Aerosol-generating device

Abstract

The present application relates to an aerosol-generating device comprising: a first module comprising a first housing and a thermally conductive element having a thermal conductivity of at least 1 W / (m.k); the second module comprises a second shell, a containing cavity is formed in the inner side of the second shell, and the containing cavity can contain at least part of the aerosol generating product; the heating element is used for heating the aerosol generating product to generate aerosol, at least part of the heating element is surrounded by the second shell, and the heating element and the heat conduction element are arranged in a spaced mode; at least part of the heat conduction element is located between the second shell and the heating element, and the thermal resistance between the heat conduction element and the first shell is smaller than that between the heat conduction element and the second shell.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and particularly to an aerosol generating device. Background Art

[0002] An aerosol generating device is a device that can generate an aerosol for a user to inhale when an aerosol generating article is heated without being burned. In some exemplary prior arts, there is an aerosol generating device including a heating element and a housing. At least a part of the aerosol generating article can be inserted into the interior of the housing and thus be heated by the heating element located inside the housing. However, when the heating element is heating, its temperature is not lower than 200 °C, so that the part of the housing surrounding the heating element has a relatively high temperature, resulting in an excessively high local temperature of the housing and bringing an unpleasant experience to the user when the user holds it. Summary of the Utility Model

[0003] The purpose of the present application is to provide an aerosol generating device that can prevent the local temperature of the housing from being excessively high.

[0004] At least one embodiment of the present application provides an aerosol generating device, which includes:

[0005] A first module, including a first housing and a heat conducting element with a thermal conductivity of at least 1 W / (m·k); and

[0006] A second module, including a second housing, an accommodation cavity is arranged inside the second housing, and at least a part of the aerosol generating article can be accommodated in the accommodation cavity; and

[0007] A heating element for heating the aerosol generating article to generate an aerosol, at least a part of the heating element is surrounded by the second housing, and the heating element is arranged at an interval from the heat conducting element;

[0008] Wherein, at least a part of the heat conducting element is located between the second housing and the heating element, and the thermal resistance between the heat conducting element and the first housing is smaller than the thermal resistance between the heat conducting element and the second housing.

[0009] As an example, the first module further includes a guiding part, the thermal conductivity of the guiding part is smaller than that of the heat conducting element, and the heat conducting element includes a first part and a second part connected to each other;

[0010] The first part is located between the second housing and the heating element, and at least a part of the guiding part is located between the first part and the second housing; the second part is adjacent to the first housing.

[0011] As an example, the heating element is fixed on the first module, and the second module is configured to be movable between a first position and a second position along the guiding portion. When the second module is at the first position, the first portion is located between the second housing and the heating element, and at least a part of the guiding portion is located between the first portion and the second housing;

[0012] Wherein, the depth at which the heating element is inserted into the accommodation cavity when the second module is at the first position is greater than the depth at which the heating element is inserted into the accommodation cavity when the second module is at the second position.

[0013] As an example, when the second module is at the second position, the first module remains connected to the second module, and at least a part of the heating element is exposed.

[0014] As an example, the second module further includes a receiving tube disposed inside the second housing. The accommodation cavity is located in the receiving tube. The proximal end of the receiving tube is open for the aerosol-generating article to be inserted into the accommodation cavity, and the distal end of the receiving tube has a base for supporting the bottom of the aerosol-generating article;

[0015] When the second module is at the first position, the heating element is hidden and at least a part of the heating element passes through the base and is located in the accommodation cavity;

[0016] There is a heat insulation layer between the receiving tube and the second housing.

[0017] As an example, there are multiple guiding portions and multiple first portions, and at least one guiding portion is disposed between each first portion and the second housing; wherein

[0018] At least a part of the heat insulation layer is located between two adjacent guiding portions; or

[0019] When the second module is at the first position, the heat insulation layer and the multiple guiding portions surround the receiving tube.

[0020] As an example, the second module further includes a bracket connecting the receiving tube. A slide rail is provided on one of the bracket and the guiding portion, and a slider is provided on the other. The slider is configured to be slidable along the slide rail and is stopped when sliding to the end of the slide rail to prevent the second module from detaching from the first module.

[0021] As an example, the first module further includes a fixing portion. The thermal conductivity of the fixing portion is less than the thermal conductivity of the heat conducting element. The heating element is fixed on the fixing portion, and the second portion connects the fixing portion.

[0022] As an example, the second part is located in the first housing, the fixing part is connected to the first housing, and the fixing part is located between the second part and the second module.

[0023] As an example, the aerosol generating device further includes a reset assembly, the reset assembly connects the first module and the second module, and the reset assembly is configured to automatically reset the second module to the first position.

[0024] As an example, the first module further includes a sealing plug and a guiding part with a cavity, and a connection hole is provided on the wall of the guiding part;

[0025] The reset assembly includes a holding part and a first elastic part, the first elastic part connects the holding part and the second module; a part of the holding part passes through the connection hole and is held in the cavity;

[0026] The heat conducting element includes a first part disposed in the cavity, the sealing plug is press-fitted in the cavity, and at least a part of the sealing plug is located between the connection hole and the first part.

[0027] As an example, the heat conducting element further includes a heat conducting layer disposed on the surface of the sealing plug, and the heat conducting layer is in contact with the first part; or

[0028] A part of the sealing plug is nestedly connected to the first part, and the heat conducting element further includes a heat conducting material filled in the gap between the sealing plug and the first part.

[0029] As an example, the proximal end of the second housing has an open mouth, the second module further includes a rotating part, an insertion hole is formed in the rotating part, and the insertion hole is configured to allow the aerosol generating article to be inserted into the accommodation cavity;

[0030] Wherein, a part of the rotating part is hidden in the second housing, and a part is exposed through the open mouth, and the rotation is configured to be rotatable relative to the second housing to hide or expose the insertion hole by rotation.

[0031] The aerosol generating device provided by the above embodiments includes a heating element, a first module, and a second module; the first module includes a first housing and a heat conducting element with a thermal conductivity of at least 1 W / (m·k); the second module includes a second housing, and an accommodation cavity is provided inside the second housing, and the accommodation cavity can accommodate at least a part of the aerosol generating article; the heating element is used to heat the aerosol generating article to generate aerosol, at least a part of the heating element is surrounded by the second housing, and the heating element and the heat conducting element are arranged at intervals; wherein, at least a part of the heat conducting element is located between the second housing and the heating element, and the thermal resistance between the heat conducting element and the first housing is less than the thermal resistance between the heat conducting element and the second housing. Thus, the heat conducting element can absorb part of the heat dissipated by the heating element towards the direction where the second housing is located, and can conduct at least part of the heat it absorbs to the first housing, so that both the heat absorbed by the second housing can be reduced, and at the same time the heat absorbed by the first housing can be increased, making the temperature distribution on the first housing and the second housing uniform, and preventing local overheating on the surface of the aerosol generating device. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0033] Figure 1 It is a schematic diagram of the second module in the first position in the aerosol generating device provided by some embodiments of the present application;

[0034] Figure 2 It is a schematic diagram of the second module in the second position in the aerosol generating device provided by some embodiments of the present application;

[0035] Figure 3 is Figure 1 A cross-sectional view in the A-A direction;

[0036] Figure 4 It is a schematic diagram of the first module and the heating element provided by some embodiments of the present application;

[0037] Figure 5 is Figure 4 A partial cross-sectional view of;

[0038] Figure 6 is Figure 4 An exploded view of;

[0039] Figure 7 is Figure 4 Another exploded view of;

[0040] Figure 8 It is a schematic diagram of a heat conduction element provided by some embodiments of the present application;

[0041] Figure 9 It is a schematic diagram of a bracket provided by some embodiments of the present application;

[0042] Figure 10 It is a schematic diagram of a reset assembly provided by some embodiments of the present application;

[0043] Figure 11 It is a schematic diagram of the positional relationship between a rotating part and a first module provided by some other embodiments of the present application;

[0044] In the figure:

[0045] 100, aerosol generating device;

[0046] 1, first module; 11, first housing; 12, heat conduction element; 121, first part; 122, second part; 13, guiding part; 14, fixing part; 15, first sealing ring; 16, second sealing ring; 17, sealing plug;

[0047] 2, second module; 21, second housing; 22, receiving tube; 221, receiving cavity; 222, bottom support; 23, bracket; 24, rotating part; 241, insertion hole; 25, heat insulation layer; 26, damping member;

[0048] 3, heating element; 31, heating part; 32, base;

[0049] 4, power supply assembly;

[0050] 5, reset assembly; 51, first elastic member;. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0052] The terms "first", "second", and "third" in this application are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship or movement of components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include unlisted steps or units, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0053] The mention of "embodiment" in this context means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0054] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element, or there may be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0055] Please refer to Figures 1 - 11 , some embodiments of this application provide an aerosol generating device 100. The aerosol generating device 100 can be engaged with an aerosol generating article and is capable of providing energy to cause the aerosol generating article to generate an aerosol.

[0056] As used herein, the term "aerosol generating article" refers to an article that can release a volatile substance to form an inhalable aerosol therefrom. The aerosol generating article may include a tobacco-containing material that contains volatile tobacco flavor compounds released from the substrate upon heating. Specifically, the aerosol generating article may be a tobacco-containing aerosol generating article, preferably a solid tobacco-containing aerosol generating article. Alternatively, the aerosol generating article may include a non-tobacco material. The aerosol generating article may also include an aerosol forming agent. Examples of suitable aerosol forming agents are glycerol and propylene glycol.

[0057] Optionally, the aerosol-generating article may contain additional tobacco or non-tobacco volatile flavor compounds that are released when the aerosol-generating article is heated. The aerosol-generating article may also contain microcapsules, such as those containing additional tobacco or non-tobacco volatile flavor compounds, and such microcapsules may melt during heating of the solid aerosol-generating article.

[0058] The aerosol-generating device 100 includes a heating element 3 for heating an aerosol-generating article to cause the aerosol-generating article to generate an aerosol.

[0059] The heating element 3 may include an internal heating element, an external heating element, and / or an air heating element.

[0060] As used herein, the term "external heating element" refers to a heating element that is positioned external to the aerosol-generating article when the aerosol-generating article is engaged with the aerosol-generating device. As used herein, the term "internal heating element" refers to a heating element that is at least partially positioned within the aerosol-generating article when the aerosol-generating article is engaged with the aerosol-generating device. As used herein, the term "air heating element" refers to a heating element for heating air in an air intake passage, through which air enters the aerosol-generating article. The air heating element heats the air flowing through the air intake passage into hot air, which then enters the aerosol-generating article and exchanges heat with the aerosol-generating article to effect heating and baking of the aerosol-generating article. The heating element has one or more, and the one or more heating elements can reach a temperature between about 200 °C and 440 °C, so as to enable the aerosol-generating article to generate an aerosol.

[0061] The heating element 3 may comprise a resistive material, an infrared coating, and / or a susceptor.

[0062] The resistive material can generate Joule heat when an electric current flows through it, and the resistive material can mainly heat the aerosol-generating article by heat conduction. Suitable resistive materials include, but are not limited to: semiconductors, such as doped ceramics, conductive ceramics (such as molybdenum disilicide), carbon, graphite, metals, metal alloys, and composite materials made of ceramic materials and metal materials. Such composite materials may include doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum, and platinum group metals. Examples of suitable metal alloys include stainless steel, Constantan, nickel-containing alloys, cobalt-containing alloys, chromium-containing alloys, aluminum-containing alloys, titanium-containing alloys, zirconium-containing alloys, hafnium-containing alloys, niobium-containing alloys, molybdenum-containing alloys, tantalum-containing alloys, tungsten-containing alloys, tin-containing alloys, gallium-containing alloys, manganese-containing alloys, and iron-containing alloys, as well as nickel-based, iron-based, and cobalt-based superalloys, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys.

[0063] When thermally excited or when an electric current passes through it, the infrared coating can radiate infrared rays, and the infrared coating can mainly heat the aerosol generating article through thermal radiation. The infrared coating can radiate infrared rays with a wavelength of 0.75 μm to 1000 μm, preferably far infrared rays with a wavelength of 1.5 μm to 400 μm, and more preferably far infrared rays with a wavelength of 4 μm to 15 μm.

[0064] As used herein, the term "receptor" refers to a material that can convert electromagnetic energy into heat. When located in a changing electromagnetic field, the eddy current induced in the receptor causes heating of the receptor. In such embodiments, the receptor is designed to engage with an aerosol generating device including a magnetic field generator. The magnetic field generator generates a changing magnetic field to heat the receptor located within the changing magnetic field. In use, the receptor is located within the changing magnetic field generated by the magnetic field generator. Among them, the magnetic field generator is electrically connected to the power supply assembly, and the power supply assembly provides a current for the magnetic field generator to generate a changing magnetic field. The magnetic field generator may include one or more induction coils that generate a changing magnetic field, and the one or more induction coils may surround the receptor. In one embodiment, the aerosol generating device is capable of generating a changing magnetic field between 1 and 30 MHz, such as between 2 and 10 MHz, such as between 5 and 7 MHz. In one embodiment, the aerosol generating device is capable of generating a changing magnetic field having a field strength (H field) between 1 and 5 kA / m, such as between 2 and 3 kA / m, such as approximately 2.5 kA / m.

[0065] Among them, the receptor may include metal or carbon. In one embodiment, the receptor may include a ferromagnetic material, such as ferrite, ferromagnetic steel or stainless steel. In one embodiment, the receptor includes a nickel-iron alloy. In one embodiment, the receptor includes a 400 series stainless steel, and the 400 series stainless steel includes grade 410 or grade 420 or grade 430 stainless steel.

[0066] The heating element 3 may include a helical heating wire, a heating mesh with through holes, a heating tube, a heating rod and / or a heating coating.

[0067] Please refer to Figure 1 and Figure 2 , the aerosol generating device 100 further includes a first module 1 and a second module 2. The first module 1 includes a first housing 11 and a heat conducting element 12. The second module 2 includes a second housing 21, and an accommodation cavity 222 is provided inside the second housing 21, and the accommodation cavity 222 can accommodate at least a part of the aerosol generating article. At least a part of the heat conducting element 12 is located between the second housing 21 and the heating element 3, and the thermal resistance between the heat conducting element 12 and the first housing 11 is less than the thermal resistance between the heat conducting element 12 and the second housing 21.

[0068] The first housing 11 and the second housing 21 may be made of the same material. The first housing 11 and the second housing 21 may be integrally formed, and there may be no obvious boundary between them. In the embodiment as shown in Figure 1 , the first housing 11 and the second housing 21 are independent of each other, and the first housing 11 and the second housing 21 can enclose at least part of the outer surface of the aerosol generating device 100. In the embodiments as shown in Figure 1 and Figure 2 , the first housing 11 and the second housing 21 can move relative to each other away from and closer to each other by the first module 1 moving relative to the second module 2.

[0069] The heat conducting element 12 can absorb part of the heat dissipated by the heating element 3 in the direction of the second housing 21, and can conduct at least part of the heat it absorbs to the first housing 11, so that it can both reduce the heat absorbed by the second housing 21 and increase the heat absorbed by the first housing 11, making the temperature distribution on the first housing 11 and the second housing 21 uniform, and preventing local overheating on the surface of the aerosol generating device 100.

[0070] In order to reduce power consumption and prevent the temperature of the first housing 11 from being too high, the heating element 3 and the heat conducting element 12 are arranged at intervals.

[0071] The thermal conductivity of the heat conducting element 12 is at least 1 W / (m·k), preferably the thermal conductivity of the heat conducting element 12 is at least 10 W / (m·k), and more preferably the thermal conductivity of the heat conducting element 12 is at least 40 W / (m·k). Suitable heat conducting elements 12 include but are not limited to: graphite, graphene, aluminum, copper, zinc, steel, silver, heat conducting polymers or any combination or alloy thereof.

[0072] By making the distance between the heat conducting element 12 and the second housing 21 greater than the distance between the heat conducting element 12 and the first housing 11, the thermal resistance between the heat conducting element 12 and the second housing 21 can be made greater than the thermal resistance between the heat conducting element 12 and the first housing 11.

[0073] By making the heat conducting element 12 arranged at intervals from the second housing 21 and making the heat conducting element 12 contact the first housing 11, the thermal resistance between the heat conducting element 12 and the second housing 21 can be made greater than the thermal resistance between the heat conducting element 12 and the first housing 11.

[0074] A substance with a lower thermal conductivity can be arranged between the heat conducting element and the second housing to make the thermal resistance between the heat conducting element and the second housing greater than the thermal resistance between the heat conducting element and the first housing.

[0075] The contact area between the heat-conducting element 12 and the second housing 21 can be made smaller than the contact area between the heat-conducting element 12 and the first housing 11, so that the thermal resistance between the heat-conducting element 12 and the second housing 21 is greater than the thermal resistance between the heat-conducting element 12 and the first housing 11.

[0076] In some embodiments, reference may be made to Figure 1 and Figure 2 The first module 1 further includes a guiding portion 13, the thermal conductivity of the guiding portion 13 is less than that of the heat-conducting element 12, and the heat-conducting element 12 includes a first portion 121 and a second portion 122 connected to each other; the first portion 121 is located between the second housing 21 and the heating element 3, and at least a part of the guiding portion 13 is located between the first portion 121 and the second housing 21, so that there is at least a guiding portion 13 between the heat-conducting element 12 and the second housing 21; and the second portion 122 is adjacent to the first housing 11. Among them, the second portion 122 being adjacent to the first housing 11 includes that the second portion 122 directly contacts the first housing 11, or includes that although the second portion 122 does not contact the first housing 11, the distance between the second portion 122 and the first housing 11 is less than 5 mm, and preferably this distance is less than 2 mm.

[0077] The thermal conductivity of the guiding portion 13 can be between 0.1 W / (m·K) - 0.5 W / (m·K). The guiding portion 13 can be an injection-molded part. Suitable guiding portions 13 include but are not limited to PAEK-based materials, PI materials or PBI materials. Among them, PAEK-based materials include PEEK, PEKK, PEKEKK or PEK materials.

[0078] The first portion 121 and the second portion 122 can be integrally formed of the same material. For example, the heat-conducting element 12 can be a metal part, and the first portion 121 and the second portion 122 are constituent parts of the metal part. There may be no obvious demarcation line between the first portion 121 and the second portion 122.

[0079] The first portion 121 is arranged between the second housing 21 and the heating element 3. When the heating element 3 dissipates heat to the periphery, at least part of the heat dissipated toward the second housing 21 can be absorbed by the first portion 121. The first portion 121 conducts at least part of the absorbed heat to the second portion 122 through heat conduction, and then the second portion 122 transfers part of the heat to the first housing 11, so as to prevent the temperature of the second housing 21 from being too high and make the distribution of heat on the first housing 11 and the second housing 21 more uniform.

[0080] In some embodiments, not shown, the heating element is fixed to the second module, the second module is configured to be removable from the first module, and during the removal process, the second module can slide along the guiding portion. After the second module and the first module are engaged with each other, the first portion is located between the second housing and the heating element, and at least a part of the guiding portion is located between the first portion and the second housing.

[0081] In some embodiments, the heating element 3 is fixed to the first module 1, the second module 2 is configured to be movable between a first position and a second position along the guiding portion 13, and when the second module 2 is in the first position, the first portion 121 is located between the second housing 21 and the heating element 3, and at least a part of the guiding portion 13 is located between the first portion 121 and the second housing 21; wherein, the depth at which the heating element 3 is inserted into the receiving cavity 221 when the second module 2 is in the first position is greater than the depth at which the heating element 3 is inserted into the receiving cavity 221 when the second module 2 is in the second position. Thus, during the process of the second module 2 moving from the first position to the second position relative to the first module 1, the engagement depth between the heating element 3 and the aerosol-generating article gradually decreases, and the heating element 3 gradually separates from the aerosol-generating article.

[0082] Furthermore, reference may be made to Figure 2 , when the second module 2 is in the second position, the first module 1 and the second module 2 remain connected, and at least a part of the heating element 3 is exposed, so that at least a part of the heating element 3 is visible on the premise that the first module 1 and the second module 2 remain connected. In this example, preferably, the heating element 3 is an internal heating element, so that when the second module 2 is in the second position, cleaning jigs such as a brush or a cotton swab can be used to clean the surface of the internal heating element 3.

[0083] In some embodiments, reference may be made to Figures 1 - 3 , the second module 2 further includes a receiving tube 22 disposed inside the second housing 21, the receiving cavity 221 is located in the receiving tube 22, the proximal end of the receiving tube 22 is open for the aerosol-generating article to be inserted into the receiving cavity 221, and the distal end of the receiving tube 22 has a base 222 for supporting the bottom of the aerosol-generating article; when the second module 2 is in the first position, the heating element 3 is hidden and at least a part of the heating element 3 passes through the base 222 and is located in the receiving cavity 221; there is a heat insulation layer 25 between the receiving tube 22 and the second housing 21.

[0084] On the one hand, during the process of the second module 2 moving from the first position to the second position relative to the first module 1, the aerosol-generating article can move along with it, and the base 222 can keep adjacent to the bottom of the aerosol-generating article, so that during the process of the aerosol-generating article gradually separating from the heating element 3, the aerosol-generating article can be prevented from breaking, and it is helpful to separate the aerosol-generating article from the heating element 3.

[0085] On the other hand, the heat insulation layer 25 can increase the thermal resistance between the receiving tube 22 and the second housing 21, and can prevent the heat of the heating element 3 from dissipating to the second housing 21 when the heating element 3 heats the aerosol generating article inside the receiving tube 22, so that the power consumption of the heating element 3 can be reduced and the efficiency of the heating element 3 for heating the aerosol generating article can be improved.

[0086] The heat insulation layer 25 may include a gas layer. When the second module 2 is in the second position, the gas layer may be open so as to be in communication with the outside. The gas layer may be kept in a sealed state to enhance the heat insulation effect. The gas layer may be a negative pressure layer with an air pressure lower than the atmospheric pressure.

[0087] The heat insulation layer 25 may include a fixed heat insulation layer. Suitable fixed heat insulation layers include but are not limited to: aerogel, felt, foam, fiberglass, glass felt, ceramics, silica, alumina, carbon, and ore, or any combination thereof.

[0088] When the second module 2 is in the first position, at least a part of the guiding portion 13 may be located between the receiving tube 22 and the second housing 21, and / or at least a part of the first portion 121 may be located between the receiving tube 22 and the second housing 21.

[0089] There may be a plurality of guiding portions 13. At least a part of the heat insulation layer 25 may be located between two adjacent guiding portions 13. Or, when the second module 2 is in the first position, the heat insulation layer 25 and the plurality of guiding portions 13 are arranged around the receiving tube 22; for example, when the second module 2 is in the first position, the heat insulation layer 25 and the plurality of guiding portions 13 are arranged on a ring, and the ring surrounds the receiving tube 22; or for example, the heat insulation layer 25 substantially forms a ring, the plurality of guiding portions 13 are arranged on another ring, and when the second module 2 is in the first position, both rings surround the receiving tube 22.

[0090] There may also be a plurality of the first portions 121. At least one guiding portion 13 may be provided between each first portion 121 and the second housing 21. The plurality of first portions 121 and the plurality of guiding portions 13 may be provided in one-to-one correspondence. One guiding portion 13 may be provided corresponding to a plurality of first portions 121. When there are a plurality of first portions 121, reference may be made to Figure 8 , and the plurality of first portions 121 may all be connected to the second portion 122.

[0091] In other embodiments, the guiding portion 13 may be one and configured to be annular. When the second module 2 is in the first position, the annular shape surrounds the periphery of the receiving tube 22. In this embodiment, the first portion 121 may be one or more. When there is one first portion 121, the first portion 121 may be configured to be annular. When there are multiple first portions 121, the multiple first portions 121 may be spaced apart from each other.

[0092] In some embodiments, reference may be made to Figures 1 - 7 , the first module 1 further includes a fixing portion 14, the heating element 3 is fixed on the fixing portion 14, and the second portion 122 is connected to the fixing portion 14.

[0093] The heating element 3 may include a base portion 32 and a heating portion 31 connected to the base portion 32. The base portion 32 is connected to the fixing portion 14. When the second module 2 is in the first position, at least a part of the heating portion 31 is located in the receiving cavity 221. The heating element 3 mainly heats the aerosol generating article through the heating portion 31. When the heating portion 31 is working, the base portion 32 can absorb part of the heat on the heating portion 31 under the action of heat conduction, so that the base portion 32 has a higher temperature. Therefore, the base portion 32 can dissipate heat to the fixing portion 14.

[0094] The fixing portion 14 can prevent the heat on the base portion 32 from being transferred outwards. Preferably, the thermal conductivity of the fixing portion 14 is less than that of the heat conducting element 12. The thermal conductivity of the fixing portion 14 can be between 0.1 W / (m·k) - 0.5 W / (m·k). The fixing portion 14 can be an injection molded part. Suitable fixing portions 14 include but are not limited to PAEK-based materials, PI materials or PBI materials. The fixing portion 14 can be made of the same material as the guiding portion 13. The fixing portion 14 can be connected to the guiding portion 13. The fixing portion 14 and the guiding portion 13 can be integrally injection molded.

[0095] The second portion 122 is connected to the fixing portion 14, so that the second portion 122 can absorb part of the heat on the fixing portion 14, avoiding the accumulation of heat on the fixing portion 14 and causing damage to the fixing portion 14.

[0096] The first portion 121 and the guiding portion 13 can be integrally formed and connected to each other by insert injection molding. The second portion 122 and the fixing portion 14 can be integrally formed and connected to each other by insert injection molding.

[0097] Please refer to Figure 2 , at least a part of the fixing portion 14 is located between the second portion 122 and the heating element 3, so that the second portion 122 is spaced apart from the base portion 32, preventing the second portion 122 from directly absorbing heat from the heating element 3, which helps to reduce power consumption.

[0098] In some embodiments, reference may be made to Figure 1 and Figure 2 , where the second part 122 is located in the first housing 11, the fixing part 14 is connected to the first housing 11, and the fixing part 14 is located between the second part 122 and the second module 2. Thus, heat transfer from the second part 122 to the second module 2 can be blocked.

[0099] When the second module 2 is in the second position, at least a part of the fixing part 14 can be exposed to sight, and the second part 122 is located inside the fixing part 14, so that the second part 122 can be blocked by the fixing part 14, which helps to improve the safety factor and prevent the user from touching the second part 122 and being scalded.

[0100] When the second module 2 is in the first position, at least a part of the fixing part 14 can be arranged facing the bottom support 222 of the receiving tube 22. In some embodiments, when the second module 2 is in the first position, the fixing part 14 supports the bottom support 222 of the receiving tube 22.

[0101] In the embodiment as shown in Figure 2 , the first module 1 further includes a first sealing ring 15. The first sealing ring 15 connects the first housing 11 and the fixing part 14 and provides a seal between the first housing 11 and the fixing part 14 to prevent the aerosol and the condensate formed by the aerosol that overflows or leaks from the accommodation cavity 221 from flowing into the interior of the first module 1 through the gap between the first housing 11 and the fixing part 14.

[0102] The second part 122 is located inside the fixing part 14, and the first sealing ring 15 can be located between the second part 122 and the fixing part 14, so as to protect the second part 122 and prevent the second part 122 from being corroded by the aerosol and its condensate.

[0103] In the embodiment as shown in Figure 2 , the first module 1 further includes a second sealing ring 16. The second sealing ring 16 connects the base part 32 and the fixing part 14 and provides a seal between the base part 32 and the fixing part 14 to prevent the aerosol and the condensate formed by the aerosol that overflows from the accommodation cavity 221 from penetrating into the interior of the first module 1 through the gap between the base part 32 and the fixing part 14. The second part 122 and the base part 32 can be arranged on opposite sides of the second sealing ring 16.

[0104] In some embodiments, reference may be made to Figure 2 , Figure 7 and Figure 9, the second module 2 further includes a bracket 23. One of the bracket 23 and the guiding portion 13 is provided with a slide rail, and the other is provided with a slider. The slider is configured to be slidable along the slide rail and is stopped when sliding to the end of the slide rail to prevent the second module 2 from detaching from the first module 1. Thus, when the second module 2 moves relative to the first module 1 between the first position and the second position, the first module 1 and the second module 2 always remain connected.

[0105] In the embodiment as Figure 9 shown, the slide rail includes a strip-shaped chute 231 provided on the bracket 23. Opposite ends of the strip-shaped chute 231 each have a stop wall, and the two stop walls are respectively a first stop wall 232 and a second stop wall 233. The guiding portion 13 has a slider 131. The slider 131 is fitted in the chute 231 and can slide along the extending direction of the chute 231. The guiding portion 13 has a first interference portion 132 and a second interference portion 133. When the second module 2 is in the first position, reference can be made to Figure 1 , the first interference portion 132 supports the first stop wall 232; when the second module 2 is in the second position, reference can be made to Figure 2 , the second stop wall 233 supports the second interference portion 133.

[0106] The first interference portion 132 can be provided at the end of the guiding portion 13. The first interference portion 132 can be provided at the end of the slider 131 on the guiding portion 13. The second interference portion 133 can be provided at the end of the other end of the slider 131 on the guiding portion 13.

[0107] The bracket 23 is connected to the receiving tube 22. Thus, when the bracket 23 and the guiding portion 13 slide relative to each other, the position of the receiving tube 22 can change, and further the depth of insertion of the heating element 3 into the receiving tube 22 changes accordingly.

[0108] The bracket 23 and the receiving tube 22 can be integrally injection molded.

[0109] In some embodiments, reference can be made to Figure 10 , the aerosol generating device 100 further includes a reset assembly 5. The reset assembly 5 connects the first module 1 and the second module 2. The reset assembly 5 is used to automatically reset the second module 2 to the first position. The reset assembly 5 is beneficial to keeping the second module 2 in the first position and can prevent the second module 2 from moving from the first position to the second position relative to the first module 1 when the heating element 3 heats the aerosol generating article. When moving the second module 2 relative to the first module 1 from the first position to the second position, it is necessary to overcome the resistance provided by the reset assembly 5.

[0110] The reset component 5 may include a first elastic member 51. When the second module 2 is in the second position, the first elastic member 51 has elastic deformation and can provide an elastic force to urge the second module 2 to move from the second position to the first position.

[0111] In the embodiments as Figure 10 and Figure 11 shown, the reset component 5 further includes a holding member 52. The holding member 52 is fixed on the guiding portion 13, and the first elastic member 51 connects the holding member 52 and the second module 2.

[0112] To reduce the volume of the aerosol generating device 100, the first elastic member 51 may include a torsion spring. One elastic arm of the torsion spring is connected to the holding member 52, and the other elastic arm may be connected to the bracket 23. The helical body of the torsion spring may be disposed on the side of the holding member 52 facing the receiving tube 22, for example, between the holding member 52 and the receiving tube 22. The helical body of the torsion spring may be disposed on the side of the holding member 52 facing away from the receiving tube 22, for example, between the holding member 52 and the bracket 23. The axis of the helical body of the torsion spring may be perpendicular to the axis of the receiving tube 22.

[0113] In the embodiments as Figures 5 - 7 shown, the interior of the guiding portion 13 has a cavity, and a connection hole 134 is provided on the wall of the guiding portion 13. A part of the holding member 52 passes through the connection hole 134 and is held in the cavity. Thus, not only can the holding member 52 be stably fixed on the guiding portion 13, but also the volume of the aerosol generating device can be reduced compared to connecting the holding member 52 to the outer wall of the guiding portion 13.

[0114] At least a part of the first portion 121 may be received in the cavity of the guiding portion 13 such that the first portion 121 can be surrounded by the wall of the guiding portion 13. The first module 1 may further include a sealing plug 17. The sealing plug 17 is press-fitted in the cavity, and at least a part of the sealing plug 17 is located between the connection hole 134 and the first portion 121 to prevent the aerosol flowing into the cavity through the connection hole 134 from flowing to the first portion 121. With the mutual cooperation of the guiding portion 13 and the sealing plug 17, the receiving cavity 221 can be isolated from the first portion 121.

[0115] In some embodiments, the heat conducting element 12 further includes a heat conducting layer provided on the surface of the sealing plug 17. The heat conducting layer is in contact with the first portion 121. The heat conducting layer helps to reduce the thermal resistance between the sealing plug 17 and the first portion 121.

[0116] In some embodiments, a part of the sealing plug 17 is nestedly connected to the first part 121, and the heat-conducting element 12 further includes a heat-conducting material filled in the gap between the sealing plug 17 and the first part 121. On the one hand, the heat-conducting material can seal the gap between the first part 121 and the sealing plug 17 to prevent the aerosol and condensate from penetrating into the first module 1 along the gap between the first part 121 and the sealing plug 17; on the other hand, it can reduce the thermal resistance between the sealing plug 17 and the first part 121.

[0117] It should be noted that it is optional rather than necessary to provide a connection hole 134 in the guiding part 13 and allow a part of the holding member 52 to pass through the connection hole 134 and be held in the cavity. In other embodiments, the guiding part 13 may have a cavity inside, and at least a part of the first part 121 can be accommodated in the cavity, but the wall of the guiding part 13 is closed, so as to prevent the aerosol and its condensate from entering the cavity. Therefore, in this embodiment, the sealing plug 17 may not be provided.

[0118] In some embodiments, reference may be made to Figure 1 and Figure 2 , the proximal end of the second housing 21 has an open mouth, and the second module 2 further includes a rotating part 24. An insertion hole 241 is provided in the rotating part 24, and the insertion hole 241 is configured to allow the aerosol-generating article to be inserted into the accommodation cavity 221; wherein, a part of the rotating part 24 is hidden in the second housing 21 and a part is exposed through the open mouth, and the rotation is configured to be rotatable relative to the second housing 21 to hide or expose the insertion hole 241 by rotation.

[0119] In some embodiments, reference may be made to Figure 11 , a first limiting part 242 and a second limiting part 243 are provided on one of the bracket 23 and the rotating part 24, and a blocking part 234 is provided on the other. The blocking part 234 is restricted to rotate between the first limiting part 242 and the second limiting part 243, so that the rotation angle of the rotating part 24 relative to the second housing 21 or the bracket 23 is less than 360°.

[0120] Furthermore, reference may be made to Figure 10 , the second module 2 further includes a damping member 26, and the damping member 26 is provided between the bracket 23 and the rotating part 24 to provide a damping feel when the rotating part 24 rotates relative to the bracket 23.

[0121] The damping member 26 may include a torsion spring. One spring arm of the torsion spring may be connected to the bracket 23, and the other spring arm of the torsion spring may be connected to the rotating part 24. The axis of the spiral body of the torsion spring may be perpendicular to the axis of the receiving tube 22. The damping member 26 may provide a force to keep the rotating part 24 in a position where the insertion hole 241 remains exposed. The damping member 26 may provide a force to keep the rotating part 24 in a position where the insertion hole 241 remains hidden.

[0122] In some embodiments, the aerosol generating device 100 further includes a power supply assembly 4. The power supply assembly 4 is used to be electrically connected to the heating element 3 or to be electrically connected to the magnetic field generator, so as to provide power for the heating element 3 to generate heat or to provide power for the magnetic field generator to generate a changing magnetic field. The power supply assembly 4 may be disposed in the first housing 11 and thus be shielded by the first housing 11. The power supply assembly 4 may include an electric core, and the electric core may be any suitable electric core, such as a lithium battery. The electric core may be a rechargeable electric core. The electric core may be a disposable electric core. The power supply assembly 4 may further include a circuit board, and the circuit board is used to control the power output of the electric core, such as controlling the electric core to provide power for the heating element 3 or for the magnetic field generator. The circuit board may also control other operations of the electric core, such as controlling the electric core to provide power to the sensory promptor so that the sensory promptor generates a sensory prompt signal, and the sensory prompt signal includes but is not limited to sound, vibration or light, etc.

[0123] It should be noted that the description and drawings of the present application give preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present application.

Claims

1. An aerosol generating device, characterized in that, Comprising: A first module, including a first housing and a heat conducting element with a thermal conductivity of at least 1 W / (m·K); And A second module, including a second housing, an accommodation cavity is provided inside the second housing, and at least a part of the aerosol-generating article can be accommodated in the accommodation cavity; And A heating element for heating the aerosol-generating article to generate aerosol, at least a part of the heating element is surrounded by the second housing, and the heating element is spaced apart from the heat conducting element; Wherein, at least a part of the heat conducting element is located between the second housing and the heating element, and the thermal resistance between the heat conducting element and the first housing is less than the thermal resistance between the heat conducting element and the second housing.

2. The aerosol generating device according to claim 1, wherein, The first module further includes a guiding portion, the thermal conductivity of the guiding portion is less than that of the heat conducting element, and the heat conducting element includes a first part and a second part connected to each other; The first part is located between the second housing and the heating element, and at least a part of the guiding portion is located between the first part and the second housing; the second part is adjacent to the first housing.

3. The aerosol generating device according to claim 2, wherein The heating element is fixed on the first module, the second module is configured to be movable between a first position and a second position along the guiding portion, and when the second module is in the first position, the first part is located between the second housing and the heating element, and at least a part of the guiding portion is located between the first part and the second housing; Wherein, the depth at which the heating element is inserted into the accommodation cavity when the second module is in the first position is greater than the depth at which the heating element is inserted into the accommodation cavity when the second module is in the second position.

4. The aerosol generating device according to claim 3, characterized in that, When the second module is in the second position, the first module is kept connected to the second module, and at least a part of the heating element is exposed.

5. The aerosol generating device according to claim 3, wherein, The second module further includes a receiving tube provided inside the second housing, the accommodation cavity is located in the receiving tube, the proximal end of the receiving tube is open for the aerosol-generating article to be inserted into the accommodation cavity, and the distal end of the receiving tube has a base for supporting the bottom of the aerosol-generating article; When the second module is in the first position, the heating element is hidden and at least a part of the heating element passes through the base and is located in the accommodation cavity; There is a heat insulation layer between the receiving tube and the second housing.

6. The aerosol generating device according to claim 5, wherein, Both the guiding portion and the first part have a plurality of them, and at least one guiding portion is provided between each first part and the second housing; wherein At least a part of the heat insulation layer is located between two adjacent guiding portions; or When the second module is in the first position, the heat insulation layer and the plurality of guiding portions surround the receiving tube.

7. The aerosol generating device according to claim 5, wherein The second module further includes a bracket connecting the receiving tube, a sliding rail is provided on one of the bracket and the guiding portion, and a slider is provided on the other, the slider is configured to be slidable along the sliding rail and is stopped when sliding to the end of the sliding rail to prevent the second module from detaching from the first module.

8. The aerosol generating device according to claim 2, wherein, The first module further includes a fixing part, the thermal conductivity of the fixing part is less than that of the heat conducting element, the heating element is fixed on the fixing part, and the second part is connected to the fixing part.

9. The aerosol generating device according to claim 8, wherein, The second part is located in the first housing, the fixing part is connected to the first housing, and the fixing part is located between the second part and the second module.

10. The aerosol generating device according to claim 3, wherein, The aerosol generating device further includes a reset assembly, the reset assembly connects the first module and the second module, and the reset assembly is configured to automatically reset the second module to the first position.

11. The aerosol generating device according to claim 10, wherein, The first module further includes a sealing plug and a guiding part having a cavity, and a connection hole is provided on the wall of the guiding part; The reset assembly includes a holding member and a first elastic member, the first elastic member connects the holding member and the second module; a part of the holding member passes through the connection hole and is held in the cavity; The heat conducting element includes a first part disposed in the cavity, the sealing plug is press-fitted in the cavity, and at least a part of the sealing plug is located between the connection hole and the first part.

12. The aerosol generating device according to claim 11, wherein, The heat conducting element further includes a heat conducting layer disposed on the surface of the sealing plug, and the heat conducting layer is in contact with the first part; or A part of the sealing plug is nested with the first part, and the heat conducting element further includes a heat conducting material filled in the gap between the sealing plug and the first part.

13. The aerosol generating device according to claim 1, wherein The proximal end of the second housing has an open mouth, the second module further includes a rotating part, and an insertion hole is formed in the rotating part, and the insertion hole is configured to allow the aerosol generating article to be inserted into the accommodation cavity; Wherein, a part of the rotating part is hidden in the second housing and a part is exposed through the open mouth, and the rotation is configured to be rotatable relative to the second housing to hide or expose the insertion hole by rotation.

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