the heat-conducting cylinder is coaxially arranged with the support shell and is spacedly arranged with the base.

[0018] The inner wall of the support shell is provided with an inner protrusion extending radially inwardly of the support shell, and the outer wall of the heat-conducting cylinder is provided with an outer protrusion extending radially outwardly of the support shell, the outer protrusion being arranged between the inner protrusion and the clamping member.

[0019] 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.

[0020] According to the heating device in the above embodiment, the heating device comprises a support body, a heat-conducting cylinder and a heating element, the heating element being capable of generating heat by being electrified, the heating element being capable of being inserted into the aerosol generating article and directly heating the aerosol generating article from the middle part, the heating element being arranged on the bottom wall of the heat-conducting cylinder, the heat-conducting cylinder being capable of transferring heat from the surroundings to the aerosol generating article, the air from the outside being capable of entering the air inlet channel and being heated by the heat transferred to the heat-conducting cylinder to form a hot air flow, the combination of the three heating methods of surrounding heating, middle heating and hot air flow heating being capable of increasing the heating area, accelerating the speed of generating aerosol, and fully heating the aerosol generating article in all directions to improve the taste of the aerosol. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural sectional view of the aerosol generating device in use in an embodiment;

[0022] Figure 2 It is a structural sectional view of the heating device in an embodiment;

[0023] Figure 3 It is an installation schematic view of the heat-conducting cylinder and the heating element in an embodiment;

[0024] Figure 4 It is a structural sectional view of the heating device in another embodiment;

[0025] Figure 5 It is an installation schematic view of the heat-conducting cylinder and the heating element in another embodiment;

[0026] Figure 6 It is a three-dimensional structural schematic view of the heat-conducting cylinder and the heating element in another embodiment;

[0027] Figure 7 It is an air flow circulation schematic view of the heating device in an embodiment;

[0028] Figure 8 It is an exploded view of the heating device in an embodiment.

[0029] Wherein: 1, housing assembly; 11, mounting space; 2, power supply assembly; 21, battery; 22, control circuit board; 3, heating device; 31, support body; 311, mounting cavity; 3111, containing opening; 312, positioning piece; 3121, positioning protrusion; 3122, air inlet gap; 313, clamping piece; 3131, air flow space; 314, support shell; 3141, inner convex part; 315, base; 32, heat-conducting cylinder; 321, side wall; 322, bottom wall; 3221, mounting hole; 323, heating cavity; 324, air inlet channel; 3241, first air inlet channel; 3242, second air inlet channel; 3243, third air inlet channel; 325, protruding part; 326, support protrusion; 327, outer convex part; 33, heating element; 331, heating shell; 3311, containing cavity; 332, heating wire; 333, heating part; 334, conductive part; 335, first lead wire; 336, second lead wire; 337, tip part; 338, base part; A, aerosol generating article; X, axis. DETAILED DESCRIPTION

[0030] The application will be described in further detail below with reference to the drawings. Like elements in different embodiments are denoted by like reference numerals. In the following embodiments, many specific details are described in order to provide a thorough understanding of the application. However, it will be apparent to one skilled in the art that some features, which are not necessarily the most important to an adequate description of the application, can well be omitted or substituted for by other handlings, materials, methods, etc. In some cases, some of the operations described in the specification are not required in order to practice the application, and indeed the core of the application can be practiced without some or all of these operations, and without one or more of the advantages discussed in the specification.

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

[0032] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and have no any order or technical meaning. And 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 an aerosol-generating article A by using the principle of heating without combustion, so as to generate aerosol for a user to use.

[0034] It should be noted that the term aerosol refers to a dispersion of solid or liquid particles in a gas. As used herein, "aerosol" can be used to refer generally 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 facilitates 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 polybasic 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 substrate material. The homogenized plant substrate 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 in a soft paper material or a hard material, and the appearance of the aerosol-generating article A is generally cylindrical in structure.

[0037] Please refer to Figure 1 The device includes a housing assembly 1, a power supply assembly 2, and a heating device 3. The housing assembly 1 can be assembled from one or more components for accommodating the power supply assembly 2 and the heating device 3. The housing assembly 1 has an installation space 11 inside, and the power supply assembly 2 and the heating device 3 are arranged in the installation space 11. The arrangement of the housing 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 includes a battery 21, a control circuit board 22, control buttons (not shown in the figure), and the like. The arrangement of 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 to heat the aerosol-generating article A to form an aerosol.

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

[0039] Please refer to Figures 2 to 8 The heating device 33 includes a support body 31, a heat-conducting cylinder 32, and a heating element 33. The support body 31 is internally provided with a mounting cavity 311, one end of the mounting cavity 311 is provided with a containing opening 3111, the heat-conducting cylinder 32 is suspended in the mounting cavity 311, the heat-conducting cylinder 32 includes a side wall 321 and a bottom wall 322, the side wall 321 and the bottom wall 322 are closed to form a heating cavity 323, the heating cavity 323 is in communication with the containing opening 3111, the containing opening 3111 is used for inserting the aerosol generating article A into the heating cavity 323, an air inlet passage 324 is formed in the heating cavity 323, the air inlet passage 324 is in communication with the containing opening 3111, the heating element 33 is arranged on the side of the bottom wall 322 facing the containing opening 3111, the heating element 33 is used for being inserted into the inside of the aerosol generating article A, and the heating element 33 is used for being powered to heat.

[0040] The containing opening 3111 is arranged on the support body 31, which can be used as an opening for mounting the heat-conducting cylinder 32 in the support body 31, as an insertion opening for inserting the aerosol generating article A, and as an air inlet for communicating with the external environment.

[0041] The heating element 33 can be powered to heat as a heating source. Since it can be inserted into the aerosol generating article A, the heating element 33 can directly heat the aerosol generating article A from the middle. Since the heating element 33 is arranged on the bottom wall 322 of the heat-conducting cylinder 32, the heat-conducting cylinder 32 can act as a medium for heat transfer to transfer heat from the surroundings to the aerosol generating article A. Since the air inlet passage 324 is formed in the heating cavity 323 and is in communication with the containing opening 3111, the external air can enter the air inlet passage 324 and be heated by the heat transferred to the heat-conducting cylinder 32 to form a hot air flow. By combining the three heating methods of surrounding heating, middle heating, and hot air flow heating, the heating area can be increased, the speed of generating aerosol can be accelerated, the aerosol generating article A can be heated in all directions and fully, and the taste of the aerosol can be improved.

[0042] The heat-conducting cylinder 32 is made of high-thermal-conductivity materials, such as aluminum alloy, copper, and ceramic materials, including aluminum nitride and aluminum oxide.

[0043] Please refer to Figure 3In some embodiments, the heating element 33 comprises a heating shell 331 and a heating wire 332. The heating shell 331 is arranged at the middle of the bottom wall 322, and the heating shell 331 is internally provided with a receiving cavity 3311 with one open end and one closed end. The heating wire 332 is arranged in the receiving cavity 3311, and the heating wire 332 is electrically connected to the power supply host. Since the heating shell 331 is arranged at the middle of the bottom wall 322, the aerosol generating article A can be heated from the center, so that it can be uniformly heated in the radial direction of the aerosol generating article A. The closed end of the heating shell 331 is inserted into the aerosol generating article A, and the open end is used for loading the heating wire 332. The heating wire 332 is made of a conductive metal material, such as iron-nickel alloy and titanium metal material, which can directly generate heat as a heat source after being electrified. The heating shell 331 is made of a high thermal conductivity material, such as aluminum alloy, copper, and ceramic material, including aluminum nitride and aluminum oxide.

[0044] In some specific embodiments, the heating shell 331 and the heat conduction cylinder 32 can be integrally formed, and are made of the same material, which can improve the sealing performance of the entire device to ensure normal smoking of the user.

[0045] In some specific embodiments, the heating shell 331 and the heat conduction cylinder 32 are in a split structure. The bottom wall 322 of the heat conduction cylinder 32 is provided with a mounting hole 3221. The heating element 33 is arranged on the side of the bottom wall 322 facing the air inlet through the mounting hole 3221. Meanwhile, the open end of the heating shell 331 is arranged on the side of the bottom wall 322 away from the air inlet, so that the heat conduction cylinder 32 and the heating element 33 are sealingly connected. The open end facilitates the installation and removal of the heating wire 332, and the electrical connection with the power supply assembly 2 without passing through the inside of the heating cavity 323.

[0046] In order to facilitate the fixation of the heating wire 332, the inside of the heating shell 331 is filled with ceramic glue, which can directly fix the heating wire 332 to the inner wall of the heating shell 331, and can shorten the heat transfer path and improve the heat utilization efficiency.

[0047] Please refer to Figures 4 to 6 In some embodiments, the heating element 33 comprises a heating shell 331 and a heating wire 332. The heating shell 331 is arranged at the middle of the bottom wall 322, and the heating shell 331 is internally provided with a receiving cavity 3311 with one open end and one closed end. The heating wire 332 is arranged in the receiving cavity 3311, and the heating wire 332 is electrically connected to the power supply host. Since the heating shell 331 is arranged at the middle of the bottom wall 322, the aerosol generating article A can be heated from the center, so that it can be uniformly heated in the radial direction of the aerosol generating article A. The closed end of the heating shell 331 is inserted into the aerosol generating article A, and the open end is used for loading the heating wire 332. The heating wire 332 is made of a conductive metal material, such as iron-nickel alloy and titanium metal material, which can directly generate heat as a heat source after being electrified. The heating shell 331 is made of a high thermal conductivity material, such as aluminum alloy, copper, and ceramic material, including aluminum nitride and aluminum oxide.

[0048] Based on the principle of the shortest path of current, by setting the conductive part 334 at the opening end of the heating part 333, the conductive part 334 is connected with the second lead wire 336, and the closed end is connected with the first lead wire 335, so that the current can uniformly pass through the entire heating part 333, thereby making the heating part 333 heat uniformly, thereby being able to uniformly heat the aerosol generating article A, and also being able to improve the heating efficiency of the heating part 333. The conductive part 334 is formed by coating with conductive paste, for example, coated with silver paste on the end face of the opening end of the heating part 333, and the thickness of the conductive part 334 is about 1-3 mm. Since the aerosol generating article A is generally cylindrical, the heating part 333 inserted therein is also generally cylindrical, and the opening end thereof is a circular ring structure. In order to adapt to this structure, the cross section (cross section along the axial direction of the heating part 333) of the conductive part 334 is also a circular ring shape, and the circular ring design can also avoid short circuit caused by contact between the conductive part 334 and the first lead wire 335.

[0049] In order to avoid the occurrence of short circuit in the heating element 33, except for the part of the first lead wire 335 connected with the closed end, the other part is insulated from other components by coating with insulating material, and similarly, except for the part of the second lead wire 336 connected with the conductive part 334, the other part is insulated from other components by coating with insulating material. In this example, the conductive part 334 can completely block the opening end of the heating part 333.

[0050] The heating part 333 is made of a metal ceramic material and can directly heat after being powered on, without the need to set a heating coating or a heating circuit, which is different from the scheme of setting a heating coating or a heating circuit, and the heating is more uniform and consistent.

[0051] In order to avoid the second lead wire 336 from contacting the heating part 333 and causing short circuit, affecting the heating efficiency of the heating part 333, the area of the orthogonal projection of the conductive part 334 in the axial direction (the direction of the axis X) of the heat conducting cylinder 32 is greater than or equal to the area of the orthogonal projection of the opening end of the heating part 333 in the axial direction (the direction of the axis X) of the heat conducting cylinder 32.

[0052] In order to adapt to the needs of different positions and different heating temperatures, the first lead wire 335 and the second lead wire 336 can be provided with multiple ones, and at least part of the structure of the heating part 333 is made of a metal ceramic to form multiple heating zones on the heating part 333, each heating zone can cooperate with the first lead wire 335 and the second lead wire 336 to form an independent heating circuit, thereby being able to realize independent heating of each heating zone or synchronous work of multiple heating zones.

[0053] In a specific embodiment, the orthographic projection of the conductive part 334 in the axial direction (the direction of the axis X) of the heat conduction cylinder 32 completely coincides with the orthographic projection of the heat generating part 333 in the axial direction (the direction of the axis X) of the heat conduction cylinder 32, which saves the coating cost and time of the conductive paste while ensuring the heat generating efficiency of the heat generating part 333.

[0054] Please refer to Figure 3 In some embodiments, the air inlet channel 324 includes a first air inlet channel 3241 and a second air inlet channel 3242 that are in communication with each other; the inner wall of the side wall 321 is provided with a plurality of protrusions 325 that extend inwardly in the radial direction (perpendicular to the axis X) of the heat conduction cylinder 32, and the plurality of protrusions 325 are uniformly and spacedly arranged along the circumferential direction of the heat conduction cylinder 32, and the first air inlet channel 3241 is formed between any two adjacent protrusions 325, and the side wall 321 or the bottom wall 322 is provided with a support protrusion 326 that is used to abut against the end of the aerosol generating article A to form the second air inlet channel 3242 between the end of the aerosol generating article A and the bottom wall 322. After the external air enters through the accommodation opening 3111, it flows along the first air inlet channel 3241 and is heated to become a hot air flow. The arrangement of the first air inlet channel 3241 not only guides the air, but also provides a heat exchange path for the air to be heated to form a hot air flow. After the hot air flow enters the second air inlet channel 3242, it enters the inside of the aerosol generating article A for heating. The arrangement of the second air inlet channel 3242 not only guides the hot air flow, but also buffers it to ensure the continuous generation of aerosol.

[0055] In some specific embodiments, the protrusions 325 are strip-shaped protrusions that extend in the axial direction (the direction of the axis X) of the heat conduction cylinder 32, and the protrusions 325 are uniformly arranged to form a plurality of uniformly arranged first air inlet channels 3241 that extend in the axial direction (the direction of the axis X) of the heat conduction cylinder 32 between any two protrusions 325. This can reduce the resistance of air and hot air flow, and also reduce the suction resistance of the user, and the uniformly arranged first air inlet channels 3241 can also achieve uniform heating of the aerosol generating article A.

[0056] In other specific embodiments, the protrusions 325 can also be point-shaped or block-shaped protrusions 325, and the protrusions 325 can be spherical, conical, cylindrical or cubic structures. The protrusions 325 are uniformly arranged along the circumferential direction and the axial direction (the direction of the axis X) of the heat conduction cylinder 32 to form uniform first air inlet channels 3241, thereby achieving uniform heating of the aerosol generating article A.

[0057] In some specific embodiments, the support protrusions 326 are provided in plurality, and the plurality of support protrusions 326 are uniformly and spacedly arranged along the circumference of the heat conduction cylinder 32, and a third air inlet passage 3243 is formed between two adjacent support protrusions 326, and the first air inlet passage 3241 communicates with the second air inlet passage 3242 through the third air inlet passage 3243.

[0058] Please refer to Figure 7 and Figure 8 In some embodiments, the support body 31 comprises a positioning member 312, a clamping member 313, a support shell 314 and a base 315, the positioning member 312, the clamping member 313, the support shell 314 and the base 315 are coaxially arranged along the axial direction (the direction of the axis X) of the support shell 314 in sequence, and the clamping member 313 and the base 315 are respectively inserted into the support shell 314 along the axial direction (the direction of the axis X) from both ends of the support shell 314, the heat conduction cylinder 32 is coaxially arranged with the support shell 314 and is spacedly arranged with the base 315, and the spaced arrangement of the heat conduction cylinder 32 and the base 315 can avoid heat loss through the base 315, the inner wall of the support shell 314 is provided with an inner protrusion 3141 extending inwardly along the radial direction of the support shell 314, and the outer wall of the heat conduction cylinder 32 is provided with an outer protrusion 327 extending outwardly along the radial direction of the support shell 314, the outer protrusion 327 is arranged between the inner protrusion 3141 and the clamping member 313, thereby achieving the suspension of the heat conduction cylinder 32, reducing the contact area of the heat conduction cylinder 32 with other structures, reducing the heat loss of the entire device, and improving the heat utilization rate.

[0059] It should be noted that the above-mentioned inward and outward, inward refers to the direction towards the center, and outward refers to the direction away from the center, since the heat conduction cylinder 32 and the support shell 314 are coaxially arranged in the present application, the support shell 314 is arranged outside the heat conduction cylinder 32, and the centers of the heat conduction cylinder 32 and the support shell 314 are consistent, which means that the coaxial axes of the two are consistent.

[0060] In some embodiments, the inner wall of the positioning member 312 is provided with a plurality of positioning protrusions 3121, which can abut against the outer wall of the aerosol generating article A to further position it, so that the aerosol generating article A is coaxially arranged with the heating cavity 323, and the plurality of positioning protrusions 3121 are spacedly arranged to form an air inlet gap 3122 between two adjacent positioning protrusions 3121, and the air inlet gap 3122 and the accommodation opening 3111 are in communication. The positioning protrusions 3121 can also be in the form of a strip or a dot, and when the positioning protrusions 3121 are in the form of a dot, their cross section along the axial direction (the direction of the axis X) of the heat conduction cylinder 32 can be rectangular, circular or triangular.

[0061] Since the clamping piece 313 is arranged between the positioning piece 312 and the heat-conducting cylinder 32, the external air also needs to pass through the clamping piece 313. The inner wall of the clamping piece 313 is designed to be tapered, that is, the diameter of the inner wall of the clamping piece 313 gradually decreases along the direction close to the heat-conducting cylinder 32. The small-diameter end cooperates with the external protrusion to achieve clamping and fixing of the heat-conducting cylinder 32. The inner cavity from the large-diameter end to the small-diameter end can also form an airflow space 3131 connected with the air inlet gap 3122, so that the external air flows into the inside of the aerosol generating article A in sequence through the accommodating opening 3111, the air inlet gap 3122, the airflow space 3131, the first air inlet channel 3241, the third air inlet channel 3243 and the second air inlet channel 3242.

[0062] In order to further facilitate the insertion of the heating element 33 into the inside of the aerosol generating article A, the heating element 33 includes an integrally formed sharp end 337 and a base body 338. One end of the base body 338 is arranged at the middle part of the bottom wall 322 of the heat-conducting cylinder 32, and the other end is connected with the sharp end 337. The sharp end 337 is used to pierce the aerosol generating article A, so that at least part of the base body 338 is inserted into the inside of the center of the aerosol generating article A, to ensure that the aerosol generating article A is coaxially installed with the heating cavity 323, so that the aerosol generating article A is uniformly heated. Of course, the sharp end 337 and the base body 338 can also be a detachable split structure.

[0063] In some specific embodiments, the heating element 33 can be configured as a needle-shaped structure, a rod-shaped structure or a sheet-shaped structure with a closed end and an open end inside hollow. The needle-shaped structure, the rod-shaped structure and the sheet-shaped structure are all provided with the sharp end 337 at one end.

[0064] Since there is a possibility that the inner wall of the heat-conducting cylinder 32 contacts the aerosol generating article A, the inner wall of the heat-conducting cylinder 32 is provided with an anti-adhesion coating (not shown in the figure), that is, the side wall 321 is provided with the anti-adhesion coating on the inside and the support protrusion 326 abutting against the end part of the aerosol generating article A, which can reduce the adhesion of the aerosol generating article A on the heat-conducting cylinder 32. The anti-adhesion coating is a dense coating structure formed by spraying a nano material or a ceramic material.

[0065] In order to improve the heating efficiency of the heating device 3 and reduce heat loss, the support shell 314 has good heat preservation and insulation effect and is made of a material with low thermal conductivity. At the same time, since the space enclosed by the base 315 and the support shell 314 has a high temperature, the base 315 and the support shell 314 are made of a high-temperature-resistant material, such as the base 315 made of a high-temperature-resistant PEEK material.

[0066] 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, include: A support body, wherein the support body has a mounting cavity, and one end of the mounting cavity has an accommodating opening; A heat-conducting cylinder is suspended in the mounting cavity. The heat-conducting cylinder includes a side wall and a bottom wall, which together form a heating cavity. The heating cavity is connected to the receiving opening, which is used to allow the aerosol-generated product to be inserted into the heating cavity. An air intake channel is formed inside the heating chamber, and the air intake channel is connected to the accommodating opening; as well as A heating element is disposed on the side of the bottom wall facing the receiving opening, and the heating element is used to be inserted into the interior of the aerosol generating article; The heating element is used to generate heat when electricity is applied.

2. The heating device according to claim 1, characterized in that, The heating element includes a heating shell and a heating wire. The heating shell is located in the middle of the bottom wall. The heating shell has a receiving cavity with one end open and the other end closed. The heating wire is installed in the receiving cavity and is electrically connected to the power supply host.

3. The heating device according to claim 2, characterized in that, The bottom wall is provided with a mounting hole, and the heating element passes through the mounting hole and is disposed on the side of the bottom wall facing the receiving opening.

4. The heating device according to claim 1, characterized in that, The heating element includes a heating part, a conductive part, a first lead, and a second lead. The heating part is disposed in the middle of the bottom wall and is a hollow structure with one end closed and the other end open. The conductive part is disposed at the open end of the heating part. One end of the first lead passes through the interior of the heating part and is electrically connected to the closed end of the heating part. One end of the second lead is electrically connected to the conductive part. The other ends of the first lead and the second lead are both electrically connected to the power supply host.

5. The heating device according to claim 4, characterized in that, The positive projection area of ​​the conductive part on the axial direction of the heat-conducting cylinder is greater than or equal to the positive projection area of ​​the opening end of the heating part on the axial direction of the heat-conducting cylinder.

6. The heating device according to claim 5, characterized in that, The orthographic projection of the conductive part on the axial direction of the heat-conducting cylinder completely coincides with the orthographic projection of the opening end of the heating part on the axial direction of the heat-conducting cylinder.

7. The heating device according to any one of claims 1-6, characterized in that, The air intake channel includes a first air intake channel and a second air intake channel that are interconnected. The inner wall of the sidewall is provided with a plurality of protrusions, which extend inward along the radial direction of the heat-conducting cylinder. The plurality of protrusions are evenly and spaced apart along the circumference of the heat-conducting cylinder, and the first air intake channel is formed between two adjacent protrusions. The sidewall or the bottom wall is provided with a support protrusion, which is used to abut against the end of the aerosol generating article to form a second air intake channel between the end of the aerosol generating article and the bottom wall.

8. The heating device according to claim 7, characterized in that, The support protrusions are provided in multiple ways, and the multiple support protrusions are evenly and spaced apart along the circumference of the heat-conducting cylinder. A third air intake channel is formed between two adjacent support protrusions, and the first air intake channel is connected to the second air intake channel through the third air intake channel.

9. The heating device according to claim 1, characterized in that, The support body includes a positioning element, a clamping element, a support shell, and a base. The positioning element, clamping element, support shell, and base are arranged coaxially along the axial direction of the support shell. The clamping element and the base are respectively inserted into the support shell from both ends along its axial direction. The accommodating opening is formed at the positioning element. The heat-conducting cylinder is arranged coaxially with the support shell and spaced apart from the base. The inner wall of the support housing is provided with an inner protrusion that extends inward along the radial direction of the support housing. The outer wall of the heat-conducting cylinder is provided with an outer protrusion that extends outward along the radial direction of the support housing. The outer protrusion is positioned between the inner protrusion and the clamping member.

10. An aerosol generating device, characterized in that, It includes a housing assembly, a power supply assembly, and a heating device as claimed in any one of claims 1-9, wherein the power supply assembly and the heating device are disposed within the housing assembly and are electrically connected.

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