Light-wave heating assembly and aerosol generation apparatus

Abstract

A light-wave heating assembly (100) and an aerosol generation apparatus (200). The heating assembly (100) comprises: a light-transmitting substrate (10), the light-transmitting substrate (10) having an inner surface (11) and an outer surface (12); a resistance heating film layer (20), the resistance heating film layer (20) being disposed on the outer surface (12) or the inner surface (11) of the light-transmitting substrate (10); and an electrode layer (30), the electrode layer (30) being disposed on a side of the resistance heating film layer (20) facing away from the light-transmitting substrate (10), and the electrode layer (30) comprising a positive electrode layer (31) and a negative electrode layer (32) spaced apart on the resistance heating film layer (20). When the resistance heating film layer (20) is energized, light waves emitted by the resistance heating film layer (20) pass through the light-transmitting substrate (10) to heat a substance to be heated on the inner surface (11) or the outer surface (12) of the light-transmitting substrate (10). Uniform heating is achieved, and heating efficiency is improved.

Description

A light wave heating component and an aerosol generating device Technical Field

[0001] This invention relates to the field of aerosol generation device technology, and more particularly to a light wave heating component and an aerosol generation device. Background Technology

[0002] Tobacco aerosols are generated by heating rather than burning tobacco substances to release compounds. Technical issues

[0003] Currently known tobacco aerosol generating devices include:

[0004] 1. Needle heaters involve inserting a needle-shaped heating element into the center of the object being heated. Heat diffuses outward from the center. Because the area of ​​the needle itself is very small, a relatively high temperature is required to heat the entire material. This inevitably results in a high temperature at the center and a low temperature at the edges, making it difficult for the object to be heated evenly. Excessive center temperature may also cause carbonization of the material in the middle, damaging the heated material.

[0005] 2. Tongue-shaped heaters involve inserting a tongue-shaped heating element into the center of the object being heated. Heat diffuses outward from the center. Tongue-shaped heaters have a slightly larger surface area than needle-shaped heaters, requiring a higher temperature to heat the entire object. This can result in a higher temperature at the center and lower temperatures at the edges, making it difficult to achieve uniform heating. Excessive center temperature may also cause carbonization and damage to the heated material, or incomplete heating of the edges. Furthermore, both needle-shaped and tongue-shaped heaters have relatively low electrothermal conversion efficiency.

[0006] 3. Tubular opaque heaters (ceramic tubes, stainless steel tubes, etc.) involve placing the substance to be heated directly into the heating tube. Heat is generated by the heating element on the outer wall of the tube and transferred to the inner wall of the tube through heat conduction, so that all the inner walls heat the substance. Although the contact area between the heater and the heated object is relatively large, the heat conduction speed is slow. It takes a long time for the temperature to be conducted from the surface of the heated object to the center, which takes too long to reach an equilibrium temperature, and the power consumption is also greater.

[0007] 4. The combination of needle and tubular heaters can achieve a relatively balanced internal and external temperature. However, because the two heaters are used at the same time, the power consumption is too high, which is not conducive to energy saving and reduces or eliminates the battery-powered heater's operating time.

[0008] The heaters in existing aerosol generating devices have defects such as uneven heating, low electrothermal conversion efficiency, and high power consumption.

[0009] Therefore, existing technologies need to be improved. Technical solutions

[0010] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a light wave heating component and an aerosol generating device, which are designed to heat the material more uniformly and with higher heating efficiency.

[0011] To achieve the above objectives, in a first aspect, the present invention provides a light wave heating component, wherein the light wave heating component comprises:

[0012] A light-transmitting substrate, wherein the light-transmitting substrate has an inner surface and an outer surface;

[0013] A resistance heating film layer is disposed on the outer or inner surface of the light-transmitting substrate;

[0014] An electrode layer is disposed on the side of the resistive heating film layer away from the light-transmitting substrate, and the electrode layer includes a positive electrode layer and a negative electrode layer disposed separately on the resistive heating film layer;

[0015] When the resistance heating film is energized, it emits light waves that pass through the light-transmitting substrate to heat the material to be heated on the inner or outer surface of the light-transmitting substrate.

[0016] In some examples, a thin-film thermally sensitive temperature layer disposed on the electrode layer is also included.

[0017] In some examples, a reflective heat-equalizing layer is also included between the electrode layer and the thin-film heat-sensitive temperature layer.

[0018] In some examples, the light-transmitting substrate is a tubular structure.

[0019] In some examples, the resistive heating film layer includes multiple spaced regions, each region having a positive electrode layer and a negative electrode layer to provide independent power to each region.

[0020] In some examples, the resistive heating film is a nano-ATO light wave heating film.

[0021] In some examples, the nano-ATO light wave heating film is formed by depositing nano-ATO raw material on the light-transmitting substrate through a film-forming process. The nano-ATO raw material comprises: 30%–50% stannous chloride or stannous tetrachloride, 0.5%–5% antimony trichloride, 0.5%–10% bismuth trioxide, 30%–65% anhydrous ethanol, 0.5%–8% magnesium chloride, and 0.5%–9% manganese chloride.

[0022] In some examples, the resistance heating film layer is formed by screen printing a resistance paste onto the light-transmitting substrate. The resistance paste comprises: 50%–65% carbon powder or graphene powder, 0.5%–5% terpineol, 0.5%–10% glass powder, and 30%–40% high-temperature resin.

[0023] In some examples, the resistance heating film is made of a metal sheet and a light wave paste, wherein the light wave paste includes at least one or more of calcium powder, magnesium powder, silicon carbide, manganese oxide, and ferrosilicon.

[0024] In some examples, the thin-film heat-sensitive temperature layer is a sheet-like thin-film PTC thermistor.

[0025] Secondly, the present invention also provides an aerosol generating apparatus, wherein the aforementioned light wave heating component is included.

[0026] In some examples, the aerosol generating device further includes a heat insulation pipe, an upper support, a lower support, and an air inlet support;

[0027] The light wave heating component is housed inside the heat insulation tube. The upper support and lower support are respectively sealed at both ends of the heat insulation tube, and the air intake support is provided at the bottom of the lower support.

[0028] It should be understood that, within the scope of this invention, the above-mentioned technical features of this invention and the technical features specifically described below (such as embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described in detail here. Beneficial effects

[0029] When the light wave heating component of this invention heats tobacco, a film-like resistance heating layer is used to coat the light-transmitting substrate to heat the material to be heated on the surface of the substrate. This film-like resistance heating layer has a large heating area and high electrothermal conversion efficiency, reaching over 99%. Simultaneously, after being energized, the film-like resistance heating layer emits light waves that penetrate the light-transmitting substrate, heating the material to be heated on the other side of the substrate through thermal radiation. This light wave thermal radiation heating method can penetrate the gaps between the light-transmitting substrate and the material to be heated, such as tobacco particles. Combined with the Brownian motion of the tobacco and the high-frequency vibration of the tobacco driven by the light waves, the exterior and center of the tobacco can be heated simultaneously. This results in more uniform heating of the tobacco, and the temperature of the exterior and center of the tobacco can quickly reach equilibrium, reducing power consumption and achieving energy saving and emission reduction. Furthermore, the heating efficiency of this invention is higher than that of needle-type, tongue-type, and ceramic tube-type heating methods, and the heated material will not undergo qualitative changes or carbonization due to excessively high temperatures. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 is a cross-sectional schematic diagram of a first embodiment of the optical wave heating component of the present invention.

[0032] Figure 2 is a schematic diagram of the distribution of the resistance heating film layer and the positive electrode layer on the substrate of the present invention, which are divided into multiple regions.

[0033] Figure 3 is a schematic diagram of the distribution of the resistance heating film layer and the negative electrode layer on the substrate of the present invention, which are divided into multiple regions.

[0034] Figure 4 is a schematic diagram of the unfolded multilayer structure on the substrate of the present invention.

[0035] Figure 5 is a schematic diagram of the structure of the aerosol generating device of the present invention in Embodiment 1.

[0036] Figure 6 is an exploded view of the structure in Figure 5.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100-Heating component, 10-Handheld part, 11, 22-Inner surface, 12, 21-Outer surface, 20-Resistant heating film layer, 23-First heating area, 24-Second heating area, 25-Third heating area, 30-Electrode layer, 31-Positive electrode layer, 32-Negative electrode layer, 40-Thin film heat-sensitive temperature layer, 50-Reflective heat-equalizing layer, 200-Heating device, 201-Heat insulation tube, 202-Upper bracket, 203-Lower bracket, 204-Air inlet bracket, 205-Upper sealing ring, 206-Lower sealing ring. The best embodiment of the present invention

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0041] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0042] Specific embodiments are as follows. Please refer to Figures 1 to 4. This embodiment of the invention proposes a light wave heating component 100, comprising:

[0043] The light-transmitting substrate 10 has an inner surface 11 and an outer surface 12. The light-transmitting substrate 10 can be made of a transparent or semi-transparent material that can transmit light waves.

[0044] Preferably, the material of the light-transmitting substrate 10 of the present invention includes at least one of quartz glass, borosilicate glass, and sapphire, and may also be other light-transmitting materials, such as silicon carbide, magnesium fluoride ceramic, yttrium oxide ceramic, magnesium aluminum spinel ceramic, yttrium aluminum garnet single crystal, and germanium single crystal.

[0045] The light-transmitting substrate 10 of the present invention can have various shapes, such as sheet or tube. As one example, as shown in FIG1, the light-transmitting substrate 10 of this embodiment is a tubular structure. Tobacco or other materials to be heated can be placed inside or outside the tubular light-transmitting substrate 10. The tubular structure design makes the light-transmitting substrate 10 easy to install in a compact space and provides a sufficiently large contact area with the material to be heated.

[0046] The wave heating assembly 100 of the present invention further includes a resistance heating film layer 20, which is disposed on the outer surface 12 or inner surface 11 of the light-transmitting substrate 10. The resistance heating film layer 20 covers the outer surface 12 or inner surface 11 of the light-transmitting substrate 10 in a film-like structure. As one embodiment, as shown in FIG1, the resistance heating film layer 20 of the present invention is circumferentially covered on the outer surface 12 of the light-transmitting substrate 10. The function of the resistance heating film layer 20 is to generate light waves and use the light waves to heat the tobacco or other materials to be heated by thermal radiation.

[0047] When the resistance heating film layer 20 of the present invention is energized, it emits light waves that pass through the light-transmitting substrate 10 to heat the material to be heated on the inner surface 11 or outer surface 12 of the light-transmitting substrate. In this embodiment, when the resistance heating film layer 20 is energized, it emits light waves that pass through the light-transmitting substrate 10 to heat the material to be heated on the inner surface 11 of the light-transmitting substrate.

[0048] The light wave emitted by the resistive heating film layer 10 of this invention after being energized is an infrared light wave. Infrared light waves have good thermal radiation performance. Preferably, the light wave emitted by the resistive heating film layer 10 of this invention after being energized is a far-infrared light wave, which has even better thermal radiation performance. At the same time, the light wave emitted by the resistive heating film layer 10 of this invention has a wavelength of 4-18 μm. The frequency of light waves in this wavelength range is close to the natural frequency of tobacco. Therefore, the light wave emitted by the resistive heating film layer 10 of this invention after being energized can drive the tobacco to resonate, thereby improving the heating effect on the tobacco and making the heating more uniform.

[0049] The heating element of this invention is a film-shaped resistance heating film layer 20. Compared with existing needle-type, tongue-type, and ceramic tube-type heating elements, it has a larger heating area and higher electrothermal conversion efficiency. Simultaneously, the film-shaped resistance heating film layer 20 emits light waves after being energized, heating the material to be heated on the other side of the light-transmitting substrate 10 through thermal radiation. Thermal radiation heating is more efficient than traditional heat conduction heating, further improving the heating efficiency of the heating component 100 of this invention. The light wave thermal radiation heating method can penetrate the light-transmitting substrate 10 and the gaps between tobacco particles. Combined with the Brownian motion of the tobacco and the high-frequency vibration of the tobacco driven by the light waves, the exterior and center of the tobacco can be heated simultaneously. Thus, the heating component 100 of this invention ensures uniform heating of the center and surface of the tobacco during operation, allowing the surface and center temperatures to quickly reach equilibrium, reducing power consumption. Furthermore, the heated material will not undergo qualitative changes or carbonization due to excessive temperature differences between the inside and outside.

[0050] It is understood that the optical wave heating component 100 of the present invention, in addition to emitting light waves through the resistance heating film layer 20 to heat the material to be heated via optical wave thermal radiation, also simultaneously heats the material to be heated via thermal conduction. When the resistance heating film layer 20 is energized, in addition to emitting light waves, it also generates heat through its own molecular thermal motion. This molecular thermal motion impacts the light-transmitting substrate 10 and transfers heat to the material to be heated on the other side of the light-transmitting substrate 10 via thermal conduction. That is, the optical wave heating component 100 of the present invention simultaneously possesses two heating methods: one is optical wave thermal radiation, and the other is thermal conduction. Among these, the heating component 100 of the present invention primarily uses optical wave thermal radiation heating, with thermal conduction heating as a secondary method.

[0051] The light wave heating component 100 of the present invention directly covers the outer surface 12 or inner surface 11 of the light-transmitting substrate 10 with the resistance heating film layer 20. In this way, there are no other structures or materials blocking the light-transmitting substrate 10, which can ensure the light transmission effect, improve the heat conduction efficiency, and simplify the structure. If other structures, such as electrodes, are added between the resistance heating film layer 20 and the light-transmitting substrate 10, the influence of the electrodes on the light waves needs to be considered, or the electrodes need to be made of light-transmitting materials, which will increase the complexity of the structure and the cost.

[0052] The light wave heating assembly 100 of the present invention further includes an electrode layer 30, which is disposed on the side of the resistive heating film layer 20 away from the light-transmitting substrate 10. The electrode layer 30 includes a positive electrode layer 31 and a negative electrode layer 32 disposed separately on the resistive heating film layer 20. As one embodiment, as shown in FIG1, in this embodiment of the present invention, the electrode layer 30 is attached to the outer surface 21 of the resistive heating film layer 20, and the inner surface 22 of the resistive heating film layer 20 is attached to the outer surface 12 of the light-transmitting substrate 10. That is, in this embodiment, the electrode layer 30 is disposed on the outer side of the resistive heating film layer 20, and the outer electrode layer 30 of the resistive heating film layer 20 is divided into a positive electrode layer 31 and a negative electrode layer 32, which are separated to prevent short circuits. In other words, both the positive electrode layer 31 and the negative electrode layer 32 cover the resistive heating film layer 20, but are separate. Preferably, a positive electrode lead is connected to the positive electrode layer 31, and a negative electrode lead is connected to the negative electrode layer 32. The positive and negative electrode leads facilitate circuit connection. It can be understood that the positive electrode layer 31 and negative electrode layer 32 can also be directly connected to an external circuit. When the positive electrode layer 31 and negative electrode layer 32 are energized, current flows into the positive electrode layer 31, then through the resistive heating film layer 20, causing it to emit light and heat, and then flows out from the negative electrode layer 32. The electrode layer 30 enables the resistive heating film layer 20 to operate under power.

[0053] The resistance heating film layer 20 of the present invention has three embodiments:

[0054] Method 1: The resistive heating film layer 20 of the present invention is a nano-ATO light wave heating film.

[0055] The advantages of the nano-ATO light wave heating film include high light transmittance, high specific surface area, excellent electrical conductivity and high thermal stability, as well as excellent durability and chemical stability. This results in the light wave heating component 100 of the present invention exhibiting excellent electrothermal conversion efficiency.

[0056] In Method 1, the nano-ATO light-wave heating film is formed by depositing nano-ATO raw material on the light-transmitting substrate 10 through a film-forming process. The nano-ATO raw material comprises: 30%–50% stannous chloride or stannous tetrachloride, 0.5%–5% antimony trichloride, 0.5%–10% bismuth trioxide, 30%–65% anhydrous ethanol, 0.5%–8% magnesium chloride, 0.5%–9% manganese chloride, and an appropriate amount of inorganic acid. The film-forming process in Method 1 of this invention can be chemical deposition, spray pyrolysis, sputtering, evaporation, coating, etc.

[0057] Preferably, the nano-ATO raw material comprises: 35% stannous chloride or stannous tetrachloride, 2% antimony trichloride, 5% bismuth trioxide, 54% anhydrous ethanol, 0.5% magnesium chloride, 0.5% manganese chloride, and 3% inorganic acid. This composition ensures good film formation during the fabrication of the nano-ATO light-wave heating film, resulting in a nano-ATO light-wave heating film with good stability and low resistivity.

[0058] Method 2: The resistive heating film layer 20 of the present invention is applied to the light-transmitting substrate 10 by screen printing. The resistive paste comprises: 50% to 65% carbon powder or graphene powder, 0.5% to 5% terpineol, 0.5% to 10% glass powder, 30% to 40% high-temperature resin, and also includes appropriate amounts of acrylic acid, silane, polyether, etc.

[0059] Preferably, the resistive paste comprises: 55% carbon powder or graphene powder, 3% terpineol, 8% glass powder, and 32% high-temperature resin.

[0060] Method 3: The resistance heating film layer 20 of the present invention is made of a metal sheet and a light wave paste. The light wave paste includes at least one or more of calcium powder, magnesium powder, silicon carbide, manganese oxide, and ferrosilicon, and may also be coated with other materials. The light wave paste is placed on the metal sheet, which acts as a resistor and heats up when energized. The light wave paste, after being heated by energization, excites light waves and emits them outward.

[0061] Method 3 uses pure metal or metal alloy (such as nickel, 430 steel, iron-chromium-aluminum alloy, 316 steel, iron-nickel alloy, etc.) to make a thin sheet of 0.02mm to 0.03mm. Then, it is laminated on a high-temperature resistant substrate (such as polyimide, etc.) of 0.02mm to 0.05mm. The heating circuit is made by developing and etching. Then, the above-mentioned light wave paste is screen printed on its surface and sintered and cured to make a high-efficiency heating resistance heating film layer 20.

[0062] Preferably, the light wave heating assembly 100 of the present invention further includes a thin film thermally sensitive temperature layer 40 disposed on the electrode layer 30. As shown in FIG4, in this embodiment, the thin film thermally sensitive temperature layer 40 is disposed on the outside of the electrode layer 30 and covers the electrode layer 30. Since the electrode layer 30 is divided into a positive electrode layer 31 and a negative electrode layer 32 that are separated, the thin film thermally sensitive temperature layer 40 covers the resistance heating film layer 20 at the separated gap position. In this way, the thin film thermally sensitive temperature layer 40 can directly sense the temperature of the resistance heating film layer 20, or indirectly sense the temperature of the resistance heating film layer 20 by sensing the temperature of the electrode layer 30, and then feed the feedback to the external control circuit.

[0063] Currently, in existing aerosol-generating heating elements, the heating element is tubular and heats circumferentially. The temperature sensing element in the heating device is typically fixed to the heating element by wrapping it with double-sided tape. This method of fixing the temperature sensing element is not secure, and the element is prone to movement, leading to inaccurate temperature readings and affecting the heating effect of the device. Furthermore, existing temperature sensing elements generally use thermocouples or point-type thermistors. These elements make point contact with the heating element, measuring only a localized temperature. Temperatures in other areas of the heating element may be too high or too low to be detected, again resulting in inaccurate temperature readings.

[0064] This invention employs a thin-film thermally sensitive layer 40, which forms a film covering the periphery of the resistance heating film layer 20. It maintains surface contact with the resistance heating film layer 20 without becoming loose, thus ensuring accurate and stable temperature measurement. The thin-film thermally sensitive layer 40 can be equipped with electrode leads to connect to external circuits. Furthermore, the thin-film thermally sensitive layer 40 can be configured in sections, allowing for temperature monitoring of different areas of the resistance heating film layer 20, including detecting excessively high or low temperatures.

[0065] Preferably, in this embodiment of the invention, the thin-film thermally sensitive 40-layer is a sheet-like thin-film PTC thermistor. The traditional point-type thermistor or point-type thermocouple is replaced with a sheet-like thin-film PTC thermistor. This sheet-like thin-film thermistor is wrapped around the area requiring temperature sensing outside the resistance heating film layer 20, and then fixed with a high-temperature heat-shrink tubing. When the heating component is working, the higher its surface temperature, the closer the contact between the sheet-like thin-film PTC thermistor and the resistance heating film layer 20, resulting in more accurate temperature sensing, a larger sensing area, and more complete temperature data.

[0066] The fabrication process of the sheet-like thin-film PTC thermistor according to an embodiment of the present invention is as follows:

[0067] 1. Metals with a large TCR (temperature coefficient of resistance) and high resistivity (such as SUS430, SUS316, nickel, iron-nickel alloys, etc.) are made into thin sheets of 0.02 mm or less.

[0068] 2. Composite the metal sheet with a 0.02-0.05mm high-temperature resistant substrate (such as polyimide).

[0069] 3. Circuit etching: Etching out the desired pattern and resistance value.

[0070] 4. Solder the leads to complete the thin-film thermistor.

[0071] Furthermore, as shown in FIG4, the optical wave heating component 100 of the present invention further includes a reflective heat dissipation layer 50 disposed between the electrode layer 30 and the thin film heat-sensitive temperature layer 40.

[0072] The reflective heat-equalizing layer 50 allows a large number of light waves generated by the resistive heating film layer 20 to penetrate into the interior of the heated material through reflection, thereby heating the interior and achieving the effect of rapid heating and uniform internal and external temperature.

[0073] The reflective heat dissipation layer 50 can be made of materials such as graphene or high-temperature heat reflective coating.

[0074] Please continue referring to Figures 2 and 3. The resistive heating film layer 20 of the optical wave heating component 100 of the present invention includes multiple spaced regions. Each region is provided with a positive electrode layer 31 and a negative electrode layer 32 to provide independent power supply to each region. In this way, the resistive heating film layer 20 can be divided into different regions for individual heating, thereby achieving controllable heating of the entire optical wave heating component 100.

[0075] Most existing heat-not-burn electronic cigarettes use circumferential heating, resulting in a large heated area for the tobacco. During rapid preheating, the moisture in the tobacco vaporizes, causing a burning sensation when taking the first puff. This invention, by dividing the resistance heating film 20 into multiple independent heating zones, allows for controllable heating of the entire film 20. This enables adjustment of the generated aerosol temperature, preventing users from burning their mouths during use.

[0076] This invention divides the heating zone of the resistance heating film layer 20 into multiple regions (upper and lower zones and circumferential zones). During the preheating stage, all power can be concentrated in one region to allow some regions to heat up quickly, while other regions are heated slowly or only through conduction heating via the pipe wall. This allows for rapid smoke production and also ensures that the hot steam mixes with some cooler air during the first puff, thus solving the problem of scalding the mouth with steam. By the time the second puff is taken, the steam in the tobacco has completely evaporated, eliminating the problem of scalding the mouth.

[0077] Preferably, the multiple independent heating regions of the resistance heating film layer 20 of the light wave heating component 100 of the present invention are arranged longitudinally along the light-transmitting substrate 10, thereby forming a segmented heating method.

[0078] As shown in Figures 2 and 3, in this embodiment, the resistance heating film layer 20 is divided into three independent heating regions 23, 24, and 25 from top to bottom on the tubular light-transmitting substrate 10. Each heating region 23, 24, and 25 has its own positive electrode layer 31 and negative electrode layer 32 for individual power control. For example, to prevent burning the mouth during the first puff, the heating functions of the first and second heating regions 23 and 24 can be turned off, and only the third heating region 25 can be used. The third heating region 25 heats the tobacco inside the light-transmitting substrate 10. The moisture in the tobacco is vaporized into high-temperature water vapor, which cools down after flowing upwards through the low-temperature regions inside the light-transmitting substrate 10 corresponding to the second and first heating regions 24 and 23, thus preventing burning the mouth during the first puff. It is understood that in other embodiments, the resistance heating film layer 20 can also be divided into multiple independent regions such as 2, 4, 5, and 6 from top to bottom. In other embodiments, the resistance heating film layer 20 can also be divided into multiple independent regions such as 2, 3, 4, 5, 6, etc. from left to right.

[0079] Preferably, each region of the resistive heating film layer 20 of the present invention is provided with an independent thin film heat-sensitive temperature layer 40 to independently monitor the heating temperature of each region.

[0080] The light wave heating component 100 of the present invention has at least three processing methods:

[0081] Option 1: A nano-ATO light wave heating film is deposited on the outer surface of a tubular high-temperature resistant light-transmitting substrate 10 (quartz glass, borosilicate glass, etc.). Electrodes are screen-printed on the surface of this light wave heating film for power supply (the electrode pattern can be made into upper and lower electrodes, left and right electrodes, and irregularly shaped electrodes according to actual needs). The heating film layer can be divided into multiple regions (left and right partitions, upper and lower partitions). When powered by the electrodes, this heating film has high-efficiency heating capacity and light wave emission and penetration capability. When it is necessary to heat the tobacco inside the tube, the heating film heats up rapidly under the drive of electricity, so that the heating surface of the substrate 10 fully contacts the material to be heated. At the same time, a light wave reflective heat-equalizing layer is set or screen-printed on the electrode layer outside the light-transmitting heating tube substrate. This allows a large number of light waves generated by the heating film to penetrate into the interior of the heated material through the reflection film of the reflective heat-equalizing layer or the reflection film of the aerosol generation component, thereby heating the interior and achieving the effect of rapid heating and uniform internal and external temperature.

[0082] Scheme 1 process flow:

[0083] Preparation of raw material solution for nano ATO light wave heating film -> Cleaning of transparent substrate -> Sanding (or not sanding) -> Cleaning -> Spraying / coating (number of spraying times determined according to actual needs) -> Film removal -> Electrode printing -> Sintering -> Opening positioning grooves -> Screen printing infrared reflective heat dissipation layer.

[0084] Option 2: A resistance heating film layer is obtained by screen printing a resistance paste on the outer surface of a tubular transparent substrate 10 (quartz glass or borosilicate glass) and sintering it at high temperature. Then, positive and negative electrodes are screen printed on the sintered resistance film layer and sintered again. This heating film layer has high-efficiency heating capacity and light wave emission and penetration capability. When it is necessary to heat the tobacco inside the tube, the heating film layer heats up rapidly under the drive of the electrode power supply, so that the heating surface of the substrate 10 fully contacts the material to be heated. A light wave reflective heat-equalizing layer is set or screen printed on the outer side of the electrode layer of the transparent heating tube substrate. The large amount of light waves generated by the heating film penetrates into the interior of the heated material through the reflection film of the reflective heat-equalizing layer or the reflection film of the aerosol generation component, thereby heating the interior and achieving the effect of rapid heating and uniform internal and external temperature.

[0085] Option 2 process flow:

[0086] Resistance paste preparation -> Light-transmitting substrate cleaning -> Sanding -> Cleaning -> Drying -> Heating film screen printing -> Heating film layer sintering -> Electrode screen printing -> Electrode sintering -> Opening positioning grooves -> Screen printing or installing heating and heat-equalizing layer.

[0087] Option 3: Pure metals or metal alloys (such as nickel, 430 steel, iron-chromium-aluminum alloy, 316 steel, iron-nickel alloy, etc.) are made into thin sheets of 0.02mm to 0.03mm. These sheets are then laminated onto a 0.02mm to 0.05mm high-temperature resistant substrate (such as polyimide). A heating circuit is formed through development and etching. Infrared light wave paste is then screen-printed onto the surface and sintered to solidify, creating a high-efficiency heating film. Finally, this film is fixed onto a tubular transparent substrate 10 (quartz glass, high borosilicate glass). This heating film also possesses high-efficiency heating capacity and light wave emission and penetration capability. Simultaneously, a light wave reflective film is applied to the electrode layer outside the transparent heating tube substrate. This allows the large amount of light waves generated by the heating film to penetrate into the interior of the heated material through reflection, heating its interior and achieving rapid heating and uniform internal and external temperatures.

[0088] Option 3 process flow:

[0089] Ultra-thin metal or alloy heating element manufacturing -> Heating element and high-temperature resistant material composite -> Etching (developing) circuit manufacturing -> Light wave paste screen printing -> Sintering -> Electrode welding -> Heating film fixed on quartz or borosilicate glass -> Reflective film or reflective sleeve installed and fixed.

[0090] Referring to Figures 5 and 6, the present invention also proposes an aerosol generating device 200, which includes the aforementioned light wave heating component 100. Thus, the aerosol generating device 200 of this embodiment can heat tobacco or other substances through the thermal radiation of light waves, thereby achieving high electro-thermal conversion efficiency and uniform heating.

[0091] Specifically, the aerosol generating device 200 further includes a heat insulation tube 201, an upper support 202, a lower support 203, and an air inlet support 204. The light wave heating component 100 is housed in the heat insulation tube 201. The upper support 202 and the lower support 203 are respectively sealed at both ends of the heat insulation tube 201, and the air inlet support 204 is provided at the bottom of the lower support 203.

[0092] The heat insulation pipe 201 can isolate and protect the light wave heating component 100, while reducing the heat loss of the light wave heating component 100 inside, improving heating efficiency, and protecting the surrounding components from high temperature.

[0093] The upper bracket 202 and lower bracket 203 are used for support and fixation, facilitating the installation of the aerosol generating device 200 into devices such as electronic cigarettes. Preferably, both the upper bracket 202 and lower bracket 203 of the present invention are made of PEEK. PEEK is a high-performance special engineering plastic with advantages such as high temperature resistance and good mechanical properties.

[0094] The air intake bracket 204 is used for the air intake of the entire aerosol generating device 200. During the suction, the gas enters the heat insulation tube 201 from the air intake bracket 204 and flows through the light wave heating component 100.

[0095] Preferably, in this embodiment of the invention, the connections between the upper support 202, the lower support 203, and the heat insulation pipe 201 are all provided with an upper sealing ring 205, as shown in Figure 6, and a lower sealing ring 206 is provided at the connection between the upper support 202 and the heat insulation pipe 201. The upper sealing ring 205 and the lower sealing ring 206 can be made of silicone. The upper sealing ring 205 and the lower sealing ring 206 enhance the airtightness of the aerosol generating device 200 and prevent air leakage.

[0096] The light wave heating component 100 and aerosol generating device 200 of this invention can heat the tobacco inside the tube with the maximum contact area, making the heated material more uniformly heated. In addition, because the substrate 10 of the heating component 100 is transparent and the resistance heating film layer 20 can emit light waves, a large number of emitted light waves penetrate the gap between the transparent substrate 10 and the tobacco, reaching the center of the heated tobacco. The light wave wavelength has strong penetrating power and easily resonates with the tobacco molecules, making the heated tobacco uniformly heated inside and out, thereby achieving the ideal aerosol generation effect.

[0097] The above description is merely an example to clearly illustrate the present invention and is not intended to limit the patent scope of the present invention. It is impossible to exhaustively list all embodiments here. All equivalent structural transformations made using the content of the technical solution of the present invention under the concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A light wave heating assembly, characterized by, include: A light-transmitting substrate, wherein the light-transmitting substrate has an inner surface and an outer surface; A resistance heating film layer is disposed on the outer or inner surface of the light-transmitting substrate; An electrode layer is disposed on the side of the resistive heating film layer away from the light-transmitting substrate, and the electrode layer includes a positive electrode layer and a negative electrode layer disposed separately on the resistive heating film layer; When the resistance heating film is energized, it emits light waves that pass through the light-transmitting substrate to heat the material to be heated on the inner or outer surface of the light-transmitting substrate.

2. The light wave heating assembly of claim 1, wherein, It also includes a thin film heat-sensitive temperature layer disposed on the electrode layer.

3. A light wave heating assembly according to claim 2, wherein, It also includes a reflective heat-equalizing layer disposed between the electrode layer and the thin-film heat-sensitive temperature layer.

4. The light wave heating assembly of claim 1, wherein, The light-transmitting substrate has a tubular structure.

5. The light wave heating assembly of claim 1, wherein, The resistance heating film layer includes multiple spaced regions, each region having a positive electrode layer and a negative electrode layer to provide independent power to each region.

6. The light wave heating assembly of claim 1, wherein, The resistive heating film is a nano-ATO light wave heating film.

7. A light wave heating assembly according to claim 6, wherein The nano-ATO light wave heating film is formed by depositing nano-ATO raw material on the light-transmitting substrate through a film-forming process. The components of the nano-ATO raw material include: 30% to 50% stannous chloride or stannous tetrachloride, 0.5% to 5% antimony trichloride, 0.5% to 10% bismuth trioxide, 30% to 65% anhydrous ethanol, 0.5% to 8% magnesium chloride, and 0.5% to 9% manganese chloride.

8. The light wave heating assembly of claim 1, wherein, The resistance heating film layer is formed by screen printing resistance paste onto the light-transmitting substrate. The resistance paste comprises: 50%–65% carbon powder or graphene powder, 0.5%–5% terpineol, 0.5%–10% glass powder, and 30%–40% high-temperature resin.

9. The light wave heating assembly of claim 1, wherein, The resistance heating film is made of metal sheet and light wave paste, and the light wave paste includes at least one or more of calcium powder, magnesium powder, silicon carbide, manganese oxide, and ferrosilicon.

10. The light wave heating assembly of claim 2, wherein, The thin-film thermally sensitive temperature layer is a sheet-like thin-film PTC thermistor.

11. An aerosol-generating device comprising: Includes the light wave heating component as described in any one of claims 1-10. 12.The aerosol-generating device of claim 11, wherein, The aerosol generating device also includes a heat insulation pipe, an upper support, a lower support, and an air inlet support; The light wave heating component is housed inside the heat insulation tube. The upper support and lower support are respectively sealed at both ends of the heat insulation tube, and the air intake support is provided at the bottom of the lower support.

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