Embodiments of the present application relate to the technical field of smoking sets which are noncombustible when being heated, and in particular, relate to an aerosol generating device and a heater.
Tobacco products (e.g., cigarettes, cigars, etc.) burn tobacco to produce tobacco smoke during use. Attempts have been made to replace these tobacco-burning products by manufacturing products that release compounds without burning.
An example of such products is a heating device, which release compounds by heating instead of burning a material. For example, the material may be tobacco or other non-tobacco products, and these non-tobacco products may or may not contain nicotine. As another example, a susceptor is currently available for heating the tobacco products by surrounding the tobacco products or being inserted into the tobacco products. As a known heating device, the heat of the susceptor is only partially received by tobacco products, and the utilization efficiency of heat is low.
In order to solve the problem of low heat utilization rate of heating devices in the prior art, an embodiment of the present application provides an aerosol generating device for improving the heat utilization rate of inductive heating.
Based on the above description, an aerosol generating device provided according to one embodiment of the present application is configured to heat a smokable material to generate aerosol for inhalation, and it comprises:
In a preferred embodiment, the infrared emission portion and the susceptor portion are in contact with each other so that the infrared emission portion receives heat of the susceptor portion through contact conduction.
In a preferred embodiment, at least a part of the axial extension length of the susceptor portion along the cavity coincides with the extension length of the infrared emission portion along the cavity.
In a preferred embodiment, the heater is configured in the shape of a pin or blade extending at least partially along the axial direction of the cavity.
In a preferred embodiment, the infrared emission portion is configured to be located outside the susceptor portion along the radial direction of the heater.
In a preferred embodiment, the heater comprises:
In a preferred embodiment, the susceptor portion extends along the axial direction of the hollow space;
the infrared emission portion is an infrared emission coating formed on the surface of the susceptor portion or an infrared emission thin film wound on the surface of the susceptor portion.
In a preferred embodiment, the susceptor portion is configured in the shape of a pin or blade extending at least partially along the axial direction of the cavity;
the infrared emission portion is a coating formed on the surface of the susceptor portion.
In a preferred embodiment, the heater further comprises a protective layer formed on the surface of the infrared emission portion.
In a preferred embodiment, the heater is configured in a tubular shape extending along the axial direction of the cavity and surrounding the cavity.
In a preferred embodiment, the infrared emission portion is configured to be closer to the cavity than the susceptor portion.
In a preferred embodiment, the susceptor portion is configured in a tubular shape extending along the axial direction of the cavity and surrounding the cavity;
the infrared emission portion is an infrared emission coating formed on the inner surface of the susceptor portion.
In a preferred embodiment, the heater comprises:
In a preferred embodiment, the infrared emission portion is an infrared emission coating formed on the outer surface of the base or an infrared emission thin film wound on the outer surface of the base.
In a preferred embodiment, the susceptor portion is a susceptor coating formed on the infrared emission portion; or the susceptor portion is configured as a rigid tube abutting against the infrared emission portion.
One embodiment of the present application further provides a heater for an aerosol generating device, the heater is configured to heat a smokable material to generate aerosol for inhalation, and it comprises:
During the use of the aerosol generating device described above, on the one hand, the susceptor portion generates heat by inductive heating so that the smokable material is directly heated by heat conduction; and on the other hand, the infrared emission portion is excited by the heat of the susceptor portion to radiate infrared rays, thereby assisting in the heating of the smokable material, and improving the utilization efficiency of heat.
One or more embodiments are illustrated by pictures in corresponding attached drawings, and this does not constitute limitation on the embodiments. Elements with the same reference numerals in the attached drawings are shown as similar elements, and the pictures in the attached drawings do not constitute scale limitation unless otherwise stated specifically.
In order to facilitate the understanding of the present application, the present application will be described in more detail below with reference to attached drawings and detailed description.
One embodiment of the present application provides an aerosol generating device for heating instead of burning a smokable material, such as cigarettes, so as to volatilize or release at least one component of the smokable material to form aerosol for inhalation.
Reference may be made to
As can be further seen from
The housing 10 is further provided with a switch button 13 on one side in the width direction, and a user may manually actuate the switch button 13 to control the start or stop of the aerosol generating device.
Further referring to
Further referring to the embodiment shown in
To further facilitate the installation and fixation of the heating mechanism in the housing 10, the heating mechanism further comprises:
an upper support 40 arranged at the upper end of the tubular support 20, wherein the upper support 40 is in an annular shape coaxial with the tubular support 20, and is provided thereon with a fixing structure 41 for connecting and fixing the housing 10, thereby fixing and holding the upper end of the heating mechanism in the housing 10. As can be seen from
Of course, the smokable material A may pass through the central hole of the upper support 40 to be received in or removed from the cavity 21.
Further referring to
Specifically, referring to
Further speaking, in a preferred embodiment shown in
In a preferred embodiment, and the tubular support 20, the fixing seat 50 and the lower end cover 22 can all be made of high-temperature resistant organic polymer materials, such as PEEK, polycarbonate, polytetrafluoroethylene or the like, or inorganic ceramic materials with good temperature resistance, such as zirconia ceramics,
In the embodiment of the present application, the heater 60 is a heater 60 which heats the smokable material A either in an electromagnetic inductive manner or in an infrared radiation manner. Specifically, further referring to
a base 61 made of rigid infrared-permeable quartz, glass or ceramic materials, and configured in the shape of a pin so as to be inserted into the smokable material A; of course, in order to facilitate the installation and fixing of the heater 60, the base 61 is provided thereon with a base portion 62 for abutting against and fixing with the fixing seat 50. The base 61 is provided therein with a hollow space 63 for receiving a heating element 64, and the heating element 64 is encapsulated or contained in the base 61 to emit heat and radiate infrared rays.
Specifically, the heating element 64 comprises a susceptor portion, which is an elongated bar-shaped or rod-shaped susceptor 641 in this embodiment. The susceptor portion is made of a metal material with appropriate magnetic permeability that is inductively coupled with an alternating magnetic field, and it may be penetrated by a varying magnetic field to generate heat. The heat generated sequentially passes through the infrared emission coating 642 and the base 61 outward in the radial direction, and then is transferred to the smokable material A so that the smokable material A may be heated by heat conduction. The heating element 64 further comprises a thermally induced infrared emission coating 642 formed on the susceptor 641 or a thermally induced infrared emission thin film 642 wound on the susceptor 641. The infrared emission coating 642 of the heating element 64 may be excited while receiving the heat from the susceptor 641, and then radiate far infrared rays with heating effect, such as far infrared rays of 3 µm to 15 µm. When the wavelength of infrared rays matches the absorption wavelength of volatile components of the smokable material A, the energy of infrared rays is easily absorbed by the smokable material so that the smokable material A is heated.
The susceptor 641 may be made of grade 430 stainless steel (SS430), grade 420 stainless steel (SS420), and alloy materials containing iron and nickel (such as J85/J66 permalloy). It has excellent magnetic permeability, and it can be rapidly heated up under the alternating magnetic field.
The infrared emission coating 642 is made of a thermally induced infrared emission material. Specifically, the infrared emission coating 642 includes coatings made of ceramic based materials (e.g., zirconium), or Fe—Mn—Cu based materials and tungsten based materials.
In a preferred embodiment, the infrared emission coating 642 comprises, but not limited to, a sub-material: carbon materials (amorphous carbon film, DLC film, graphene, carbon nanotubes, etc.), oxides (Fe2O3 ’ Al2O3 ’ Cr2O3 ’ In2O3 ’ La2O3 ’ Co2O3 ’ Ni2O3 ’ Sb2O3 ’ Sb2O5 ’ TiO2 ’ ZrO2 ’ CeO2 ’ CuO ’ ZnO ’ MgO ’ CaO ’ MoO3, etc.), carbides (such as SiC, etc.), nitrides (such as TiN, CrN, A1N, Si3N4, etc.) or a combination of two or more of the above materials. The infrared emission coating 642 will radiate the far infrared rays with heating effect described above when it is heated to a proper temperature by the susceptor 641. The thickness of the infrared emission coating 642 may preferably be controlled to range from 30 µm to 50 µm.The infrared emission coating 642 may be formed on the surface of susceptor 641 by spraying the above materials on the outer surface of susceptor 641 by atmospheric plasma spraying and then curing the materials.
During the use of the heater 60 described above, on the one hand, the susceptor 641 generates heat by inductive heating so that the smokable material A is directly heated by heat conduction; and on the other hand, the infrared radiation is excited by the heat of the susceptor 641, thereby assisting in the heating of the smokable material A, and improving the utilization efficiency of heat.
Furthermore, as can be further seen from the above embodiment, when the heater 60 is inserted into the smokable material A for heating, the infrared emission coating 642 surrounds the outside of the susceptor 641, and this can ensure that the infrared rays emitted by the infrared emission coating 642 are not blocked and then smoothly radiated to the smokable material A.
Moreover, in the preferred embodiment shown in
Furthermore, in yet another modified embodiment of the heater 60a shown in
Of course, in a more preferred embodiment, an infrared-permeable protective layer (not shown in the figure) such as a layer of glass may be added or formed outside the infrared emission coating 62a for the heater 60a shown in
In yet another variant embodiment, as shown in
the tubular hollow space of the heater 60b forms a cavity 63b for accommodating and heating the smokable material A.
Further referring to
In yet another optional embodiment, the susceptor portion may be in the form of a coating or a thin film. For example, the structure of the heater 60c may be as shown in
In other variant embodiments, the infrared emission coating 62c described above may also adopt an infrared emission thin film, such as a zinc oxide thin film, a graphene thin film, or an indium oxide thin film doped with rare earth metal, or a composite thin film formed with infrared emitting materials on flexible thin film substrates such as polyimide, ceramic paper, and flexible glass. Moreover, the corresponding susceptor heating coating 63c may be correspondingly changed into the form of a rigid tube made of magnetically conductive metal or alloy.
As can be further seen from the embodiment shown in
It shall be noted that, the specification and attached drawings of the present application show preferred embodiments of the present application. However, the present application is not limited to the embodiments described in this specification. Further speaking, those of ordinary skill in the art can make improvements or variations according to the above description, and all these improvements and variations shall fall within the scope claimed in the appended claims of the present application.
Number | Date | Country | Kind |
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202020057718.5 | Jan 2020 | CN | national |
The present application claims priority to Chinese Patent Application No. 202020057718.5, filed with the Chinese Patent Office on Jan. 13, 2020, titled “AEROSOL GENERATING DEVICE AND HEATER”, the entire contents of which are incorporated herein by reference.
Filing Document | Filing Date | Country | Kind |
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PCT/CN2021/071323 | 1/12/2021 | WO |