Patent Application
20230128317
This application claims priority to Chinese Patent Application No. 2020100481609, entitled “Aerosol generating device” and submitted to China National Intellectual Property Administration on Jan. 16, 2020, the entire content of which is incorporated herein by reference.
The embodiment of the present disclosure relates to the technical field of heating nonburning smoking sets, and in particular to an aerosol generating device.
Tobacco products (e.g., cigarettes, cigars, etc.) are burning tobaccos to produce tobacco smoke during use. People attempt to make products that release compounds without burning so as to replace these tobacco products burning tobaccos.
An example of this kind of products is a heating device, which heats rather than burns a material to release compounds, for example, the material may be a tobacco product or other non-tobacco products which may contain or not contain nicotine. As another example, there exists an infrared heating device which heats a tobacco product through infrared radiation so that the tobacco product releases a compound to generate an aerosol. For example, Chinese Patent Application No. 201821350103.0 of a known technology provides a heating device structure in which a nano far infrared coating and a conductive coating are formed in turn on an outer surface of a quartz tube, wherein the conductive coating is connected to a power source configured to supply power, so that the nano far infrared coating itself generates heat under the supply of power and at the same time forms electron transition to generate infrared rays which then radiate onto the tobacco product within the quartz tube to heat the tobacco product. During implementations, the radiated infrared rays are absorbed at the surface layer of the tobacco product and the interior of the tobacco product is difficult to be heated, preventing the internal utilization of the tobacco product.
In order to solve the problem of inefficiency of the heating device in heating the interior of tobacco products in existing technologies, the embodiment of the present disclosure provides an aerosol generating device.
In view of the above, the aerosol generating device according to the present disclosure, configured to heat a smokable material to generate an aerosol for inhalation, includes:
a chamber, configured to receive a smokable material;
the chamber having a first radial direction, and a second radial direction that is perpendicular to the first radial direction; and
a first infrared emitter and a second infrared emitter that are arranged in the first radial direction of the chamber and configured to radiate infrared rays towards the chamber so as to heat the smokable material, the first infrared emitter and the second infrared emitter extending at least partially in the second radial direction, thereby defining the chamber between the first infrared emitter and the second infrared emitter, such that the size of the chamber in the second radial direction is greater than that in the first radial direction.
In a preferred embodiment, the first infrared emitter and the second infrared emitter are separated from each other.
In a preferred embodiment, the first infrared emitter and the second infrared emitter are spaced with certain distance, to form an airflow channel for external air to enter the chamber.
In a preferred embodiment, the first infrared emitter is configured to be able to move in the first radial direction relative to the second infrared emitter, to change the size of the chamber in the first radial direction.
In a preferred embodiment, the first infrared emitter has a first position and a second position opposite to the second infrared emitter, and is able to move between the first position and the second position in the first radial direction relative to the second infrared emitter; wherein
the size of the chamber in the first radial direction when the first infrared emitter is at the first position is less than the size of the chamber in the first radial direction when the first infrared emitter is at the second position.
In a preferred embodiment, the aerosol generating device further includes a retaining mechanism, which is configured to stably retain the first infrared emitter at the first position and/or the second position.
In a preferred embodiment, the aerosol generating device further includes a biasing element, which is configured to bias the first infrared emitter towards the second position.
In a preferred embodiment, the first infrared emitter and/or the second infrared emitter are/is configured as the shape of a sheet extending in the second radial direction.
In a preferred embodiment, the first infrared emitter and/or the second infrared emitter are/is configured as the shape of a curve bending outwards in the first radial direction of the chamber.
In a preferred embodiment, the first infrared emitter or the second infrared emitter includes:
a base; and,
an infrared emitting coating formed on a surface of the base or an infrared emitting film bonded to a surface of the base.
According to the above aerosol generating device, a first infrared emitter and a second infrared emitter are oppositely disposed and define and form a chamber the size of which is smaller in a first radial direction than that in a second radial direction, thereby reducing the distance between the radiated infrared rays and the internal center of the smokable material, increasing the ability and efficiency of absorbing infrared rays inside a smokable material, such that a surface layer and the interior of the smokable material can be relatively uniformly heated.
One or more embodiments are illustrated through the image(s) in corresponding drawing(s). These illustrations do not form restrictions to the embodiments. Elements in the drawings with a same reference number are expressed as similar elements, and the images in the drawings do not form proportional restrictions unless otherwise stated.
The present disclosure will become better understood from a detailed description of the present disclosure below taken in conjunction with drawings and particular embodiments.
One embodiment of the present disclosure provides an aerosol generating device which heats rather than burns a smokable material such as a cigarette, so that at least one ingredient of the smokable material is volatilized or released to form an aerosol for inhalation.
In a preferred embodiment, the aerosol generating device heats the smokable material by radiating far infrared rays having a heating effect, for example, far infrared rays of 3 μm to 15 μm; during operation, when the wavelength of the infrared rays matches with the wavelength absorbable by the volatile ingredient of the smokable material, the energy of the infrared rays is easy to be absorbed by the smokable material, thus the smokable material is heated so that at least one volatile ingredient is volatilized to generate an aerosol for inhalation.
The aerosol generating device according to one embodiment of the present disclosure can refer to
a shell 10, which is configured to be hollow inside, thereby forming an assembly space for necessary functional components such as infrared radiation; the shell 10 includes a proximal end 110 and a distal end 120 that are opposite in the length direction, wherein
the proximal end 110 defines a receiving hole 111, and through the receiving hole 111, a smokable material A may be received within the shell 10 to be heated or may be removed from the shell 10.
To heat the smokable material A received within the shell 10 through radiation of infrared rays, further, the shell 10 is internally provided with an infrared emitter 20 for heating; in one embodiment, the structure can refer to
the shell 10 is internally provided with a chamber 30 configured to receive a smokable material A;
the infrared emitter 20 includes a first infrared emitter 21 and a second infrared emitter 22 that are arranged surrounding the chamber 30; specifically, according to the structure shown in figures, the first infrared emitter 21 and the second infrared emitter 22 are totally the same in structure and content, both including two parts:
a base portion 211/221, which as a rigid support substrate material may be made of high-temperature resistant and infrared transmissive materials such as quartz glass, ceramic, mica, etc. during implementations; and
an infrared emitting coating 212/222 formed on the base portion 211/221, wherein the infrared emitting coating 212/222 is capable of generating heat when electrified, thereby radiating infrared rays that can be used to heat the smokable material A, for example, the above far infrared rays of 3 μm to 15 μm. When the wavelength of the infrared rays matches with the wavelength absorbable by the volatile ingredient of the smokable material, the energy of the infrared rays is easy to be absorbed by the smokable material.
Generally, during implementations, the infrared emitting coating 212/222 may be a coating made of ceramic materials such as zirconium, or Fe—Mn—Cu series, tungsten series, or transition metals and their oxide materials.
In a preferred embodiment, the infrared emitting coating 212/222 preferably is composed of an oxide of at least one metallic element among Mg, Al, Ti, Zr, Mn, Fe, Co, Ni, Cu, Cr, Zn, etc.; these metallic oxides when heated to an appropriate temperature can radiate far infrared rays having a heating effect; the thickness of the coating preferably may be controlled between 30 μm to 50 μm; the formation mode on the surface of the base portion 211/221 may be achieved by spraying the oxides of the above metallic elements on the outer surface of the base portion 211/221 through an atmospheric plasma spraying method and then curing it, that is, obtaining an infrared emitting film bonded to the surface of the base.
The above first infrared emitter 21 and second infrared emitter 22, as shown in figures, are configured as a curved shape in cross section, such that it is easy to form the infrared emitting coating 212/222 on surfaces thereof respectively.
Further, in a preferred embodiment, the first infrared emitter 21 and the second infrared emitter 22 may be supplied with power or controlled separately, so that they can radiate infrared rays independently to heat different portions of the smokable material A. Specifically, in an optional control manner, the first infrared emitter 21 and the second infrared emitter 22 may be started alternately or at the same time.
Further, according to the embodiments of the heating state shown in
Further, in a preferred embodiment, the first infrared emitter 21 and the second infrared emitter 22 are separated from each other and may move relative to each other, specifically referring to
As shown in
From
To facilitate the operation of relative movement between the first infrared emitter 21 and the second infrared emitter 22, in the preferred embodiments shown in
Of course, further, in an optional embodiment, to enable the first infrared emitter 21 and the second infrared emitter 22 to be stably retained at different positions respectively, the shell 10 is internally provided with a retaining mechanism, for example, a first retaining element 51 located on the first infrared emitter 21 as shown in
In another variant embodiment as shown in
Further, in a variant embodiment, the structure of the infrared emitter 20b may refer to
a first infrared emitter 21b and a second infrared emitter 22b that are configured as the shape of a sheet, wherein the first infrared emitter 21b and the second infrared emitter 22b are arranged at two opposite sides of the chamber 30b, and they can move relative to each other to squeeze the smokable material A received within the chamber 30b, so that the smokable material A is squeezed into the oval shape shown in
In another variant embodiment, as shown in
During the smoking process of the above aerosol generating device, as indicated by the arrows R3 shown in
It is to be noted that the description of the present disclosure and the drawings just list preferred embodiments of the present disclosure and are not limited to the embodiments described herein. Further, for the ordinary staff in this field, improvements or variations may be made according to the above description, and all these improvements or variations are intended to be included within the scope of protection of the claims appended hereinafter.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010048160.9 | Jan 2020 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/072136 | 1/15/2021 | WO |
