Heating module and aerosol generation device

Abstract

The present application relates to a heating module and an aerosol generation device. The heating module comprises: a heating assembly for heating an aerosol generation article; and a heat insulation assembly, which is arranged on the periphery of the heating assembly and comprises a first heat insulation layer and a second heat insulation layer located on the periphery of the first heat insulation layer, wherein the two opposite side edges of the first heat insulation layer abut against each other so as to form a first tubular body that has a first joint on a side surface, and the two opposite side edges of the second heat insulation layer abut against each other so as to form a second tubular body that has a second joint on a side surface, the first j oint and the second j oint being staggered with each other.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present disclosure claims priority to Chinese Patent Application No. 202211737087.1, filed with the China Patent Office on December 30, 2022, and entitled "HEATING MODULE AND AEROSOL GENERATION DEVICE", which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] Embodiments of the present disclosure relate to the technical field of aerosol generation, and in particular, to a heating module and an aerosol generation device.BACKGROUND

[0003] An aerosol generation device includes a heating assembly and a heat insulation assembly. The heating assembly is used for electrically heating an aerosol generation article, such as a cigarette and a cigar, so that the aerosol generation article generates an aerosol without being burnt. The heat insulation assembly is arranged between the heating assembly and a housing. Through the heat insulation assembly, the aerosol generation device can effectively store heat, thereby reducing energy consumption. Moreover, the housing of the aerosol generation device is prevented from being overheated, so that a user can make contact with the housing comfortably.

[0004] However, an existing heat insulation assembly realizing multi-layer heat insulation has low formation efficiency and is likely to have a dramatically uneven thickness.SUMMARY

[0005] A heating module is provided in embodiments of the present disclosure. The heating module includes: a heating assembly used for heating an aerosol generation article; and a heat insulation assembly arranged on a periphery of the heating assembly and including a first heat insulation layer and a second heat insulation layer; where the second heat insulation layer is located on a periphery of the first heat insulation layer; two opposite side edges of the first heat insulation layer abut against each other, so as to form a first tubular body having a first joint on a side surface; two opposite side edges of the second heat insulation layer abut against each other, so as to form a second tubular body having a second joint on a side surface; a thickness of the first tubular body and a thickness of the second tubular body are even; and the first joint and the second joint are staggered.

[0006] A heating module is provided in the embodiments of the present disclosure. The heating module includes: a heating assembly used for heating an aerosol generation article; and a heat insulation assembly arranged on a periphery of the heating assembly and including a first heat insulation layer and a second heat insulation layer; where the second heat insulation layer is located on a periphery of the first heat insulation layer; the first heat insulation layer includes a first aerogel, and the second heat insulation layer includes a second aerogel; and a fire retardant in the first aerogel is different from a fire retardant in the second aerogel, so as to enable a heat-resistance temperature of the first heat insulation layer to be higher than a heat-resistance temperature of the second heat insulation layer.

[0007] An aerosol generation device is provided in the embodiments of the present disclosure. The aerosol generation device includes the heating module, and further includes a power supply assembly, where the power supply assembly is electrically connected to the heating module, so as to supply electricity to the heating assembly for heating an aerosol generation article.

[0008] According to the above heating module and aerosol generation device, the two opposite side edges of the first heat insulation layer abut against each other, so that the first tubular body formed has no overlapping region. The two opposite side edges of the second heat insulation layer abut against each other, so that the second tubular body formed has no overlapping region. Thus, the heat insulation assembly having an even thickness is formed. The two opposite side edges of the first heat insulation layer abut against each other, so that the first joint is formed on the side surface of the first tubular body. The two opposite side edges of the second heat insulation layer abut against each other, so that the second joint is formed on the side surface of the second tubular body. The first joint and the second joint are staggered from each other, and thus the first joint corresponds to an intact portion of the side surface of the second tubular body, and the second joint corresponds to an intact portion of the side surface of the first tubular body. Compared with a case where the first joint is aligned with the second joint, the two opposite side edges of the first heat insulation layer keep abutting against each other, and the two opposite side edges of the second heat insulation layer keep abutting against each other, and thus the heat insulation assembly can be formed more efficiently and stably.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] One or more embodiments are illustratively described with reference to the figures in the corresponding accompanying drawings, and these illustrative descriptions are not to limit the embodiments. Elements having same reference numerals in the accompanying drawings are denoted as similar elements, and the figures in the accompanying drawings are not drawn to scale, unless particularly stated otherwise. FIG. 1 is a sectional view of an aerosol generation device according to an embodiment of the present disclosure; FIG. 2 is a schematic sectional view of a heat insulation assembly according to an embodiment of the present disclosure; FIG. 3 is a schematic diagram of an unrolled heat insulation assembly according to an embodiment of the present disclosure; FIG. 4 is a schematic enlarged view of a part of a heat insulation assembly according to an embodiment of the present disclosure; FIG. 5 is a schematic diagram of a wire manager according to an embodiment of the present disclosure; FIG. 6 is a schematic diagram of a heating assembly according to an embodiment of the present disclosure; and FIG. 7 is a schematic diagram of a part of a longitudinal section of a heating assembly according to an embodiment of the present disclosure.

[0010] In the drawings: 1. aerosol generation article; 2. heating assembly; 21. heating tube; 22. upper end cap; 221. first protrusion; 222. second protrusion; 23. upper sealing member; 24. lower end cap; 241. third protrusion; 25. nick 3. power supply assembly; 31. power supply; 32. circuit board; 4. heat insulation assembly; 41. first heat insulation layer; 411. first joint; 412. first aerogel; 42. second heat insulation layer; 421. second joint; 422. second aerogel; 43. heat uniformization layer; 431. self-overlapping region; 432. third sheet; 5. housing; 61. first temperature measurer; 62. second temperature measurer; 7. wire manager; and 8. air layer. DETAILED DESCRIPTION

[0011] The technical solutions in embodiments of the present disclosure are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the embodiments described are merely some embodiments rather than all embodiments of the present disclosure. All other embodiments derived by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure.

[0012] The terms "first", "second", and "third" in the present disclosure are merely used for description, and cannot be interpreted as indicating or implying relative importance or implicitly indicating a quantity or order of the technical features indicated. All directional indications (such as upper, lower, left, right, front, back...) in the embodiments of the present disclosure are merely used for explaining a relative position relationship, a motion situation, etc. between components in a particular posture (as shown in the accompanying drawings). If the particular posture changes, the directional indications change accordingly. In addition, the terms "comprise", "include", "have", and their any variants are intended to cover the non-exclusive inclusion. For example, a process, method, system, product, or apparatus including a series of steps or units is not limited to steps or units listed, but further optionally includes steps or units not listed, or further optionally includes other steps or units inherent to the process, method, product, or apparatus.

[0013] The "embodiment" mentioned herein indicates that particular features, structures, or characteristics described with reference to the embodiment can be included in at least one embodiment of the present disclosure. The phrase appearing at various positions in the description unnecessarily indicates a same embodiment or an independent or alternative embodiment exclusive to other embodiments. A person skilled in the art explicitly or implicitly understands that the embodiments described herein can be combined with other embodiments.

[0014] It should be noted that when referred to as "being fixed to" another element, an element can be directly on another element, or an intervening element can be present. When deemed as being "connected to" another element, an element can be directly connected to another element, or one or more intervening elements may be present between the element and another element simultaneously. The terms "vertical", "horizontal", "left", "right", etc. used herein are merely for the purpose of description, and do not indicate a unique implementation.

[0015] With reference to FIG. 1, an aerosol generation device is provided in the embodiments of the present disclosure. The device may be used for heating an aerosol generation article 1, so that an aerosol is volatilized from the aerosol generation article 1 for inhalation.

[0016] As used herein, the term "aerosol generation article" indicates an article including an aerosol formation matrix. When heated, the aerosol formation matrix releases volatile compounds for forming the aerosol. The term "aerosol generation article" indicates an article including an aerosol formation matrix. The aerosol formation matrix is intended to release volatile compounds for forming the aerosol through heating rather than burning. Compared with an aerosol generated by burning or thermally degrading an aerosol formation matrix, the aerosol formed by heating the aerosol formation matrix may include fewer known harmful components. In an embodiment, the aerosol generation article is removably connected to the aerosol generation device. The article may be disposable or reusable.

[0017] The aerosol formation matrix may be a solid aerosol formation matrix. The solid aerosol formation matrix may include tobacco. The solid aerosol formation matrix may include a tobacco-containing material, and the tobacco-containing material includes volatile tobacco scent compounds released from the matrix when heated. The solid aerosol formation matrix may include a non-tobacco material. The solid aerosol formation matrix may include the tobacco-containing material and the non-tobacco material. When the aerosol formation matrix is the solid aerosol formation matrix, the aerosol generation article may be a cigarette, a cigarette stick, a cigar, etc.

[0018] The aerosol formation matrix may be a liquid aerosol formation matrix. The liquid aerosol formation matrix may include a tobacco substance-containing liquid including a volatile tobacco scent component, or a liquid including a non-tobacco substance. The liquid aerosol formation matrix may include, but is not limited to, water, a solvent, anhydrous alcohol, a plant extract, a spice, a scenting agent, a vitamin mixture, etc. The spice may include, but is not limited to, an areca nut extraction liquid, menthol, peppermint, spearmint oil, various fruity components, etc. The scenting agent may include components that can provide various scents or flavors for a user. The vitamin mixture may include, but is not limited to, a mixture mixed with at least one of vitamin A, vitamin B, vitamin C, and vitamin E. When the aerosol formation matrix is the liquid aerosol formation matrix, the aerosol generation article may be a cartridge, an atomizer, etc.

[0019] As used herein, the term "aerosol generation device" is a device connected to or interacting with the aerosol generation article, so as to form the inhalable aerosol. The device interacts with the aerosol formation matrix, so as to generate the aerosol. An electrically-operated aerosol generation device is a device including one or more components used for supplying energy from, for example, a power supply assembly, to heat the aerosol formation matrix, so as to generate the aerosol.

[0020] The aerosol generation device may be described as a heated aerosol generation device that is a type of aerosol generation device including a heating module. The heating module is internally provided with a heating assembly 2, and the heating assembly 2 is used for heating the aerosol formation matrix of the aerosol generation article 1, so as to generate the aerosol.

[0021] When the aerosol formation matrix is the solid aerosol formation matrix, the heating assembly may include an external heating assembly or an internal heating assembly, or an air heating assembly. As used herein, the term "external heating assembly" indicates a heating assembly located outside the aerosol generation article when an aerosol generation system including the aerosol generation article is assembled. As used herein, the term "internal heating assembly" indicates a heating assembly at least partially located inside the aerosol generation article when an aerosol generation system including the aerosol generation article is assembled. As used herein, the term "air heating assembly" indicates a heating assembly used for heating air in an air inlet channel. The air enters the aerosol generation article through the air inlet channel. The air heating assembly heats the air flowing through the air inlet channel into high-temperature air. The high-temperature air then enters the aerosol generation article, so as to exchange heat with the aerosol generation article. Thus, the aerosol generation article is heated and baked.

[0022] In an embodiment, the external heating assembly, the internal heating assembly, or the air heating assembly includes a resistance material, and the resistance material may generate Joule heat when energized. The suitable resistance material may include, but is not limited to, a semiconductor, such as a doped ceramic, a conductive ceramic (for example, molybdenum disilicide), carbon, graphite, metal, a metal alloy, and a composite material made of a ceramic material and a metal material. The type of composite material may include a doped ceramic or a non-doped ceramic. A suitable example of the doped ceramic includes doped silicon carbide. A suitable example of the metal includes titanium, zirconium, tantalum, and platinum group metals. Suitable examples of the metal alloy include stainless steel, constantan, a nickel-containing alloy, a cobalt-containing alloy, a chromium-containing alloy, an aluminum-containing alloy, a titanium-containing alloy, a zirconium-containing alloy, a hafnium-containing alloy, a niobium-containing alloy, a molybdenum-containing alloy, a tantalum-containing alloy, a tungsten-containing alloy, a tin-containing alloy, a gallium-containing alloy, a manganese-containing alloy, an iron-containing alloy, a nickel-iron-cobalt based superalloy or stainless steel, an iron-aluminum based alloy, and an iron-manganese-aluminum based alloy. In the composite material, to make the resistance material visible, the resistance material needs to be buried in an insulating material, or coated or packaged by the insulating material, or vice versa, which depends on the kinetics of energy transfer and external physicochemical properties required. The heating assembly may include metal etched foil that takes a role of insulation between two layers of inert materials. In this case, the inert material may include all-polyimide, mica foil, etc.

[0023] In an embodiment, the external heating assembly, the internal heating assembly, or the air heating assembly includes a susceptor. When used herein, the term "susceptor" indicates a material that can convert electromagnetic energy into heat. When the susceptor is located in a varying electromagnetic field, an eddy current formed in the susceptor causes the susceptor to generate heat. In the type of embodiment, the susceptor is designed to be connected to the aerosol generation device including a magnetic field generator. The magnetic field generator generates the varying magnetic field, so as to heat the susceptor located in the varying electromagnetic field. When in use, the susceptor is located in the varying magnetic field generated by the magnetic field generator. The magnetic field generator is electrically connected to the power supply assembly, and the power supply assembly supplies a current to the magnetic field generator for generating the varying magnetic field. The magnetic field generator may include one or more induction coils for generating the varying magnetic field, and the one or more induction coils may surround the susceptor. In an embodiment, the aerosol generation device may generate a varying magnetic field of 1 MHz-30 MHz, for example, 2 MHz-10 MHz such as 5 MHz-7 MHz. In an embodiment, the aerosol generation device may generate a varying magnetic field having a field strength (H field) of 1 kA / m-5 kA / m, for example, 2 kA / m-3 kA / m such as approximately 2.5 kA / m.

[0024] The susceptor may include metal or carbon. In an embodiment, the susceptor may include a ferromagnetic material, for example, ferrite, ferromagnetic steel, and stainless steel. In an embodiment, the susceptor includes a nickel-iron alloy. In an embodiment, the susceptor includes 400-series stainless steel, and the 400-series stainless steel includes 410-grade stainless steel, 420-grade stainless steel, and 430-grade stainless steel. When the susceptor is located in electromagnetic fields having similar frequencies and field strengths, different materials consume different amounts of energy. Thus, parameters of the susceptor, such as a material type, a length, a width, and a thickness, may all be changed to provide required power consumption in known electromagnetic fields.

[0025] In an embodiment, the external heating assembly, the internal heating assembly, or the air heating assembly includes an infrared electric-heating coating. The infrared electric-heating coating may generate heat energy when energized, so as to further generate an infrared ray having a particular wavelength, for example, a far infrared ray of 8 µm-15 µm. When the wavelength of the infrared ray matches an absorption wavelength of the aerosol formation matrix, energy of the infrared ray is likely to be absorbed by the aerosol formation matrix. In an implementation of the present disclosure, the wavelength of the infrared ray is not limited. The infrared ray may be an infrared ray of 0.75 µm-1000 µm, and optionally, a far infrared ray of 1.5 µm-400 µm. Optionally, the infrared electric-heating coating is formed by fully and evenly stirring far infrared electric-heating ink, ceramic powder, and an inorganic adhesive, then coating an outer surface of a matrix with a resulting mixture, and finally drying and curing a resulting matrix for particular time. A thickness of the infrared electric-heating coating is 30 µm-50 µm. Certainly, the infrared electric-heating coating may also be formed by mixing and stirring tin tetrachloride, tin oxide, antimony trichloride, titanium tetrachloride, and anhydrous copper sulfate in a particular proportion, and then coating an outer surface of a matrix with a resulting mixture. Alternatively, the infrared electric-heating coating may be one of a silicon carbide ceramic layer, a carbon fiber composite layer, a zirconium-titanium series oxide ceramic layer, a zirconium-titanium series nitride ceramic layer, a zirconium-titanium series boride ceramic layer, a zirconium-titanium series carbide ceramic layer, an iron series oxide ceramic layer, an iron series nitride ceramic layer, an iron series boride ceramic layer, an iron series carbide ceramic layer, a rare-earth series oxide ceramic layer, a rare-earth series nitride ceramic layer, a rare-earth series boride ceramic layer, a rare-earth series carbide ceramic layer, a nickel-cobalt series oxide ceramic layer, a nickel-cobalt series nitride ceramic layer, a nickel-cobalt series boride ceramic layer, a nickel-cobalt series carbide ceramic layer, and a high-silicon molecular sieve ceramic layer. The infrared electric-heating coating may also be a coating made of another existing material.

[0026] In an embodiment, one or more heating assemblies may be provided. The one or more heating assemblies can reach a temperature of approximately 200°C-440°C, so that the aerosol generation article can generate an aerosol.

[0027] When the aerosol formation matrix is the liquid aerosol formation matrix, the heating assembly includes a liquid guide member used for absorbing and transferring the liquid aerosol formation matrix, and an atomization member used for atomizing at least a part, on the liquid guide member, of the liquid aerosol formation matrix. The liquid guide member may be made of a material having capillary channels or pores, such as a hard or rigid capillary structure including fiber cotton, a porous ceramic body, a glass fiber rope, a porous glass ceramic, porous glass, etc. The liquid guide member is in fluid communication with a bin storing the liquid aerosol formation matrix, so as to suck the liquid aerosol formation matrix transferred from the bin, and transfer the liquid aerosol formation matrix to the vicinity of the atomization member. In an embodiment, the liquid guide member includes an atomization surface and a liquid suction surface, and the liquid suction surface is in fluid communication with the bin. The atomization member is the heating assembly. The heating assembly is arranged on the atomization surface, and is used for heating, when energized, at least a part, sucked by the liquid guide member, of the liquid aerosol formation matrix. Thus, the aerosol is generated and released after escaping from the atomization surface. For example, the atomization member may be formed on the atomization surface of the liquid guide member through mounting, printing, depositing, etc. In some embodiments, the atomization member may be made of stainless steel, a nickel-chromium alloy, an iron-chromium-aluminum alloy, metal titanium, etc. In an embodiment, the liquid guide member may be oil absorption cotton. The atomization member may be a heat generation wire, so as to be energized for heat generation according to the heat generation principle of a resistance wire. The bin is used for storing the liquid aerosol formation matrix. The oil absorption cotton is used for absorbing the liquid aerosol formation matrix in the bin and supplying the liquid aerosol formation matrix to the heat generation wire. The heat generation wire is attached to the oil absorption cotton, and is used for heating the liquid aerosol formation matrix on the oil absorption cotton, so that corresponding e-liquid smoke is generated. In some other embodiments, the heating assembly may employ an ultrasonic atomization mode and a related structure, or a molecular resonance atomization mode and a related structure.

[0028] With reference to FIG. 1, the aerosol generation device may include a power supply assembly 3 used for supplying electricity to the heating module. The power supply assembly 3 may include a power supply 31, and the power supply may be any suitable battery. In an embodiment, the battery is a lithium-ion battery. Alternatively, the battery may be a nickel metal hydride battery, a nickel-cadmium battery, or a lithium-based battery, for example, a lithium-cobalt battery, a lithium iron phosphate battery, a lithium titanate battery, and a lithium polymer battery. The power supply assembly 3 may include a circuit board 32 and one or more control circuits arranged on the circuit board 32. The control circuit may control output of the power supply 31, for example, enable the power supply 31 to output an alternating current or a direct current, or enable the power supply 31 to output a current or a voltage in a form of a pulse.

[0029] The control circuit may be provided with one or more controllers. The controller may control an overall operation of the aerosol generation device. Specifically, the controller controls operations of the battery and the heating assembly, and operations of other elements in the aerosol generation device. In addition, the controller may determine whether the aerosol generation device is operable by checking a state of the element of the aerosol generation device. The controller includes at least one processor. The processor may include a logic gate array or a combination of a general-purpose microprocessor and a memory for storing executable programs in the microprocessor. In addition, a person skilled in the art should understand that the controller may include another type of hardware.

[0030] With reference to FIG. 1, the aerosol generation device further includes a housing 5, the heating module further includes a heat insulation assembly 4, the housing 5 is internally provided with an accommodation cavity used for accommodating at least part of the aerosol generation article 1, and the heating assembly 2 is arranged inside the housing 5, so as to heat the aerosol generation article 1 inside the housing 5. The heat insulation assembly 4 is located inside the housing 5 and arranged on a periphery of the accommodation cavity. Thus, the heat insulation assembly 4 can not only confine heat in the accommodation cavity, thereby reducing energy consumption, but can also prevent a temperature of a surface of the housing 5 from being excessively high, thereby preventing the housing 5 from being overheated.

[0031] With reference to FIG. 2, the heat insulation assembly 4 includes a first heat insulation layer 41 and a second heat insulation layer 42. Compared with a case where only one heat insulation layer having a great thickness is arranged, multi-layer heat insulation is performed through a plurality of heat insulation layers, so that a heat insulation effect is more desirable. The second heat insulation layer 42 is located on a periphery of the first heat insulation layer 41. The first heat insulation layer 41 is closer to the heating assembly 2 than the second heat insulation layer 42, and thus the first heat insulation layer 41 needs to bear a higher temperature. Thus, a heat-resistance temperature of the first heat insulation layer 41 is not lower than a heat-resistance temperature of the second heat insulation layer 42. In an example, the first heat insulation layer 41 and the second heat insulation layer 42 are made of different heat insulation materials, and a heat-resistance temperature of the first heat insulation layer 41 is higher than a heat-resistance temperature of the second heat insulation layer 42. In an example, in order that the aerosol generation article 1 generates an aerosol having a desirable mouth feel, the heating assembly 2 needs to reach a temperature of approximately 250°C-440°C. Thus, a heat-resistance temperature of the first heat insulation layer 41 is not lower than 250°C. For example, the heat-resistance temperature of the first heat insulation layer 41 may be 300°C. Moreover, a heat-resistance temperature of the second heat insulation layer 42 may be not higher than 220°C. For example, the heat-resistance temperature of the second heat insulation layer 42 may be 180°C. In an example, the first heat insulation layer 41 and the second heat insulation layer 42 are made of an identical heat insulation material, and have an identical heat-resistance temperature. The identical heat-resistance temperature may be not lower than 250°C.

[0032] The heat insulation material for making the first heat insulation layer 41 and / or the second heat insulation layer 42 may be one of or any combination of asbestos, a glass fiber, an aerogel, polyetheretherketone, imide, polyetherimide, and a ceramic.

[0033] In an embodiment, each of the first heat insulation layer 41 and the second heat insulation layer 42 includes an aerogel. The aerogel in the first heat insulation layer 41 may be different from the aerogel in the second heat insulation layer 42. To be specific, the aerogel in the first heat insulation layer 41 may be a first aerogel 412, and the aerogel in the second heat insulation layer 42 may be a second aerogel 422 different from the first aerogel 412. Each of the first aerogel 412 and the second aerogel 422 may include a fire retardant. The fire retardant may include one or more of aluminum hydroxide, magnesium hydroxide, molybdenum hydroxide, ammonium polyphosphate, polyphosphoester, teflon, melamine, melamine phosphate, and tetraethyl N,N-p-phenylenediaminodibenzyl phosphate. In an example, the fire retardant in the first aerogel includes teflon. To be specific, the first heat insulation layer 41 includes an aerogel combined with teflon. The fire retardant in the second aerogel includes melamine. To be specific, the second heat insulation layer 42 includes an aerogel combined with melamine. The first aerogel 412 and the second aerogel 422 may be different by including different types of fire retardants or by including different amounts of the one or more fire retardants included, and thus have different heat-resistance temperatures.

[0034] Each of the first aerogel 412 and the second aerogel 422 may further include an infrared blocking agent and silicon oxide. The infrared blocking agent includes one or more of iron oxide, manganese oxide, nickel oxide, titanium oxide, chromium oxide, indium tin oxide, antimony tin oxide, zinc aluminum oxide, mica powder, talcum powder, and titanium dioxide. 1 g-50 g of the fire retardants and 1 g-50 g of the infrared blocking agents may be doped with each liter of the silicon dioxide solutions. A base material of the first aerogel and / or the second aerogel may be one of special-shaped members prefabricated from an inorganic fiber base material, a porous inorganic plate, an inorganic fiber, and a porous inorganic plate. The inorganic fiber base material may be one or more of a glass fiber, a ceramic fiber, a pre-oxidized fiber, an aluminum silicate fiber, a mullite fiber, a basalt fiber, a polyester fiber, a carbon fiber, etc. The porous inorganic plate is a plate made of one or more of aluminum silicate, calcium silicate, mullite, basalt, volcanic rock, bentonite, expanded perlite, foaming macromolecular resin, and foaming phenolic resin. The first aerogel 412 and the second aerogel 422 may be different by including different types of infrared blocking agents or different amounts of the one or more infrared blocking agents included, and thus have different thermal conductivity.

[0035] Certainly, the first aerogel 412 and the second aerogel 422 may be different by including different types of base materials or different amounts of the one or more base materials. The first aerogel 412 and the second aerogel 422 may be different by including different amounts of silicon dioxide. The first aerogel 412 and the second aerogel 422 may be different due to different production processes. The first aerogel 412 and the second aerogel 422 may also be different due to other different components. In conclusion, the first aerogel 412 and the second aerogel 422 are different, so that the first heat insulation layer 41 and the second heat insulation layer 42 may have different heat-resistance temperatures, or different thermal conductivity, or other different attributes.

[0036] The first heat insulation layer 41 and the second heat insulation layer 42 have low thermal conductivity, and thus have desirable heat insulation performance. The thermal conductivity of the first heat insulation layer 41 and the second heat insulation layer 42 may be 0.011 W / (m K)-0.026 W / (m K). In an example, the thermal conductivity of the first heat insulation layer 41 and the second heat insulation layer 42 may be 0.014 W / (m K)-0.018 W / (m K). In an example, the thermal conductivity of the first heat insulation layer 41 is higher than the thermal conductivity of the second heat insulation layer 42. The thermal conductivity of the first heat insulation layer 41 may be 0.020 W / (m K)-0.026 W / (m K). The thermal conductivity of the second heat insulation layer 42 may be 0.014 W / (m K)-0.020 W / (m K). Through higher thermal conductivity of the first heat insulation layer 41, excessively-high-temperature heat is prevented from being concentrated on the first heat insulation layer 41, so that shortening of the service life after the first heat insulation layer 41 is burnt under a high temperature can be avoided. The second heat insulation layer 42 having lower thermal conductivity is arranged on the periphery of the first heat insulation layer 41, so that loss generated after the heat passes through the first heat insulation layer 41 and continues to pass through the second heat insulation layer 42 can be effectively prevented. Under the combined action of heat insulation by the first heat insulation layer 41 and the second heat insulation layer 42, a temperature of the accommodation cavity can be maintained.

[0037] A thickness of the first heat insulation layer 41 and / or the second heat insulation layer 42 may be 0.3 mm-2.0 mm. If the thickness of the heat insulation layer is less than 0.3 mm, the heat insulation effect is undesirable. If the thickness of the heat insulation layer is greater than 2.0 mm, the aerosol generation device is excessively large in size. In an example, the thickness of the first heat insulation layer 41 and / or the second heat insulation layer 42 is 0.5 mm-1.5 mm.

[0038] The first heat insulation layer 41 and the second heat insulation layer 42 may have different thicknesses. In an example, increasing the thickness of the heat insulation layer can improve the heat insulation effect of the heat insulation layer. When the thermal conductivity of the second heat insulation layer 42 is less than the thermal conductivity of the first heat insulation layer 41, in a case where a total thickness of the heat insulation assembly 4 is limited, by increasing the thickness of the second heat insulation layer 42, the thickness of the second heat insulation layer 42 is greater than the thickness of the first heat insulation layer 41. Compared with a case of increasing the thickness of the first heat insulation layer, the heat insulation effect of the heat insulation assembly 4 can be further improved. When the thermal conductivity of the second heat insulation layer 42 is equal to the thermal conductivity of the first heat insulation layer 41, by increasing the thickness of at least one of the first heat insulation layer 41 and the second heat insulation layer 42, the heat insulation effect of the heat insulation assembly can also be improved. In an example, the thickness of the second heat insulation layer 42 is 1.5 mm, and the thickness of the first heat insulation layer 41 is 0.5 mm, but which is not intended to limit the present disclosure. It should be noted that different thicknesses of the first heat insulation layer 41 and the second heat insulation layer 42 are optional rather than mandatory. To be specific, in some embodiments, the first heat insulation layer 41 and the second heat insulation layer 42 may have the identical thickness.

[0039] The heat-resistance temperature and the heat insulation effect of an existing aerogel generally have an inverse relationship. To be specific, an aerogel having a high heat-resistance temperature generally has high thermal conductivity and an undesirable heat insulation effect. Consequently, it is difficult to prevent loss of heat released by the heating assembly and an excessively-high temperature of the housing of the aerosol generation device. An aerogel having low thermal conductivity and a desirable heat insulation effect is generally not resistant to a high temperature, and thus will be aged rapidly and short in service life under a temperature at which the heating assembly heats the aerosol generation article. Moreover, to ensure the heat insulation effect of the aerogel, it is common practice to arrange a thick aerogel layer, which is obviously not conducive to miniaturization of the aerosol generation device. Thus, in the field of the aerosol generation device, for the aerosol generation device, a person skilled in the art has not really applied the aerogel to the heat insulation assembly of the heating assembly.

[0040] In one or more embodiments of the present disclosure, the heat insulation assembly 2 includes the first heat insulation layer 41 arranged on the periphery of the heating assembly 2 and the second heat insulation layer 42 arranged on the periphery of the first heat insulation layer 41. The first heat insulation layer 41 employs the aerogel having a higher heat-resistance temperature, and the second heat insulation layer 42 employs the aerogel having lower thermal conductivity and a more desirable heat insulation effect. The heat insulation assembly 4 bears a high-temperature environment formed by the heating assembly 2 through high-temperature resistance of the first heat insulation layer 41. Through the heat insulation attribute of the first heat insulation layer 41, the high temperature can be stopped outside the second heat insulation layer 42, so that the second heat insulation layer 42 can be prevented from being burnt due to the high temperature. To be specific, the first heat insulation layer 41 can provide a suitable working environment for the second heat insulation layer 42. Lower thermal conductivity and a more desirable heat insulation effect of the second heat insulation layer 42 can prevent outward heat loss. Thus, energy can be effectively saved on, and the temperature of the surface of the housing 5 can be prevented from being excessively high. The heat insulation assembly 4 is provided with a plurality of aerogel layers. In a case of an identical total thickness, the plurality of aerogel layers have a more desirable heat insulation effect. In a case of an identical heat insulation effect, the plurality of aerogel layers make the total thickness smaller, and thus the requirement on miniaturization of the aerosol generation device can be satisfied.

[0041] With reference to FIG. 2 and FIG. 3, the first heat insulation layer 41 may be rolled into a first tubular body, and the second heat insulation layer 42 may be rolled into a second tubular body. The accommodation cavity extends in a longitudinal direction. The first heat insulation layer 41 and the second heat insulation layer 42 may have an identical longitudinal extension length, so that the first tubular body formed and the second tubular body formed have an identical longitudinal length. The longitudinal length of the first tubular body and the longitudinal length of the second tubular body may be greater than or equal to the longitudinal extension length of the accommodation cavity. Thus, the first heat insulation layer 41 and the second heat insulation layer 42 that perform complete heat insulation on the accommodation cavity extend in a length direction while extending in the longitudinal direction. The length direction is a direction orthogonal to the longitudinal direction.

[0042] In a process of rolling the first heat insulation layer into the first tubular body, two side edges, oppositely arranged in the length direction, of the first heat insulation layer 41 abut against each other, so that a first joint 411 is formed on a side surface of the first tubular body, and the first tubular body has an even thickness and is of a single-layer structure on the whole. In a process of rolling the second heat insulation layer into the second tubular body, two side edges, oppositely arranged in the length direction, of the second heat insulation layer 42 abut against each other, so that a second joint 421 is formed on a side surface of the second tubular body, and the second tubular body has an even thickness and is of a single-layer structure on the whole.

[0043] In an embodiment, with reference to FIG. 2, the first joint 411 and the second joint 421 are staggered from each other. The first joint 411 corresponds to the side surface of the second tubular body in the second heat insulation layer 42, and the second joint 421 corresponds to the side surface of the first tubular body in the first heat insulation layer 41. Compared with a case where the first joint is aligned with the second joint, the first joint 411 and the second joint 421 are staggered to be prevented from being opened. Thus, the two opposite side edges of the first heat insulation layer 41 keep abutting against each other, and the two opposite side edges of the second heat insulation layer 42 keep abutting against each other. Moreover, the first tubular body and the second tubular body maintain the tubular shape, and the heat insulation assembly 4 can be formed more efficiently and stably.

[0044] In view of the above, in an embodiment, with reference to FIG. 3, before the first tubular body and the second tubular body are formed, the first heat insulation layer 41 and the second heat insulation layer 42 are basically flattened. The first heat insulation layer 41 and the second heat insulation layer 42 may be superposed in a staggered manner in a thickness direction. To be specific, in the thickness direction, the first heat insulation layer 41 and the second heat insulation layer 42 partially overlap. The end (for example, the left end), farthest away from an overlapping region, of the first heat insulation layer 41 is staggered from the second heat insulation layer 42. Moreover, the end (for example, the right end), farthest away from the overlapping region, of the second heat insulation layer 42 is staggered from the first heat insulation layer 41. The surface, facing the second heat insulation layer 42, of the first heat insulation layer 41 may be coated with a backing adhesive or a high-temperature adhesive, or a surface, facing the first heat insulation layer 41, of the second heat insulation layer 42 may be coated with a backing adhesive or a high-temperature adhesive. Thus, when the first heat insulation layer 41 and the second heat insulation layer 42 are rolled, so that the two opposite side edges of the first heat insulation layer 41 in the length direction abut against each other, and the two opposite side edges of the second heat insulation layer 42 in the length direction abut against each other, the first joint 411 and the second joint 421 are staggered from each other. When the surface of the first heat insulation layer 41 or the surface of the second heat insulation layer 42 has the backing adhesive or the high-temperature adhesive, the two side edges, used for forming the first joint 411, of the first heat insulation layer 41 are fixed by the second heat insulation layer 42, so that the first joint 411 cannot be opened. The two side edges, used for forming the second joint 421, of the second heat insulation layer 42 are fixed by the first heat insulation layer 41, so that the second joint 421 cannot be opened.

[0045] When the aerosol generation article 1 is heated by the heating assembly 2, a temperature field of the accommodation cavity may be unevenly distributed, or a temperature on the heating assembly 2 may be unevenly distributed. To prevent overheating caused by local heat accumulation of the heat insulation assembly 4, the heat insulation assembly 4 further includes a heat uniformization layer 43. The thermal conductivity of the heat uniformization layer 43 is greater than the thermal conductivity of the first heat insulation layer 41 and the second heat insulation layer 42. The heat uniformization layer 43, the first heat insulation layer 41, and the second heat insulation layer 42 are stacked, and at least one of the first heat insulation layer 41 and the second heat insulation layer 42 is in contact with the heat uniformization layer 43. Under the action of the heat uniformization layer 43, heat can be evenly distributed in the heat insulation layer, in contact with the heat uniformization layer 43, of the first heat insulation layer 41 and the second heat insulation layer 42. Thus, damage to the heat insulation layer due to an excessively-high local temperature can be avoided.

[0046] In an embodiment, a material of the heat uniformization layer 43 may be one or any combination of metal foil, graphite sheet, and a graphene sheet. The metal foil 43 may include copper foil or aluminum foil. In an embodiment, thermal conductivity of the material for making the heat uniformization layer 43 may be 200 W / (m K)-1600 W / (m K). In an embodiment, a thickness of the heat uniformization layer 43 may be 0.015 mm-0.5 mm.

[0047] The copper foil and the aluminum foil have high thermal conductivity. The thermal conductivity of the copper foil is approximately 401 W / (m K), and the thermal conductivity of the aluminum foil is approximately 237 W / (m K). With high specific heat capacities, the copper foil and the aluminum foil can store a particular amount of heat and prevent the heat from being further transferred outwards. The specific heat capacity of the copper foil is approximately 385 J / (kg K), and the specific heat capacity of the aluminum foil is approximately 897 J / (kg K). Thus, the copper foil and the aluminum foil is used for heat uniformization and heat storage. A thickness of the copper foil, the aluminum foil, etc. may be 0.05 mm-0.5 mm. More specifically, the thickness of the copper foil, the aluminum foil, etc. may be 0.1 mm-0.2 mm. The thermal conductivity of the graphite sheet and the graphene sheet is greater than the thermal conductivity of the copper foil, the aluminum foil, etc. The thermal conductivity of the graphite sheet and the graphene sheet may be 1000 W / (m K)-1600 W / (m K). A thickness of the graphite sheet and the graphene sheet may be 0.015 mm-0.1 mm. Specifically, the thickness of the graphite sheet and the graphene sheet may be 0.17 mm-0.07 mm. Also, an areal density of the graphite sheet and the graphene sheet may be less than or equal to 2 g / m2. The heat uniformization layer includes the graphite sheet and the graphene sheet. Thus, the aerosol generation device is lightweighted and miniaturized, and the heat uniformization layer has a very good heat uniformization effect.

[0048] The heat uniformization layer 43 may include a third tubular body, and the third tubular body may be a metal tube, a graphene tube, a graphite tube, etc. The third tubular body may have no joint on a side surface. The third tubular body may be formed by rolling a third sheet 432.

[0049] In an embodiment, the heat uniformization layer is arranged on an inner side of the first heat insulation layer (not shown in the figure). To be specific, the first heat insulation layer is located between the heat uniformization layer and the second heat insulation layer. In an embodiment, the heat uniformization layer is arranged on an outer side of the second heat insulation layer (not shown in the figure). To be specific, the second heat insulation layer is located between the heat uniformization layer and the first heat insulation layer. In an embodiment, with reference to FIG. 2, the heat uniformization layer 43 is arranged between the first heat insulation layer 41 and the second heat insulation layer 42. Thus, the heat uniformization layer 43 is in contact with the first heat insulation layer 41 and the second heat insulation layer 42 simultaneously.

[0050] In a case where the heat uniformization layer 43 is located between the first heat insulation layer 41 and the second heat insulation layer 42, when the first heat insulation layer 41, the second heat insulation layer 42, and the heat uniformization layer 43 are unrolled, in the embodiment shown in FIG. 3, the first aerogel 412 and the second aerogel 422 are fixed to two opposite surfaces of the third sheet 432 respectively. The first aerogel 412 and the second aerogel 422 may be fixedly connected to the third sheet 432 through the high-temperature adhesive. To be specific, the first aerogel 412 may be bonded to the third sheet 432 through the high-temperature adhesive, and the second aerogel 422 may be bonded to the third sheet 432 through the high-temperature adhesive. Thus, the first aerogel 412, the second aerogel 422, and the third sheet 432 may be rolled simultaneously, and the heat insulation assembly 4, the first tubular body, the second tubular body, and the third tubular body may be formed simultaneously. Accordingly, manufacturing of the heat insulation assembly 4 can be simplified. In the presence of an external heating assembly, the first aerogel 412, the second aerogel 422, and the third sheet 432 may be wrapped around an outer surface of the external heating assembly simultaneously, and then rolled around the external heating assembly, and finally formed into the first tubular body, the second tubular body, and the third tubular body that surround the external heating assembly simultaneously.

[0051] To fully uniformize heat of the first aerogel 412 and the second aerogel 422, with reference to FIG. 3, the surface, facing the third sheet 432, of the first aerogel 412 is completely in surface contact with the third sheet 432, and the surface, facing the third sheet 432, of the second aerogel 422 is completely in surface contact with the third sheet 432.

[0052] Given that the first joint 411 on the first tubular body and the second joint 421 on the second tubular body are staggered from each other, with reference to FIG. 2 and FIG. 3, a length of the first aerogel 412 and a length of the second aerogel 422 are less than a length of the third sheet 432. In a length direction of the third sheet 432, the first aerogel 412 and the second aerogel 422 are aligned with two opposite ends of the third sheet 432 respectively. In a thickness direction, the first aerogel 412 and the second aerogel 422 only partially overlap.

[0053] When the first aerogel 412, the second aerogel 422, and the third sheet 432 are rolled into the tubular shape, two opposite side edges of the first aerogel 412 in the length direction abut against each other, two opposite side edges of the second aerogel 422 in the length direction abut against each other, and two opposite sides of the third sheet 432 in the length direction overlap each other. Thus, a self-overlapping region 431 is formed on the third tubular body, part of the third tubular body is of a single-layer structure, and a remaining part of the third tubular body is of a double-layer structure. To be specific, a thickness of the third tubular body is uneven. The two sides, overlapping each other, of the third sheet 43 are bonded to each other. To be specific, two edges, used for forming the overlapping region 431, of the third sheet 432 are in surface contact, and the two contact surfaces are not separated from each other by being bonded to each other.

[0054] When the heat insulation assembly 4 is manufactured, first, the first aerogel 412 and the second aerogel 422 may be bonded to the two opposite surfaces of the third sheet 432 respectively. Specifically, the first aerogel 412 and the second aerogel 422 are aligned with the two opposite ends of the third sheet 432 in the length direction respectively, and the first aerogel 412 and the second aerogel 422 only partially overlap in the thickness direction. Then, the first aerogel 412, the second aerogel 422, and the third sheet 432 are rolled simultaneously, so that portions of the third sheet 432, not bonded to the first aerogel 412 and the second aerogel 422, i.e. the portions of the third sheet 432, located on the two opposite surfaces and the two opposite sides in the length direction, overlap each other in the thickness direction. At least one of the two portions, not bonded to the first aerogel 412 and the second aerogel 422, of the third sheet 432 is coated with the backing adhesive or the high-temperature adhesive, so that the two portions can be bonded to each other while overlapping each other. Thus, when the third sheet 432 is rolled into the third tubular body having a partially-overlapping side surface, the two opposite side edges of the first aerogel 412 abut against each other, and the end, not overlapping the unrolled second aerogel 422, of the first aerogel 412 is bonded to one overlapping portion of the third sheet 432, so that the first joint 411 formed cannot be opened. Moreover, the two opposite side edges of the second aerogel 422 abut against each other, and the end, not overlapping the unrolled first aerogel 412, of the second aerogel 422 is bonded to the other overlapping portion of the third sheet 432, so that the second joint 421 formed cannot be opened.

[0055] Moreover, when the heating assembly 2 is the external heating assembly, a whole formed by superposing the first aerogel 412, the first aerogel 422, and the third sheet 432 in the thickness direction through bonding may be directly rolled against the external heating assembly. Finally, the two portions, used for overlapping, of the third sheet 432 are bonded to each other, so that the heat insulation assembly 4 is formed. The heat insulation assembly 4 formed is directly combined on the external heating assembly. To prevent the heat insulation assembly 4 from being separated from the external heating assembly, an external surface of the external heating assembly or an inner-side surface of the first aerogel 412 may be coated with the high-temperature adhesive or the backing adhesive. Certainly, a polyimide (PI) tape may also be wrapped around a periphery of the heat insulation assembly 4, so as to bind the heat insulation assembly 4 to the periphery of the heating assembly.

[0056] The first aerogel 412, the second aerogel 422, and the third sheet 432 may have an identical longitudinal length, but which is optional rather than mandatory. In some embodiments, a longitudinal length of the third sheet 432 is greater than a longitudinal length of the first aerogel 412 and the second aerogel 422.

[0057] In a process of heating the aerosol generation article by the heating assembly, the heat insulation assembly has its own temperature increased while performing heat insulation on the accommodation cavity, and the temperature of the heat insulation assembly is higher than an environment temperature. After the heating assembly stops heating, the heat insulation assembly can maintain its own temperature for a period of time. When a temperature of the heat insulation assembly is higher than the environment temperature, a temperature of the accommodation cavity is generally higher than or equal to the temperature of the heat insulation assembly, and the temperature of the heat insulation assembly has a mapping relationship with the temperature of the accommodation cavity. Thus, after the heating assembly stops heating, the temperature of the accommodation cavity may be deduced according to the temperature of the heat insulation assembly. In an embodiment, with reference to FIG. 4, the aerosol generation device further includes a first temperature measurer 61. The first temperature measurer 61 is used for measuring a temperature of the heat insulation assembly 4. The first temperature measurer 61 is connected to the control circuit in the power supply assembly 3. The controller on the control circuit has a heating curve for performing heating control on the heating assembly 2. The control circuit acquires the temperature of the heat insulation assembly 4 through the first temperature measurer 61, and invokes different heating curves based on the temperature of the heat insulation assembly 4, so as to control a current, a voltage, electric power, or energy output to the heating assembly 2. Thus, the heating assembly 2 generates heat according to the corresponding heating curve. In an example, when the temperature of the heat insulation assembly 4 measured by the first temperature measurer 61 is a first temperature, the controller controls the heating assembly 2 to generate heat through a first heating curve. When the temperature of the heat insulation assembly 4 measured by the first temperature measurer 61 is a second temperature, the controller controls the heating assembly 2 to generate heat through a second heating curve. The first temperature is different from the second temperature, and the first heating curve is different from the second heating curve. In a further example, the first temperature is lower than the second temperature. To be specific, when the heating assembly 2 is re-activated for heating, a start temperature of the heating assembly 2 is different. Thus, preheating time in the second heating curve is shorter than preheating time in the first heating curve. Certainly, the above example is not intended for limitation.

[0058] The first temperature measurer 61 may be connected to the heat uniformization layer 43. To be specific, a temperature of the heat uniformization layer 43 may be used for denoting the temperature of the heat insulation assembly 4. The first temperature measurer 61 may be a thermocouple, including a first thermocouple wire and a second thermocouple wire that are made of different materials. The first thermocouple wire and the second thermocouple wire may be welded to the heat uniformization layer 43. Alternatively, one end of the first thermocouple wire and one end of the second thermocouple wire may be connected to each other, and then bonded to the heat uniformization layer 43.

[0059] In an embodiment, with reference to FIG. 4, the first temperature measurer 61 is located in the self-overlapping region 431 of the heat uniformization layer 43, and the first temperature measurer 61 is connected to the two opposite sides, forming the self-overlapping region 431, of the third sheet 432 in the length direction simultaneously.

[0060] In an embodiment, with reference to FIG. 5, the heating module further includes a second temperature measurer 62, and the second temperature measurer 62 is used for measuring a temperature of the heating assembly 2. The second temperature measurer 62 may be connected to the control circuit in the power supply assembly 3, and is used for feeding back the temperature of the heating assembly 2 to the control circuit. The control circuit may adjust a current, a voltage, electric power, or energy output to the heating assembly 2 according to the temperature fed back by the second temperature measurer 62, so as to adjust a heating temperature of the heating assembly 2.

[0061] With reference to FIG. 5, the heating module further includes a wire manager 7. The wire manager 7 may be used for organizing a wire 63, etc. electrically connected to the heating assembly 2, so as to enable the wire, etc. to be ordered.

[0062] In an embodiment, a lead of the first temperature measurer 61 and a lead of the second temperature measurer 62 are connected to the wire manager 7. One end of the lead is combined on the wire manager 7, and at least part of the end, combined on the wire manager 7, of the lead is exposed to air. When the first temperature measurer 61 and the second temperature measurer 62 are the thermocouples, the above leads are thermocouple wires, so that the leads belong to the temperature measurers. The end, electrically connected to the heating assembly 2, of the wire 63 is combined on the wire manager 7, and at least part of the end, combined on the wire manager 7, of the wire 63 is exposed to air. To be specific, one end of the lead and one end of the wire 63 may be gathered on a same wire manager 7, and become ordered and neat through the wire manager 7.

[0063] The wire manager 7 may be used for electrically connecting the wire 63, etc. electrically connected to the heating assembly 2 to the circuit board 32.

[0064] In an embodiment, the wire manager 7 may be combined with the circuit board 32. The wire manager 7 may be plugged into a corresponding position of the circuit board 32 or unplugged from a corresponding position of the circuit board 32 in a plugging manner. The wire manager 7 may be stably combined with the circuit board 32 through riveting, and is kept at a corresponding position on the circuit board 32. The wire manager 7 may also be combined with the circuit board 32 in another manner, which is not listed in sequence herein.

[0065] When the wire manager 7 is combined with the circuit board 32, the lead and the wire 63 are electrically connected to the control circuit on the circuit board 32. Specifically, at least part of the end, combined on the wire manager 7, of the lead and at least part of the end, combined on the wire manager, of the wire 63 are exposed to air. When the wire manager 7 is combined with the circuit board 32, the part, exposed to the air, of the lead and the part, exposed to the air, of the wire 63 may abut against corresponding gold fingers, elastic metal sheets, etc. on the circuit board 32, so that the lead and the wire 63 are electrically connected to the circuit board 32. Thus, the wire manager 7 may simplify the connection between the first temperature measurer 61, the second temperature measurer 62, as well as the heating assembly 2, and the control circuit, and can prevent the lead and the wire 63 from being disordered and knotted.

[0066] With reference to FIG. 5, the wire manager 7 may be a block-shaped plastic member. Thus, the wire manager 7 has great hardness, and thus can bear a pressing acting force or a riveting acting force that makes the wire manager be combined with the circuit board 32. A plurality of through holes may be provided on the wire manager 7 and penetrate two opposite side surfaces of the wire manager. One end of the lead and one end of the wire 63 are partially located in the through holes, and remaining parts thereof penetrate the through holes to be exposed outside the through holes. In an example, a hole diameter of the through holes is slightly greater than or equal to a wire diameter of the lead and the wire 63. Thus, the lead and the wire 63 can be easily plugged into the corresponding through holes. In an example, the wire manager 7 may be directly formed on one end of the lead and one end of the wire 63 through injection molding.

[0067] When the wire manager 7 is combined with the circuit board 32, the portion, penetrating the through hole to be exposed outside the through hole, of the lead and the portion, penetrating the through hole to be exposed outside the through hole, of the wire 63 abut against an electrical connector on the circuit board 32, so as to be electrically connected to the circuit board 32. In other embodiments, the wire manager forms a plug (not shown in the figure). The wire manager includes metal connectors arranged corresponding to the lead and the wire, and plastic members used for fixing the metal connectors. One end of the lead and one end of the wire are electrically connected to the corresponding metal connectors on the plastic members. Then, the lead and the wire are electrically connected to the circuit board by plugging at least parts of the metal connectors into corresponding positions of the circuit board.

[0068] In an embodiment, with reference to FIG. 6, the heating assembly 2 further includes a heating tube 21 and an upper end cap 22. The heating tube 21 defines the accommodation cavity for accommodating at least part of the aerosol generation article 1, and the upper end cap 22 is connected to an upper end of the heating tube 21. An inner side of the upper end cap 22 may be provided with a first protrusion 221. When the aerosol generation article 1 is inserted into the accommodation cavity, the first protrusion 221 abuts against the aerosol generation article 1 to clamp the aerosol generation article 1, so as to keep the aerosol generation article 1 in the accommodation cavity. An outer side of the upper end cap 22 may further be provided with a second protrusion 222. The second protrusion 222 is used for being clamped into a fixing support of the aerosol generation device. Thus, the heating assembly 2 can be fixed in the housing 5. Moreover, the heating assembly 2 can be prevented from rotating.

[0069] In the embodiment shown in FIG. 7, an upper sealing member 23 may be further arranged between the heating tube 21 and the upper end cap 22. The upper sealing member 23 is used for providing the sealing connection between the heating tube 21 and the upper end cap 22.

[0070] In an embodiment, with reference to FIG. 6, the heating assembly 2 includes a lower end cap 24. The lower end cap 24 is connected to a lower end of the heating tube 21. A lower sealing member may be further arranged between the heating tube 21 and the lower end cap 24. The lower sealing member is used for providing the sealing connection between the heating tube and the lower end cap 24. An outer side of the lower end cap 24 is provided with a third protrusion 241. The third protrusion 241 is used for being clamped into the fixing support of the aerosol generation device. Thus, the heating assembly 2 can be fixed in the housing 5. Moreover, the heating assembly 2 can be prevented from rotating. In the embodiment shown in FIG. 7, the lower end of the heating tube 21 is provided with a nick 25. An inner side of the lower end cap 24 may be provided with a fourth protrusion. The lower end of the heating tube 21 is inserted into the lower end cap 24, and the fourth protrusion is clamped into the nick 25. Thus, the heating tube 21 can be prevented from rotating relative to the lower end cap 24.

[0071] The heat insulation assembly 4 may be arranged only on the periphery of the heating tube 21. The heat insulation assembly 4 may be arranged on the periphery of the upper end cap 22 and the periphery of the lower end cap 24 simultaneously. Through heat insulation by the heat insulation assembly 4, a temperature in the lower end cap 24 is high. Thus, the aerosol can be prevented from being condensed inside the lower end cap 24.

[0072] In an example, the heating tube 21 may generate heat automatically. In an example, the heating tube 21 may not generate heat automatically. A heat generation wire may be wound around the heating tube. A heat generation mesh, a heat generation sheet, or a heat generation circle may also be arranged on the heating tube. A discovery line may also be printed, applied, or disposed on the heating tube.

[0073] The heating tube 21 may be a metal tube or a ceramic tube, which is not limited herein.

[0074] In an example, with reference to FIG. 7, the heat insulation assembly 4 is located on the periphery of the heating tube 21 and spaced from the heating tube 21. Thus, an air layer 8 is arranged between the heat insulation assembly 4 and the heating tube 21, and the air layer 8 also takes a role of heat insulation.

[0075] According to the above heating module and aerosol generation device, the two opposite side edges of the first heat insulation layer abut against each other, so that the first tubular body formed is even in thickness and free of the overlapping region. The two opposite side edges of the second heat insulation layer abut against to each other, so that the second tubular body formed is even in thickness and free of the overlapping region. Thus, the heat insulation assembly having the even thickness is formed. The two opposite side edges of the first heat insulation layer abut against each other, so that the first joint is formed on the side surface of the first tubular body. The two opposite side edges of the second heat insulation layer abut against each other, so that the second joint is formed on the side surface of the second tubular body. The first j oint and the second j oint are staggered from each other, and thus the first joint corresponds to an intact portion of the side surface of the second tubular body, and the second joint corresponds to an intact portion of the side surface of the first tubular body. Compared with a case where the first joint is aligned with the second joint, the two opposite side edges of the first heat insulation layer keep abutting against each other, and the two opposite side sedge of the second heat insulation layer keep abutting against each other, and thus the heat insulation assembly can be formed more efficiently and stably.

[0076] It should be noted that the description and the accompanying drawings of the present disclosure illustrate preferred embodiments of the present disclosure, but the present disclosure is not limited to the embodiments described in the description. Further, a person of ordinary skill in the art can make improvements or modifications according to the above descriptions, and all these improvements and modifications should fall within the scope of protection of the appended claims of the present disclosure.

Claims

1. A heating module, comprising: a heating assembly configured to heat an aerosol generation article; and a heat insulation assembly arranged on a periphery of the heating assembly and comprising a first heat insulation layer and a second heat insulation layer, wherein the second heat insulation layer is located on a periphery of the first heat insulation layer, wherein two opposite side edges of the first heat insulation layer abut against each other, so as to form a first tubular body having a first joint on a side surface; two opposite side edges of the second heat insulation layer abut against each other, so as to form a second tubular body having a second joint on a side surface; and the first joint and the second joint are staggered.

2. The heating module according to claim 1, wherein the heat insulation assembly further comprises a heat uniformization layer, the heat uniformization layer comprises two opposite surfaces, the first heat insulation layer and the second heat insulation layer are fixed to the two surfaces respectively, and the first heat insulation layer, the second heat insulation layer, and the heat uniformization layer are rolled jointly to form the heat insulation assembly.

3. The heating module according to claim 2, wherein the first heat insulation layer and the second heat insulation layer are fixedly bonded to the heat uniformization layer.

4. The heating module according to claim 2, wherein in a case where the heat insulation assembly is unrolled, the first heat insulation layer and the second heat insulation layer are aligned with two opposite ends of the heat uniformization layer in a length direction of the heat uniformization layer respectively; and in a case where the heat insulation assembly is unrolled, the first heat insulation layer and the second heat insulation layer only partially overlap in a thickness direction of the heat uniformization layer.

5. The heating module according to claim 2, wherein two opposite sides of the heat uniformization layer overlap each other, so as to form the heat uniformization layer into a partially-overlapping third tubular body.

6. The heating module according to claim 5, wherein the two opposite sides of the heat uniformization layer keep overlapping each other through bonding, and the heat insulation assembly is configured to be formed in a case where the two opposite sides of the heat uniformization layer overlap each other.

7. The heating module according to claim 5, wherein a thickness of the heat uniformization layer is far less than a thicknesses of the first heat insulation layer and a thickness of the second heat insulation layer, such that a thickness of the heat insulation assembly is approximately even.

8. The heating module according to claim 2, wherein a thickness of the heat uniformization layer is 0.015 mm-0.5 mm; or a thickness of the first heat insulation layer is 0.3-2.0 mm and / or a thickness of the second heat insulation layer is 0.3 mm-2.0 mm.

9. A heating module, comprising: a heating assembly configured to heat an aerosol generation article; and a heat insulation assembly arranged on a periphery of the heating assembly and comprising a first heat insulation layer and a second heat insulation layer, wherein the second heat insulation layer is located on a periphery of the first heat insulation layer, wherein the first heat insulation layer comprises a first aerogel, and the second heat insulation layer comprises a second aerogel; and a fire retardant in the first aerogel is different from a fire retardant in the second aerogel, such that a heat-resistance temperature of the first heat insulation layer is higher than a heat-resistance temperature of the second heat insulation layer.

10. The heating module according to claim 9, wherein the first aerogel comprises teflon, and the second aerogel comprises melamine.

11. The aerosol generation device according to claim 9, wherein thermal conductivity of the first heat insulation layer is higher than thermal conductivity of the second heat insulation layer.

12. The aerosol generation device according to claim 11, wherein the thermal conductivity of the first heat insulation layer is 0.020 W / (m K)-0.026 W / (m K); and / or the thermal conductivity of the second heat insulation layer is 0.014 W / (m K)-0.020 W / (m K).

13. The aerosol generation device according to claim 9, wherein a heat-resistance temperature of the first heat insulation layer is greater than 250°C; or a heat-resistance temperature of the second heat insulation layer is less than 220°C.

14. The heating module according to claim 9, wherein a thickness of the second heat insulation layer is less than a thickness of the first heat insulation layer.

15. The heating module according to claim 9, wherein the heat insulation assembly further comprises a heat uniformization layer, thermal conductivity of the heat uniformization layer is higher than thermal conductivity of the first heat insulation layer and thermal conductivity of the second heat insulation layer, and the heat uniformization layer is in contact with at least one of the first heat insulation layer and the second heat insulation layer, so as to enable heat to be evenly distributed on the heat insulation layer or layers in contact with the heat uniformization layer.

16. The heating module according to claim 15, wherein the heat uniformization layer comprises at least one of copper foil, aluminum foil, a graphite sheet, or a graphene sheet.

17. The heating module according to claim 15, wherein thermal conductivity of a material of the heat uniformization layer is 200 W / (m K)-1600 W / (m K).

18. The heating module according to claim 15, further comprising: a temperature measurer, wherein the temperature measurer is used for measuring a temperature of the heat insulation assembly; and the temperature measurer is connected to the heat uniformization layer.

19. The heating module according to claim 15, wherein the heat uniformization layer, the first heat insulation layer, and the second heat insulation layer extend in a longitudinal direction of an accommodation cavity, and the heat uniformization layer, the first heat insulation layer, and the second heat insulation layer have an identical longitudinal extension length.

20. An aerosol generation device, comprising the heating module according to any one of claims 1 to 19, and further comprising a power supply assembly, wherein the power supply assembly is electrically connected to the heating module, to supply electricity to the heating assembly for heating an aerosol generation article.

Images