This application claims priority to Chinese Patent Application No. 202120637200.3, filed with China National Intellectual Property Administration on Mar. 29, 2021 and entitled “VAPOR GENERATION DEVICE AND RESISTANCE HEATER FOR VAPOR GENERATION DEVICE”, which is incorporated herein by reference in its entirety.
Embodiments of this application relate to the technical field of heat-not-burn cigarette devices, and in particular, to a vapor generation device and a resistance heater for a vapor generation device.
Tobacco products (such as cigarettes, cigars, and the like) burn tobacco during use to produce tobacco smoke. Attempts are made to replace these tobacco-burning products by manufacturing products that release compounds without burning tobacco.
An example of this type of products is a heating device that releases the compounds by heating rather than burning materials. For example, the materials may be tobacco or another non-tobacco product, where the non-tobacco products may or may not include nicotine. As another example, there is a heating device that heats a tobacco product through a heater to release a compound to form an aerosol. For example, as a known technology, Patent No. 201280070578.3 provides a design suitable for an airflow path in an inhalation process of the heating device. When the foregoing known device is in use, heat of the heater is radially radiated or transferred outwardly to an outer housing of the device, thereby increasing the temperature of the outer housing.
An embodiment of this application provides a vapor generation device, configured to heat an aerosol generation product to generate an aerosol, and including a housing, where the housing has a proximal end and a distal end opposite to each other in a length direction; a proximal end is arranged on the receiving hole; and the housing is internally provided with:
In a preferred implementation, the keeping element includes an inner tube and an outer tube arranged in sequence from inside to outside in a radial direction, and the hollow region is formed between the inner tube and the outer tube.
In a preferred implementation, an air inlet hole close to the proximal end is provided on the outer tube or the inner tube or between the outer tube and the inner tube, and is configured for allowing air to enter the hollow region.
In a preferred implementation, an air outlet hole close to the distal end is provided on the inner tube, and is configured for allowing air in the hollow region to enter the chamber.
In a preferred implementation, the outer tube has a portion with a reduced outer diameter close to the distal end, and is connected to the inner tube through the part with the reduced outer diameter.
In a preferred implementation, the hollow region has an opening close to the proximal end; and
In a preferred implementation, the housing is further internally provided with:
In a preferred implementation, the housing is further internally provided with:
In a preferred implementation, the heating element is constructed to be tubular or helical around the inner tube.
Another embodiment of this application further provides a resistance heater for a vapor generation device, constructed to be elongated and having a first end and a second end opposite to each other in a length direction, and including:
The vapor generation device has two heat exchange manners of conduction and convection, so that heat of the heating element is substantially completely absorbed by the aerosol generation product, thereby improving the heat utilization rate.
One or more embodiments are exemplarily described with reference to the corresponding figures in the accompanying drawings, and the exemplary descriptions are not to be construed as limiting the embodiments. Elements/modules and steps in the accompanying drawings that have same reference numerals are represented as similar elements/modules and steps, and unless otherwise particularly stated, the figures in the accompanying drawings are not drawn to scale.
For ease of understanding of this application, this application is described below in more detail with reference to the accompanying drawings and specific implementations.
An embodiment of this application provides a vapor generation device that heats but not burns an aerosol generation product, such as a cigarette, so as to volatilize or release at least one component of the aerosol generation product to form an aerosol for inhalation.
A configuration of the vapor generation device according to an embodiment of this application may be shown in
Further, the internal configuration of the housing 10 is shown in
In an optional implementation, the resistance heater 20 has a length of about 60 mm to 95 mm and an inner diameter of about 4 mm to 8 mm.
Further, in an optional implementation, the aerosol generation product A is preferably made of a tobacco-containing material that releases a volatile compound from a substrate when being heated, or a non-tobacco material suitable for electric heating and smoking after being heated. The aerosol generation product A is preferably made of a solid substrate. The solid substrate may include one or more of powders, particles, fragmented strips, strips, or flakes of one or more of vanilla leaves, tobacco leaves, homogeneous tobacco, and expanded tobacco. Alternatively, the solid substrate may include additional tobacco or non-tobacco volatile aroma compounds to be released when the substrate is heated.
Further, according to
A specific configuration of the resistance heater 20 may be shown in
In an optional implementation, the inner tube 21 and the outer tube 22 are made of a heat-resistant and heat-conductive material such as glass, ceramic, metal, or alloy, for example, stainless steel. Certainly, after assembly, the inner tube 21 of the keeping element 25 and the heating element 24 abut against each other to conduct heat to each other, and are insulated from each other. For example, insulation may be formed between contact surfaces by gluing, surface oxidation, or spraying an insulation layer.
The heating element 24 is made of a metal material with an appropriate impedance, a metal alloy, graphite, carbon, conductive ceramic, or another composite material of a ceramic material and a metal material. A suitable metal or alloy material includes at least one of nickel, cobalt, zirconium, titanium, nickel alloy, cobalt alloy, zirconium alloy, titanium alloy, nickel-chromium alloy, nickel-iron alloy, iron-chromium alloy, iron-chromium-aluminum alloy, titanium alloy, iron-manganese-aluminum based alloy, or stainless steel.
In another optional implementation, the heating element 24 may alternatively be prepared by winding a sheet-type mesh resistive substrate. Alternatively, in some other optional implementations, the heating element 24 may alternatively be in a form of a conductive trace formed on the inner tube 21 by printing, deposition, etching, and the like. In another optional implementation, the heating element 24 may be an induction heating element configured to be heated by induction of a magnetic field, and the induction heating element may be positioned in the hollow region 23 or kept on a surface of the inner tube or the outer tube close to the hollow region 23. It may be understood that the heating element 24 may be formed by at least a part of the configuration of the keeping element. For example, at least a part of the inner tube is constructed to induce heat by the magnetic field, thereby radially conducting heat to the aerosol generation product within the chamber while heating the airflow within the hollow region 23.
Further, referring to
According to the preferred embodiments shown in
Specifically, referring to the preferred implementation shown in
More preferably, the inner tube 21 is provided with a plurality of air inlet holes 212 of the upper end 210 and a plurality of air outlet holes 213 close to the lower end 220. After assembly, the air is caused to enter the aerosol generation product A through an air flow path shown by the arrow R in
The resistance heater 20 has two heat exchange manners of conduction and convection, so that heat of the heating element 24 is substantially completely absorbed by the aerosol generation product A, thereby improving the heat utilization rate. Further, a maximum temperature of the heating element 24 can be reduced, energy consumption can be saved, and a preheating time can be reduced; and a better inhalation taste can be obtained, and more inhalations can be obtained.
Further, as shown in
Further, in an optional implementation, the outside air entering the air inlet hole 212 may be entered by a gap between the receiving hole 111, the upper support 30, and the aerosol generation product A in
Further, in a more preferred implementation, some annular protrusions, or sealing materials or sealing structures such as flexible silicone rings (not shown in the figure) can also be added to the inner wall of the inner tube 21, which can be arranged at positions between the air inlet holes 212 and the air outlet holes 213, preferably close to the air inlet hole 212. The sealing material or the sealing structure prevents air from directly entering the gap between the inner tube 21 and the outer surface of the aerosol generation product A directly downward to the end of the aerosol generation product A close to the lower end 220 to be inhaled, so that air can only enter through the hollow region 23 in
It should be noted that, the specification and the accompanying drawings of this application provide preferred embodiments of this application, but is not limited to the embodiments described in this specification. Further, a person of ordinary skill in the art may make improvements or modifications according to the foregoing descriptions, and all the improvements and modifications shall fall within the protection scope of the appended claims of this application.
Number | Date | Country | Kind |
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202120637200.3 | Mar 2021 | CN | national |
Filing Document | Filing Date | Country | Kind |
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PCT/CN2022/081694 | 3/18/2022 | WO |