Heating device and heating non-combustion equipment

Abstract

The utility model relates to the technical field of heating atomization, in particular to a heating device and heating non-combustion equipment. The heating device comprises a supporting assembly and a heating assembly, a containing opening is formed in the supporting assembly, the heating assembly is arranged in the supporting assembly in a suspended mode, the heating assembly comprises a heating piece and a heat conduction piece, the heating piece comprises a side wall and a bottom wall, the side wall and the bottom wall form a heating cavity with one open end and the other closed end, and the heating cavity is communicated with the containing opening. The heat conduction piece is arranged on the side face, facing the containing opening, of the bottom wall, the heat conduction piece can be inserted into the aerosol generating product, and due to the arrangement of the heating piece and the heat conduction piece, the heating area can be increased, the aerosol generating speed can be increased, and the aerosol generating effect can be improved. And the heating piece heats from the periphery, and the heat conducting piece heats from the middle, so that the aerosol generating product can be fully heated, the use taste of a user is improved, and the use feeling of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heating atomization, and more particularly to a heating device and a heat-not-burn device. BACKGROUND

[0002] The heat-not-burn device includes a heating device for heating an aerosol generating article, which utilizes the heat-not-burn principle to make the aerosol generating article generate aerosol for a user to use. Some existing heating devices adopt a center heating method and a surrounding heating method. The center heating method can quickly form aerosol, but the heating area is small and the energy is concentrated, which can easily burn the aerosol generating article. The surrounding heating method can increase the heating area, but the speed of forming aerosol is slow. The aerosol generating article at the periphery of the contact part with the heat source is heated, while the aerosol generating article in the middle far from the heat source is not heated enough, resulting in insufficient release, which affects the full use of the aerosol generating article and causes poor user experience. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heating device and a heat-not-burn device, which can increase the heating area, quickly form aerosol, and fully heat the aerosol generating article to improve the user experience.

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

[0005] a support assembly, the support assembly being provided with a containing opening; and

[0006] a heating assembly, the heating assembly being suspended in the interior of the support assembly, the heating assembly including a heating element and a heat-conducting element, the heating element including a side wall and a bottom wall, the side wall and the bottom wall forming a heating cavity with one end open and the other end closed, the heating cavity being in communication with the containing opening, the containing opening being used for inserting and containing the aerosol generating article in the heating cavity; the heat-conducting element being arranged on the side of the bottom wall facing the containing opening, the heat-conducting element being used for being inserted into the interior of the aerosol generating article, the heating element being used for heating by electricity and directly transmitting heat to the aerosol generating article or transmitting heat to the aerosol generating article through the heat-conducting element to heat the aerosol generating article to form aerosol.

[0007] In some embodiments, a limiting protrusion is arranged on the side wall and / or the bottom wall, the limiting protrusion being used for supporting the aerosol generating article to form an airflow space between the end of the aerosol generating article and the bottom wall.

[0008] In some embodiments, the inner wall of the side wall is provided with a plurality of protrusions for abutting against the outer wall of the aerosol generating article, and an air inlet channel is formed between two adjacent protrusions, and the two ends of the air inlet channel communicate with the accommodation opening and the airflow space, respectively.

[0009] In some embodiments, a plurality of limiting protrusions are provided, and each limiting protrusion extends along the axis of the heating element and is spaced apart along the circumference of the heating element, and an airflow gap is formed between two adjacent limiting protrusions, and the air inlet channel communicates with the airflow space through the airflow gap.

[0010] In some embodiments, the heating element is made of conductive ceramic, and the outer periphery of the heating element is provided with a positive conductive portion and a negative conductive portion electrically connected to the power supply assembly.

[0011] In some embodiments, the heating element includes a heating base and at least one heating zone provided on the outer wall of the heating base, and the outer periphery of the heating element is provided with a positive conductive portion and a negative conductive portion electrically connected to the power supply assembly, and the positive conductive portion and the negative conductive portion are electrically connected to the heating zone, respectively.

[0012] In some embodiments, the heat conducting element includes a tip portion and a base portion, one end of the base portion is provided at the middle of the bottom wall, and the other end is connected to the tip portion, the tip portion is used to pierce the aerosol generating article, and at least part of the base portion is inserted into the inside of the aerosol generating article.

[0013] In some embodiments, the inner wall of the heating element is provided with an anti-sticking coating.

[0014] In some embodiments, the support assembly includes a support shell, a base, and a gland, the accommodation opening is formed on the support shell, and the gland is inserted into the support shell from the accommodation opening; the inside of the support shell is provided with a support protrusion, the open end of the heating element is provided with a flange, the flange is protrudingly arranged on the outer wall of the heating element in a direction away from the heating cavity, the flange is lapped on the support protrusion, the gland is arranged on the side of the flange facing the accommodation opening, so that the heating element is suspended in the support shell and coaxially arranged with the support shell, the base is arranged on the side of the support shell away from the accommodation opening, for sealing the support shell, and the base is spaced apart from the heating element.

[0015] The application also provides a heating non-combustion device, which includes a main shell, a power supply assembly, and a heating device as described above, the power supply assembly and the heating device are arranged in the main shell, and the power supply assembly and the heating device are electrically connected.

[0016] According to the heating device in the above embodiment, the heating device comprises a supporting assembly and a heating assembly, the supporting assembly is provided with a containing opening, the heating assembly is suspended in the inside of the supporting assembly, the heating assembly comprises a heating element and a heat-conducting element, the heating element comprises a side wall and a bottom wall, the side wall and the bottom wall form a heating cavity which is open at one end and closed at the other end, the heating cavity is communicated with the containing opening, the containing opening is used for inserting and containing the aerosol generating article in the heating cavity, the heat-conducting element is arranged on the side of the bottom wall facing the containing opening, the heat-conducting element can be inserted into the inside of the aerosol generating article, the heating element can generate heat after being electrified as a heat source, because the side wall and the bottom wall of the heating element form the heating cavity, the heating element is arranged around the aerosol generating article, heat is directly transmitted to the aerosol generating article to form an aerosol by surrounding heating, because the heat-conducting element is arranged on the bottom wall of the heating element and conducts heat by contact with the heating element, heat is transmitted to the aerosol generating article to form an aerosol by the heat-conducting element, because the heat-conducting element can be inserted into the aerosol generating article, central heating can be adopted, the application combines central heating and surrounding heating to increase the heating area, accelerate the speed of generating an aerosol, and make the aerosol generating article be heated sufficiently, improve the user's use taste, and thus improve the user's use experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural section view of a heating non-combustion device in an embodiment;

[0018] Figure 2 It is a structural section view of a heating non-combustion device in an embodiment;

[0019] Figure 3 It is a structural section view of a heating device in an embodiment;

[0020] Figure 4 It is an exploded view of a heating device in an embodiment;

[0021] Figure 5 It is a structural section view of a heating assembly in an embodiment;

[0022] Figure 6 It is a structural view of a heating assembly in another embodiment;

[0023] Figure 7 It is a structural view of a heat-conducting element in an embodiment.

[0024] Wherein: 1, main shell; 11, mounting space; 2, power supply assembly; 21, battery; 22, control circuit board; 3, heating device; 31, support assembly; 311, support shell; 3111, containing opening; 3112, support protrusion; 312, base; 313, gland; 314, positioning ring; 3141, positioning protrusion; 32, heating assembly; 321, heating element; 3211, side wall; 3212, bottom wall; 3213, heating cavity; 3214, heating base; 3215, heating area; 3216, flange; 322, heat-conducting element; 3221, tip portion; 3222, base portion; 3223, sheet body; 323, electrode portion; 3231, positive electrode conductive portion; 3232, negative electrode conductive portion; 324, limiting protrusion; 325, airflow space; 326, airflow gap; 327, protrusion portion; 328, air inlet channel; A, aerosol generating article. DETAILED DESCRIPTION

[0025] The application will be further described in details through specific embodiments combined with the drawings. In different embodiments, similar elements are marked with similar element reference numbers. In the following embodiments, many details are described in order to make the application better understood. However, those 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 part of the application being overwhelmed by too much description, and it is not necessary for those skilled in the art to describe these related operations in detail according to the description in the specification and the general technical knowledge in the art.

[0026] 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 also be sequentially adjusted or adjusted in a manner that those skilled in the art can easily see. Therefore, the specification and drawings are only for the purpose of clearly describing one embodiment, and do not mean that the composition and / or order is necessary.

[0027] 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. Unless otherwise specified, "connection" and "coupling" in this application include direct and indirect connections (couplings).

[0028] The application provides a heating non-combustion device (hereinafter referred to as "device") which heats aerosol generating article A by using the principle of heating non-combustion to generate aerosol for users to use.

[0029] It is noted that the term aerosol as used herein 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.

[0030] As used herein, the term "aerosol generating article A" refers to any suitable compound or mixture of compounds that facilitates the formation of an aerosol (e.g., a stable aerosol that is substantially resistant to thermal degradation at the operating temperature of the system) 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.

[0031] 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.

[0032] Please refer to Figure 1 and Figure 2 The device includes a main housing 1, a power supply assembly 2, and a heating device 3. The main housing 1 can be assembled from one or more components for accommodating the power supply assembly 2 and the heating device 3. The main housing 1 has an installation space 11 inside which the power supply assembly 2 and the heating device 3 are arranged. The main housing 1 facilitates 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, and control buttons (not shown in the figure), etc. The power supply assembly 2 provides the power required for the heating device 3 to work, 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.

[0033] Since the power supply assembly 2 and the main housing 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.

[0034] Please refer to Figures 2 to 7The heating device 3 comprises a support assembly 31 and a heating assembly 32. The support assembly 31 is provided with a receiving opening 3111. The heating assembly 32 is suspended in the support assembly 31. The heating assembly 32 comprises a heating element 321 and a heat-conducting element 322. The heating element 321 comprises a side wall 3211 and a bottom wall 3212. The side wall 3211 and the bottom wall 3212 form a heating cavity 3213 which is open at one end and closed at the other end. The heating cavity 3213 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 3213. The heat-conducting element 322 is arranged on the side of the bottom wall 3212 facing the receiving opening 3111. The heat-conducting element 322 can be inserted into the aerosol generating article A. The heating element 321 can generate heat after being powered on as a heat source. Since the side wall 3211 and the bottom wall 3212 of the heating element 321 form the heating cavity 3213, the heating element 321 is arranged around the aerosol generating article A. Heat is directly transferred to the aerosol generating article A by surrounding heating to form an aerosol. Since the heat-conducting element 322 is arranged on the bottom wall 3212 of the heating element 321 and can contact and conduct heat with the heating element 321, heat is transferred to the aerosol generating article A by the heat-conducting element 322 to heat and form an aerosol. Since the heat-conducting element 322 can be inserted into the aerosol generating article A, central heating can be used. The application uses a combination of central heating and surrounding heating to increase the heating area, speed up the generation of aerosol, and fully heat the aerosol generating article A to improve the user's taste and improve the user's experience.

[0035] Please refer to Figure 4 and Figure 5 In a specific embodiment, the heating element 321 is made of conductive ceramic. The outer periphery of the heating element 321 is provided with an electrode part 323 electrically connected to the power supply assembly 2. The electrode part 323 comprises a positive electrode conductive part 3231 and a negative electrode conductive part 3232. The conductive ceramic directly serves as a heat source, which has a consistent structure, so that the heating element 321 uniformly heats as a whole. The generation process of the conductive ceramic is mature, and the heating element 321 can be directly prepared by using the conductive ceramic, which can simplify the generation process. The conductive ceramic is made of a certain ratio of conductive material (such as conductive metal) and ceramic material, for example, silicon carbide, which not only has good conductivity and can generate heat directly as a heat source after being powered on, but also has good heat conduction performance.

[0036] Please refer to Figure 6In another specific embodiment, the heating element 321 comprises a heating base 3214 and at least one heating area 3215, the heating area 3215 is arranged on the outer wall of the heating base 3214, and the outer periphery of the heating element 321 is provided with a positive electrode conductive part 3231 and a negative electrode conductive part 3232 electrically connected with the power supply assembly 2, and the positive electrode conductive part 3231 and the negative electrode conductive part 3232 are respectively electrically connected with the heating area 3215. In this embodiment, the function of the heating base 3214 is to conduct heat, which is made of high-thermal-conductivity materials, such as aluminum alloy, copper, aluminum nitride, and non-conductive ceramic materials. The heating area 3215 can be composed of a heating wire or a heating film, and the heating wire is formed by printing conductive paste. The heating area 3215 generates heat after being powered on, and transfers heat to the heating base 3214, which transfers part of the heat to the outside air to be heated to form a hot air flow to heat the aerosol generating article A in the form of airflow heating, part of the heat is directly transferred to the aerosol generating article A to heat in the form of surrounding heating, and part of the heat is transferred to the heat conducting element 322 to heat in the form of central heating through the heat conducting element 322.

[0037] In some specific embodiments, the heating area 3215 is provided with two or more, and the plurality of heating areas 3215 are arranged in sequence along the axis direction of the heating base 3214, and each heating area 3215 can correspond to one positive electrode conductive part 3231 or negative electrode conductive part 3232, and the plurality of heating areas 3215 share one negative electrode conductive part 3232 or positive electrode conductive part 3231, which can simplify the structure of the heating device 3. Of course, each heating area 3215 can also correspond to one positive electrode conductive part 3231 and one negative electrode conductive part 3232. In this embodiment, by arranging a plurality of heating areas 3215, different regions can be controlled to heat, so as to adjust the heating power (or heating temperature) of the heating device 3, and the heating power of each heating area 3215 can also be adjusted respectively, so that the heating temperature along the direction of the aerosol generating article A is different, so as to adapt to the characteristics that the sufficient heating temperature of the aerosol generating article A is different at different positions, and at the same time, the power of the entire heating device 3 can be reduced, and the loss can be reduced. The positive electrode conductive part 3231 and the negative electrode conductive part 3232 can be made of conductive metal materials (including copper, silver, tin, etc.), such as conductive wires made of conductive metal materials.

[0038] In order to further improve the uniformity of the heating of the aerosol generating article A, based on the characteristics that the hot air flow is more sufficient and uniform, please refer to Figure 5The limiting protrusion 324 is arranged on the side wall 3211 and / or the bottom wall 3212, and is used to support the aerosol generating article A to form an airflow space 325 between the end of the aerosol generating article A and the bottom wall 3212. Since the side wall 3211 and the bottom wall 3212 form a heating cavity 3213 in which the aerosol generating article A is arranged, when the limiting protrusion 324 is arranged on the side wall 3211 or the bottom wall 3212, the limiting protrusion 324 can abut against the end of the aerosol generating article A, so that there is a gap between the aerosol generating article A and the bottom wall 3212, which can serve as the airflow space 325. After external air enters the heating cavity 3213 and is heated to form a hot airflow, the external air can enter the inside of the aerosol generating article A from the airflow space 325 through the end of the aerosol generating article A, so as to not only increase the heating area, but also enable the aerosol generating article A to be heated sufficiently. The airflow space 325 can also serve as a temporary storage space for the hot airflow, so as to ensure the continuity of the aerosol generated by the aerosol generating article A.

[0039] In some specific embodiments, the limiting protrusion 324 can be provided with one, and is arranged at any position of the side wall 3211 close to the bottom wall 3212, or at any position of the bottom wall 3212, so that the aerosol generating article A is limited when being loaded to form the airflow space 325 between the aerosol generating article A and the bottom wall 3212.

[0040] In other specific embodiments, the limiting protrusion 324 can be provided with a plurality of (including two or more), and the plurality of limiting protrusions 324 are uniformly and spacedly arranged along the circumference of the heating element 321, and an airflow gap 326 is formed between adjacent two limiting protrusions 324. Since the plurality of limiting protrusions 324 are uniformly arranged, the airflow gaps 326 formed are also uniformly arranged. After the aerosol generating article A is inserted, the hot airflow can uniformly pass through the airflow space 325 along the circumference of the aerosol generating article A to enter the aerosol generating article A, so as to further effectively ensure the uniform heating of the aerosol generating article A.

[0041] Since the aerosol generating article A is arranged in the heating cavity 3213 formed by the side wall 3211 and the bottom wall 3212, when the aerosol generating article A directly contacts the side wall 3211, the packaging paper of the aerosol generating article A can be burnt and produce an odor due to the excessively high temperature, which affects the smoking taste of the aerosol. Therefore, the aerosol generating article A should be arranged spacedly from the side wall 3211, so as to not only avoid the generation of the odor, but also form an air inlet channel 328. One end of the air inlet channel 328 communicates with the accommodation opening 3111, and the other end communicates with the airflow space 325 through the airflow gap 326. In this way, external air can enter the airflow space 325 from the air inlet channel 328, and at the same time, the external air is heated to become a hot airflow in the process of flowing.

[0042] Please refer toFigure 5 In some embodiments, the inner wall of the side wall 3211 is provided with a plurality of protrusions 327 for abutting against the outer wall of the aerosol generating article A, and an air inlet passage 328 is formed between two adjacent protrusions 327. The protrusions 327 can also reduce the contact area with the heating element 321, thereby reducing the temperature of the packaging paper outside the aerosol generating article A and the risk of burning the aerosol generating article A. The plurality of protrusions 327 are uniformly arranged on the inner wall of the side wall 3211, which can also achieve the centering (coaxial with the heating cavity 3213) of the aerosol generating article A, thereby further effectively ensuring the uniform heating of the aerosol generating article A.

[0043] In some specific embodiments, the protrusions 327 are strip-shaped protrusions extending along the axial direction of the heating element 321. The extension length of the strip-shaped protrusions can be equal to or less than the extension length of the heating element 321. The strip-shaped protrusions can extend along the axial direction of the heating element 321, thereby reducing the air flow resistance and allowing the air to smoothly enter the airflow space 325.

[0044] In some embodiments, the protrusions 327 gradually decrease in size along the direction close to the center of the heating cavity 3213, which can further reduce the contact area with the aerosol generating article A. Of course, this structure design allows the protrusions 327 to partially insert into the outer wall of the aerosol generating article A, thereby improving the stability of clamping and supporting the aerosol generating article A.

[0045] Of course, in other specific embodiments, the protrusions 327 can also be point-shaped or block-shaped protrusions arranged on the inner wall of the side wall 3211. The point-shaped or block-shaped protrusions can be cylindrical, conical, or rectangular. The plurality of protrusions 327 are uniformly arranged along the axial direction and the circumferential direction of the heating element 321, so that the air inlet passages 328 are uniformly arranged, thereby allowing the air to uniformly enter along the air inlet passages 328 after the aerosol generating article A is inserted.

[0046] In some specific embodiments, the limiting protrusion 324 can also be configured to include a strip-shaped protrusion extending along the axial direction of the heating element 321. The strip-shaped protrusion can extend along the axial direction of the heating element 321, thereby further reducing the air flow resistance and allowing the air to smoothly enter the airflow space 325. Since the limiting protrusion 324 abuts against the end of the aerosol generating article A, and the protrusions 327 abut against the outer periphery of the aerosol generating article A, the extension length of the limiting protrusion 324 along the direction toward the center of the heating cavity 3213 is greater than that of the protrusions 327.

[0047] In some embodiments, the limiting protrusions 324 and the protrusions 327 are arranged in one-to-one correspondence, so that the air flow gap 326 and the air inlet channel 328 form a straight-through structure extending along the axis direction of the heating element 321, which can further reduce the resistance of air flow.

[0048] In other specific embodiments, the limiting protrusions 324 can also be point-like or block-like protrusions arranged on the inner wall of the side wall 3211, which can be cylindrical, conical or rectangular. A plurality of limiting protrusions 324 are uniformly arranged along the circumference of the heating element 321, so that the air flow gap 326 is uniformly arranged, thereby enabling air to enter the air flow space 325 uniformly along the air flow gap 326 after the aerosol generating article A is inserted.

[0049] Please refer to Figure 5 The heat conducting element 322 includes a tip portion 3221 and a base portion 3222, one end of the base portion 3222 is arranged at the middle of the bottom wall 3212, and the other end is connected with the tip portion 3221. The tip portion 3221 is used to pierce the aerosol generating article A, so that at least part of the base portion 3222 is inserted into the inside of the center of the aerosol generating article A, to ensure the centering installation of the aerosol generating article A in the heating cavity 3213, so that the aerosol generating article A is uniformly heated. The main function of the heat conducting element 322 is heat conduction, which is made of high thermal conductivity materials, such as aluminum alloy, copper, aluminum nitride, and non-conductive ceramic materials.

[0050] In some specific embodiments, the heat conducting element 322 is configured in a needle-like structure, a rod-like structure or a sheet-like structure, one end of the needle-like structure, the rod-like structure and the sheet-like structure is provided with a tip portion 3221, and the heat conducting element 322 can be a solid structure or an internally hollow structure, thereby reducing the mass and cost of the heating device 3.

[0051] In other specific embodiments, please refer to Figure 7 The heat conducting element 322 is configured in a radial structure mainly formed by a plurality of sheet-like bodies 3223, one end of the plurality of sheet-like bodies 3223 is connected, and the other end is arranged outwardly in a radial manner with the axis of the heat conducting element 322 as the center, and adjacent two sheet-like bodies 3223 are arranged at the same angle, so that the heat conducting element 322 and the aerosol generating article A are uniformly contacted.

[0052] Since there is a possibility that the inner wall of the heating element 321 contacts the aerosol generating article A, the inner wall of the heating element 321 is provided with an anti-adhesion coating (not shown in the figure), which can reduce the adhesion of the aerosol generating article A on the heating element 321. The anti-adhesion coating is a dense coating structure formed by spraying nanomaterials or ceramic materials.

[0053] Please refer to Figure 3 and Figure 4The support assembly 31 comprises a support housing 311, a base 312, and a gland 313. A receiving opening 3111 is formed on the support housing 311, and the gland 313 is inserted into the support housing 311 from the receiving opening 3111. The inside of the support housing 311 is provided with a support protrusion 3112 extending from the inner wall of the support housing 311 towards the center direction. The opening end of the heating element 321 is provided with a flange 3216 protruding from the outer wall of the heating element 321 in a direction away from the heating cavity 3213. The flange 3216 can be lapped on the support protrusion 3112. The gland 313 is arranged on the side of the flange 3216 facing the receiving opening 3111, so as to clamp the heating element 321 between the gland 313 and the support housing 311, so that the heating element 321 is suspended in the support housing 311 and arranged coaxially with the support housing 311. The base 312 is arranged on the side of the support housing 311 away from the gland 313, and is spaced apart from the heating element 321. This can reduce the area of contact between the heating device 3 and the heating element 321, thereby reducing heat loss and improving the heating efficiency of the heating device 3.

[0054] In order to improve the heating efficiency of the heating device 3 and reduce heat loss, the support housing 311 of the support assembly 31 has good heat preservation and insulation effect and is made of a material with low thermal conductivity. In addition, since the space enclosed by the base 312 and the support housing 311 has a high temperature, the base 312 and the support housing 311 are made of a high-temperature-resistant material, such as PEEK.

[0055] The support assembly 31 further comprises a positioning ring 314 arranged on the side of the gland 313 away from the heating element 321. The inner wall of the positioning ring 314 is provided with a plurality of positioning protrusions 3141. The positioning protrusions 3141 can abut against the outer wall of the aerosol generating article A to further position and center the aerosol generating article A. The plurality of positioning protrusions 3141 are spaced apart, and the gaps between the plurality of positioning protrusions 3141 are in communication with the receiving opening 3111 and the heating cavity 3213, so that external air can enter the heating cavity 3213 through the gaps between the plurality of positioning protrusions 3141. The positioning protrusions 3141 can also have a strip structure or a dot structure. When the positioning protrusions 3141 have a dot structure, the cross section of the positioning protrusions 3141 along the axis of the heating element 321 can be rectangular, circular, or triangular.

[0056] Since the gland 313 is arranged between the positioning ring 314 and the heat generating part 321, the external air also needs to pass through the gland 313, and the inner wall of the gland 313 is arranged in a variable diameter manner, that is, the inner diameter of the gland 313 gradually decreases along the direction close to the heat generating part 321, the small-diameter end cooperates with the supporting protrusion 3112 to realize the clamping and fixing of the heat generating part 321, and the inner cavity from the large-diameter end to the small-diameter end can also form a space for the circulation of external air, so that the external air enters the heating cavity 3213 in sequence through the gap between the plurality of positioning protrusions 3141, the air circulation space in the gland 313.

[0057] The above 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 utility model relates to an aerosol generating article heating device, comprising: a support assembly provided with a receiving opening; and a heating assembly suspended inside the support assembly, the heating assembly comprising a heating element and a heat-conducting element, the heating element comprising a side wall and a bottom wall, the side wall and the bottom wall forming a heating cavity open at one end and closed at the other end, the heating cavity being in communication with the receiving opening, the receiving opening being used for inserting and accommodating an aerosol generating article in the heating cavity; the heat-conducting element is provided on the side of the bottom wall facing the receiving opening, the heat-conducting element is used for inserting into the inside of the aerosol generating article, the heating element is used for heating by electricity and directly transferring heat to the aerosol generating article and / or through the heat-conducting element to the aerosol generating article for heating to form an aerosol.

2. The heating device of claim 1, wherein The side wall and / or the bottom wall is provided with a limiting protrusion for supporting the aerosol generating article to form an airflow space between the end of the aerosol generating article and the bottom wall.

3. The heating device of claim 2, wherein, The inner wall of the side wall is provided with a plurality of protrusions for abutting against the outer wall of the aerosol generating article, an air inlet channel is formed between adjacent two protrusions, and the two ends of the air inlet channel are in communication with the receiving opening and the airflow space respectively.

4. The heating device of claim 3, wherein The limiting protrusion is provided with a plurality of limiting protrusions, the plurality of limiting protrusions are all extended along the axis direction of the heating element and are spaced apart along the circumference of the heating element, an airflow gap is formed between adjacent two limiting protrusions, and the air inlet channel is in communication with the airflow space through the airflow gap.

5. The heating device of claim 1, wherein, The heating element is made of conductive ceramic, and the outer periphery of the heating element is provided with a positive electrode conductive part and a negative electrode conductive part electrically connected with a power supply assembly.

6. The heating device of claim 1, wherein, The heating element comprises a heating base and at least one heating zone, the heating zone is provided on the outer wall of the heating base, the outer periphery of the heating element is provided with a positive electrode conductive part and a negative electrode conductive part electrically connected with a power supply assembly, and the positive electrode conductive part and the negative electrode conductive part are electrically connected with the heating zone respectively.

7. The heating device according to any one of claims 1-6, characterized in that, The heat-conducting element comprises a tip part and a base part, one end of the base part is provided in the middle of the bottom wall, the other end is connected with the tip part, the tip part is used for piercing the aerosol generating article, and at least part of the base part is inserted into the inside of the aerosol generating article.

8. The heating device of claim 1, wherein, The inner wall of the heating element is provided with an anti-sticking coating.

9. The heating device of claim 1, wherein, The support assembly comprises a support shell, a base and a gland, the receiving opening is formed on the support shell, and the gland is inserted into the support shell from the receiving opening; the inside of the support shell is provided with a support protrusion, the open end of the heating element is provided with a flange, the flange is protrudingly arranged on the outer wall of the heating element in the direction away from the heating cavity, the flange is lapped on the support protrusion, the gland is arranged on one side of the flange facing the receiving opening, so that the heating element is suspended in the support shell and coaxially arranged with the support shell, the base is arranged on the side of the support shell away from the receiving opening, used for plugging the support shell, and the base is spaced apart from the heating element.

10. A heat-not-burn device, characterized by The heating device as claimed in any one of claims 1-9, wherein the heating device comprises a main housing, a power supply assembly and the heating device, the power supply assembly and the heating device are arranged in the main housing, and the power supply assembly and the heating device are electrically connected.

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