Aerosol generating system comprising a RF / microwave heating device and an article with capsule
The RF/microwave heating of aerosol generating capsules in HNB products addresses uneven heating and slow release issues, achieving rapid and efficient aerosol generation with reduced harmful substances.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SHENZHEN HUABAO COLLABORATIVE INNOVATION TECH RES INST CO LTD
- Filing Date
- 2025-02-28
- Publication Date
- 2026-05-21
AI Technical Summary
Existing aerosol generating systems, particularly Heat Not Burn (HNB) products, face challenges such as uneven heating, slow heating rates, and the issue of core material outflow from capsules, leading to inefficient aerosol generation and potential health risks from harmful substances.
An aerosol generating system utilizing an RF/microwave heating device to directly heat aerosol generating capsules, composed of a core material and shell, which includes propylene glycol and glycerol, to rapidly vaporize and burst the capsule, ensuring rapid aerosol release while minimizing harmful substance generation.
The RF/microwave heating method enhances aerosol generation efficiency, reduces harmful substance production, and improves user experience by ensuring consistent and rapid aerosol delivery.
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Figure CN2025079802_21052026_PF_FP_ABST
Abstract
Description
AEROSOL GENERATING SYSTEM AND ARTICLE
[0001] This application claims the benefit of priority to Chinese Patent Application No. 2024116444735, filed on November 15, 2024 with China National Intellectual Property Administration, and entitled “AEROSOL GENERATING SYSTEM AND ARTICLE” , the entire disclosure of which is incorporated herein by reference.TECHNICAL FIELD
[0002] The present disclosure relates to the technical field of tobacco products, and more particularly, to an aerosol generating system and article.BACKGROUND
[0003] Aerosol generating articles, such as modern electronic cigarettes or heat not burn products, are gradually emerging as alternatives to traditional tobacco articles and are designed to provide users with a safer and cleaner smoking experience.
[0004] Traditional tobacco articles rely on combustion to produce aerosol, which are often accompanied with generation of large amounts of harmful substances. For example, burning tobacco may release a variety of harmful substances, such as, tar, carbon monoxide, and heavy metals, and the like, which pose a serious threat to human health. Therefore, there are obvious shortcomings in safety of an aerosol generating technology by means of combustion.
[0005] Heat Not Burn (HNB) , also known as low temperature cigarette, is a novel type of tobacco product that incorporates a heating appliance and a cartridge, which is designed with an idea of “only heating but not burning" and is exemplified as “low temperature cigarettes” . The low temperature cigarettes can heat processed reconstituted tobacco (such as, a special cartridge) utilizing a special heating device (such as, smoking paraphernalia) to a certain temperature and to such an extent that the reconstituted tobacco is heated sufficiently to emit smoke for consumption. The HNB has advantages in that it is more harmless and restores a pure taste and throat sensation of a cigarette, and can provide smokers with a nearest alternative to traditional cigarettes.
[0006] Aerosol generating systems associated with the HNB convert an aerosol generating material containing nicotine, a flavor and other ingredients into aerosol for users to inhale through different heating mechanisms. However, while these novel aerosol generating articles have made significant progress in reducing harmful substances, there are still many challenges to existing technologies. For example, some HNB systems heat the aerosol generating material by means of air heating or medium heating (such as, patches) , etc., these methods, however, often have problems of uneven heating and slow heating rate in practical applications. Uneven heating may lead to poor aerosol generating effect and affect user experience. Slow heating rate limits efficiency and speed of aerosol generation, which makes users have to wait longer to get desired aerosol.
[0007] In addition, the prior art has proposed that a capsule coated with propylene glycol / glycerol is used as an aerosol generating material. However, most of the related technologies only use the capsule as a part of an aerosol generating material. Some patents also refer to that a pure capsule is used directly as an aerosol generating material and placed in an aerosol generating substrate segment, where a single capsule is used and there is a need to address a problem of core material outflow after capsule rupture, for example, by absorbing the core material of the capsule using an absorbent pad. None of the relevant technical literature clearly proposes how to efficiently heat an aerosol generating capsule to improve release speed of aerosol, nor does it solve a series of technical problems when a capsule is directly used as an aerosol generating material.SUMMARY
[0008] Embodiments of the present disclosure can improve the speed of aerosol generation while reducing generation of harmful substances, and can further improve efficiency of release by heat especially when an aerosol generating capsule is used as an aerosol generating material.
[0009] The embodiments of the present disclosure provide an HNB release system by heat, namely an aerosol generating system. The aerosol generating system includes an aerosol generating article and a RF (radio frequency) / microwave heating device for heating the aerosol generating article. The aerosol generating article includes an aerosol generating substrate segment including an aerosol generating capsule. The aerosol generating substrate segment of the aerosol generating article is inserted into the RF / microwave heating device. The RF / microwave heating device generates a RF / microwave acting on the aerosol generating capsule to heat the aerosol generating capsule. The capsule is commonly known as seamless capsule and is typically spherical. Based on characteristics of RF / microwave heating, the RF / microwave can penetrate a shell of the aerosol generating capsule to directly act on, rapidly heat up and burst a core material inside the capsule, especially polar small molecules of propylene glycol and glycerol in the core material, thereby generating aerosol. This heating method has a higher heating efficiency as compared with conventional heating methods, which ensures rapid generation of aerosol. In addition, RF / microwaves generally have a limited vibration effect and heating effect on polymer and solid materials, and the shell of the capsule is commonly made of a polymer solid material and thus heats up slowly in a RF / microwave heating environment. Compared with traditional heating methods where heat is transferred through the shell to the core material, RF / microwave heating reduces undesired harmful substances generated by long-term heating of the shell.
[0010] According to some embodiments, the aerosol generating capsule includes a core material and a shell encapsulating the core material, and the core material is a colloid, a paste or a solid-liquid mixture. The core material in form of liquid has good fluidity, and is not easy to adhere to the shell of the capsule. If the core material is not a pure liquid or has certain viscosity, it is easier to adhere to the shell of the capsule even after being heated, which can effectively avoid the core material from flowing out from the aerosol generating article.
[0011] According to some embodiments, the aerosol generating capsule includes a core material and a shell encapsulating the core material, and the core material includes at least one of propylene glycol and glycerol. In some embodiments, the core material includes both propylene glycol and glycerol. Propylene glycol and glycerol are common aerosol generating agents, and a combination of the two can achieve a balance between rapid release and smoke effect, and achieve a purpose of releasing a sufficient amount of smoke at a low temperature.
[0012] According to some embodiments, the aerosol generating capsule includes a core material and a shell encapsulating the core material, and the shell has a thickness of 50 μm to 150 μm. A higher thickness of the shell may increase difficulty of the capsule to crack when heated, and reduce release rate. A lower thickness of the shell may cause that the capsule has an insufficient strength and is not easy to prepare and process.
[0013] According to some embodiments, the aerosol generating capsule has a particle size of 1 mm to 3 mm. In some embodiments, the aerosol generating capsule has a particle size of 1.5 mm to 2.5 mm. When amount of released smoke is designed to be the same, if the capsule has a too small particle size, then each capsule has a low amount of the core material, and thus, although uniformity of release may be improved, a reduced carrying capacity of an aerosol generating agent may also be caused, and at the same time, filling void volume fraction may also be reduced, which may both have an adverse effect on smoke release effect. Therefore, an appropriate particle size, especially a moderate particle size, can ensure a good smoking experience, and at the same time, can also avoid a problem of the core material of the capsule with a large particle size flowing out from the aerosol generating article.
[0014] According to some embodiments, the aerosol generating capsule has a filling amount of 0.05 g to 0.5 g. In some embodiments, the aerosol generating capsule has a filling amount of 0.1 g to 0.3 g. At a certain amount of released smoke, a higher filling amount may lead to a waste of material, and a lower filling amount may reduce persistence of aerosol generation, thus, a moderate filling amount can ensure a good smoking sensation.
[0015] According to some embodiments, the aerosol generating capsule has a filling amount of 5 capsules to 100 capsules. In some embodiments, the aerosol generating capsule has a filling amount of 15 capsules to 30 capsules. When amount of released smoke is designed to be the same, a lower number of the capsules may lead to too much core material per capsule, which can easily cause the core material to flow out from the aerosol generating article; a higher number of the capsules may lead to an increase in draw resistance, which will affect smoking experience; and at the same time, a moderate filling amount can also ensure a uniform aerosol release.
[0016] According to some embodiments, the aerosol generating substrate segment does not include other aerosol generating materials than the aerosol generating capsule. Since different aerosol generating materials have inconsistent temperatures of release by heat, the aerosol generating capsule can release at a lower temperature, and the temperature of release by heat can be thus further reduced. Use of a single type of aerosol generating material, such as, an aerosol generating capsule, can employ a lower temperature of release by heat while maintaining release speed, to save energy consumption and reduce a potential hazardous ingredient released at a high temperature.
[0017] According to some embodiments, the RF / microwave heating device transmits a RF / microwave frequency capable of making a propylene glycol or glycerol molecule vibrate. Based on a principle of RF / microwave heating, heating efficiency will be higher when the RF / microwave frequency can make a propylene glycol or glycerol molecule vibrate more effectively.
[0018] According to some embodiments, the RF / microwave heating device transmits one or more RF / microwave frequencies selected from a group consisting of 433MHz, 868MHz, 902MHz ~ 928MHz, 2400MHz ~ 2484.5MHz and 5725MHz ~ 5850MHz. The above frequencies belong to civil RF / microwave frequencies and can be used freely with a low transmitting power.
[0019] According to some embodiments, the RF / microwave heating device transmits a RF / microwave with a power of 1W~20W. In consideration of needs of heating efficiency and release uniformity, the RF / microwave transmitting power can fluctuate within a certain range and can also be adjusted with a heating release stage in an actual heating process.
[0020] According to some embodiments, the aerosol generating article further includes an electromagnetic protection element provided downstream of the aerosol generating substrate segment. Although the RF / microwave heating device has been carefully protected in radiation, in order to further reduce propagation leakage of RF / microwave from a section of an aerosol tube to the outside, the electromagnetic protection element can be provided downstream of the aerosol generating substrate segment. The downstream refers to a downstream of an aerosol flow in use of the aerosol generating article.
[0021] According to some embodiments, the aerosol generating article further includes a fixed part that limits filling space of the aerosol generating capsule, and the electromagnetic protection element is provided at an end of the fixed part. The electromagnetic protection element is provided at an end of the fixed part, such as fixed at an end of the fixed part, which is more convenient for manufacturing.
[0022] According to some embodiments, the electromagnetic protection element is provided at an end, adjacent to the aerosol generating substrate segment, of the fixed part. In order to improve effectiveness of the electromagnetic protection element, the electromagnetic protection element is provided at an end, adjacent to the aerosol generating substrate segment, of the fixed part, which can further reduce possibility of electromagnetic wave leakage.
[0023] According to some embodiments, the electromagnetic protection element is a metal mesh. The metal mesh has good air permeability and a sufficient electromagnetic protection effect, which can take into account needs of gas flow and requirements of protection against RF / microwave radiation.
[0024] The present disclosure further provides an aerosol generating article. The aerosol generating article includes an aerosol generating substrate segment and an electromagnetic protection element provided downstream of the aerosol generating substrate segment. The aerosol generating article is preferably a heat-not-burn (HNB) product, also referred to as a heated tobacco product (HTP) , low-temperature cigarette product, or generically as a heated product.
[0025] According to some embodiments, the aerosol generating article further includes a filter segment, and the electromagnetic protection element is provided between the aerosol generating substrate segment and the filter segment.
[0026] According to some embodiments, the aerosol generating article further includes a fixed part that limits filling space of the aerosol generating substrate segment, and the electromagnetic protection element is provided at an end of the fixed part.
[0027] According to some embodiments, the electromagnetic protection element is provided at an end, adjacent to the aerosol generating substrate segment, of the fixed part.
[0028] According to some embodiments, the electromagnetic protection element is a metal mesh.
[0029] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule. The aerosol generating capsule includes a core material and a shell encapsulating the core material, and the core material is a liquid.
[0030] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule. The aerosol generating capsule includes a core material and a shell encapsulating the core material, and the core material is a colloid, a paste or a solid-liquid mixture.
[0031] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule. The aerosol generating capsule includes a core material and a shell encapsulating the core material, and the core material includes at least one of propylene glycol and glycerol.
[0032] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule. The aerosol generating capsule includes a core material and a shell encapsulating the core material, and the shell has a thickness of 50 μm to 150 μm.
[0033] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule, and the aerosol generating capsule has a particle size of 1mm to 3mm. In some embodiments, the aerosol generating capsule has a particle size of 1.5 mm to 2.5 mm.
[0034] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule, and the aerosol generating capsule has a filling amount of 0.05 g to 0.5 g. In some embodiments, the aerosol generating capsule has a filling amount of 0.1 g to 0.3 g.
[0035] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule, and the aerosol generating capsule has a filling amount of 5 capsules to 100 capsules. In some embodiments, the aerosol generating capsule has a filling amount of 15 capsules to 30 capsules.
[0036] According to some embodiments, the aerosol generating substrate segment includes an aerosol generating capsule and does not include other aerosol generating materials.
[0037] In the prior art, aerosol generating materials used in HNB products are mainly laminated tobacco, tobacco materials in form of granules and solid tobacco materials with designed structures, which are all solid substances and have relatively low heating efficiency upon RF / microwave heating. In the embodiments of the present disclosure, an aerosol generating capsule is used as an aerosol generating material, the core material inside the capsule is a liquid or a colloid, etc., and has a higher heating speed in RF / microwave heating, such that advantages of RF / microwave heating can be fully utilized. In addition, existing heating systems for aerosol generating capsules functions by means of heat transfer. The heat transfer is relatively slow. While RF / microwave can directly heat polar molecules in the core material, and thus has higher heating efficiency than traditional heating methods, and can effectively improve a release rate of aerosol.BRIEF DESCRIPTION OF THE DRAWINGS
[0038] FIG. 1 is a schematic view of an aerosol generating system according to an embodiment of the present disclosure.
[0039] FIG. 2 is a schematic view of an aerosol generating article in FIG. 1.DETAILED DESCRIPTION
[0040] As mentioned in the BACKGROUND, existing HNB aerosol generating systems heat aerosol generating materials mainly through heat transfer, which has defects of slow heating rate and easy to produce undesired harmful substances.
[0041] The embodiments of the present disclosure provide an aerosol generating system. The aerosol generating system includes an aerosol generating article and a RF / microwave heating device for heating the aerosol generating article. The aerosol generating article includes an aerosol generating substrate segment including an aerosol generating capsule. The aerosol generating substrate segment of the aerosol generating article is inserted into the RF / microwave heating device. The RF / microwave heating device generates a RF / microwave acting on the aerosol generating capsule to heat the aerosol generating capsule.
[0042] In the aerosol generating system according to the embodiments of the present disclosure, the RF / microwave heating device is used to heat the aerosol generating capsule, which can realize an effect of rapid heating and release.
[0043] In order to make the above-mentioned purposes, features and beneficial effects of the present disclosure obvious and more understandable, specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings.
[0044] FIG. 1 is a schematic view of an aerosol generating system according to an embodiment of the present disclosure. FIG. 2 is a schematic view of an aerosol generating article in FIG. 1.
[0045] As shown in FIGs. 1 and 2, in some embodiments, the aerosol generating system may include an aerosol generating article 10 and a RF / microwave heating device QM for heating the aerosol generating article 10. The aerosol generating article 10 includes an aerosol generating substrate segment 101 including an aerosol generating capsule 104. The aerosol generating substrate segment 101 of the aerosol generating article 10 is inserted into the RF / microwave heating device QM. The RF / microwave heating device QM generates a RF / microwave acting on the aerosol generating capsule 104 to heat the aerosol generating capsule 104.
[0046] Further, the aerosol generating capsule 104 filled in the aerosol generating substrate segment 101 is capable of bursting when heated and generating aerosol that can be inhaled by a user.
[0047] In a typical application scenario, when the aerosol generating capsule 104 is heated by an external heat source, volatile ingredients in the aerosol generating capsule 104 begin to be vaporized. These ingredients can include, for example, nicotine, flavors, glycerol, and the like, which gradually change from a solid or liquid state (or a state of solid-liquid mixture) to a gaseous state during heating. Further, vaporized volatile ingredients are cooled in air and condense into tiny particles which are components of aerosol. Formed aerosol particles are inhaled into a lung by a user through an action of smoking. During inhalation, the aerosol particles can be deposited in a respiratory tract and release active ingredients therein, such as nicotine, and the like.
[0048] In some embodiments, the aerosol generating capsule 104 includes a core material and a shell encapsulating the core material. The shells of the aerosol generating capsules 104 are capable of rupturing when temperature meets a certain condition, to release the core material and generate aerosol. In traditional heating methods, a temperature of release by heat for the aerosol generating capsule is generally 180 ℃ to 300 ℃, preferably 200 ℃ to 250 ℃. The temperature of release by heat for the aerosol generating capsule is related to a material and thickness of the shell of the aerosol generating capsule.
[0049] Further, the RF / microwave heating device QM is capable of generating a RF / microwave. The RF / microwave is directed to act on the aerosol generating capsule 104 in the aerosol generating substrate segment 101. More specifically, permeability of the RF / microwave allows it to act directly on the core material inside the aerosol generating capsule 104, without heating the aerosol generating article 10 or the surrounding environment and then conducting heat to the core material through the shell of the capsule.
[0050] In a typical application scenario, the RF / microwave generated by the RF / microwave heating device QM acts on the aerosol generated capsule 104 and rapidly heats up and vaporizes the core material. With vaporization of the core material, a pressure in the aerosol generating capsule 104 increases, which eventually causes the aerosol generating capsule 104 to burst and release aerosol.
[0051] In view of the above, under action of the RF / microwave, the core material in the aerosol generating capsule 104 rapidly heats up and ruptures the shell, thereby releasing an aerosol generating substance contained therein. Due to rapidity of RF / microwave heating, this rupture process can be completed in a short time, which increases efficiency of aerosol generation. At the same time, because the RF / microwave directly acts on the core material of the aerosol generating capsule 104, the RF / microwave heating process will not cause a temperature of the shell to rise rapidly, thereby reducing undesired harmful substances produced in high-temperature heating (or long-term heating) of the shell.
[0052] In some embodiments, a frequency band of the RF / microwave generated by the RF / microwave heating device QM is determined according to material of the core material.
[0053] Specifically, a basic principle of RF / microwave heating is to use dielectric loss of RF / microwaves in a substance to generate heat. Ability of the core materials made of different materials to absorb RF / microwaves varies depending on their dielectric properties. Therefore, in order to maximize the efficiency of RF / microwave heating, it is necessary to select an appropriate RF / microwave frequency band according to a dielectric property of a specific material of the core material.
[0054] In some embodiments, the frequency band of the RF / microwave can be adjusted according to a specific material and a ratio of different materials in the core material.
[0055] In some embodiments, the core material includes at least one of propylene glycol and glycerol.
[0056] In some embodiments, the RF / microwave heating device QM transmits a RF / microwave frequency capable of making a propylene glycol or glycerol molecule vibrate.
[0057] In some embodiments, the RF / microwave heating device QM transmits one or more RF / microwave frequencies selected from a group consisting of 433MHz, 868MHz, 902MHz ~928MHz, 2400MHz ~ 2484.5MHz and 5725MHz ~ 5850MHz. The above frequencies belong to civil RF / microwave frequencies and can be used freely with a low transmitting power.
[0058] In some embodiments, the RF / microwave heating device QM transmits a RF / microwave with a power of 1W~20W. Thus, it can be ensured that the aerosol generating capsule 104 is rapidly heated and burst to timely meet requirements of a user.
[0059] In some embodiments, the core material of the aerosol generating capsule 104 is a liquid.
[0060] In some embodiments, the core material of the aerosol generating capsule 104 is a paste, a colloid, or a solid-liquid mixture.
[0061] In some embodiments, the core material may include a hydrophilic liquid formulation. The hydrophilic liquid formulation contains an aerosol generating substance releasable by heat. The aerosol generating substance includes propylene glycol and glycerol. The shell includes a gelling agent. The gelling agent is at least one selected from a group consisting of animal gel, vegetable gel, microbial gel, starch and modified starch. The aerosol generating capsule 104 includes only one layer of the shell.
[0062] In some specific embodiments, the hydrophilic liquid formulation is water or a liquid formulation that can be uniformly dispersed in water molecules to form a solution, and specifically, may be for example, ethanol, glycerol, or propylene glycol, or the like.
[0063] In some specific embodiments, the hydrophilic liquid formulation accounts for 5 wt%to 60wt%of a weight of the core material. In some specific embodiments, the hydrophilic liquid formulation accounts for 15 wt%to 50 wt%of a weight of the core material. In some specific embodiments, the hydrophilic liquid formulation accounts for 25 wt%to 45 wt%, and specifically, may accounts for, for example, 25 wt%, 30 wt%, 35 wt%, 40 wt%, or 45wt%, or the like, of a weight of the core material.
[0064] In some specific embodiments, propylene glycol and glycerol account for above 80 wt%of a total weight of the hydrophilic liquid formulation. In some specific embodiments, propylene glycol and glycerol account for above 85 wt%of a total weight of the hydrophilic liquid formulation. In some specific embodiments, propylene glycol and glycerol account for above 90 wt%of a total weight of the hydrophilic liquid formulation. In some specific embodiments, propylene glycol and glycerol account for above 95 wt%of a total weight of the hydrophilic liquid formulation. In some specific embodiments, propylene glycol and glycerol account for 100 wt%of a total weight of the hydrophilic liquid formulation.
[0065] In some specific embodiments, the core material further contains 0.1 wt to 20 wt%of a flavor, an extract, nicotine and / or nicotine salt. The extract may be an animal extract and / or a plant extract, such as, musk, ambergris, a tea extract, or a fructus momordicae extract, or the like.
[0066] In some specific embodiments, the core material further contains a lipophilic formulation and a structuring agent. The structuring agent includes cellulose and / or cellulose derivatives, a low molecular weight lipid and a surfactant. The core material is a paste, a colloid or a solid-liquid mixture. Combination of cellulose and / or cellulose derivatives and the low molecular weight lipid is conducive to forming a network structure beneficial to dispersion and fixation of propylene glycol and glycerol in the lipophilic formulation. The surfactant is conducive to forming an oil film between the core material and the shell layer, thereby helping to realize the shell encapsulating the core material. The core material formed by propylene glycol and glycerol, the lipophilic formulation and the structuring agent is a paste, a colloid or a solid-liquid mixture at room temperature (25 ℃) , which is conducive to realizing the shell stably encapsulating the core material.
[0067] It should be clear that use of the lipophilic formulation and the structuring agent in the core material is only a means of encapsulating propylene glycol and glycerol. In order to encapsulate propylene glycol and glycerol, known encapsulating methods in the prior art, such as, photocuring dropping methods, coating rounding methods, frozen coating methods, coagulation methods, and the like may be applied.
[0068] In some embodiments, the shell of the aerosol generating capsule has a thickness of 50 μm to 150 μm.
[0069] In consideration of influence of the thickness of the shell on a strength and aerosol release of the aerosol generating capsule 104, in some specific embodiments, the thickness of the shell is 50 μm to 150 μm, and specifically, for example, may be 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, or 150 μm, or the like. Thus, structural stability and heating efficiency of the aerosol generating capsule 104 can be ensured, but also high-quality aerosol can be generated. At the same time, this range also provides some flexibility to allow fine-tuning according to different compositions of the core material, heating conditions and product requirements.
[0070] In consideration of the release effect of aerosol, in some specific embodiments, the aerosol generating capsule 104 has a particle size of 1 mm to 3 mm. Specifically, the particle size may be, for example, 1 mm, 1.5 mm, 2 mm, 2.5 mm, or 3mm, or the like.
[0071] In some embodiments, the particle size of the aerosol generating capsule 104 is 1.5 mm to 2.5 mm.
[0072] In one specific embodiment, the particle size of at least one of the aerosol generating capsules 104 is different from those of the other aerosol generating capsules 104.
[0073] In consideration of user's single use time (e.g., characterized by the number of inhalable times) of the aerosol generating article 10, in some specific embodiments, the aerosol generating capsule 104 has a filling amount of 0.05 g to 0.5 g. Specifically, the filling amount may be, for example, 0.05 g, 0.1 g, 0.15 g, 0.2 g, 0.25 g, 0.3 g, 0.35 g, 0.4 g, 0.45 g, or 0.5 g, or the like.
[0074] In some embodiments, the filling amount of the aerosol generating capsule 104 is 0.1 g to 0.3 g.
[0075] In some specific embodiments, the aerosol generating capsule 104 has a filling amount of 5 capsules to 100 capsules. Specifically, the filling amount may be, for example, 5 capsules, 10 capsules, 15 capsules, 20 capsules, 25 capsules, 30 capsules, 35 capsules, 40 capsules, 45 capsules, 50 capsules, 60 capsules, 70 capsules, 80 capsules, or 90 capsules, or the like.
[0076] In some embodiments, the filling amount of the aerosol generating capsule 104 is 15 capsules to 30 capsules.
[0077] In some embodiments, the aerosol generating substrate segment 101 does not include other aerosol generating materials than the aerosol generating capsule 104.
[0078] From the above, through reasonable design of the shell thickness, particle size and filling amount of the aerosol generating capsule 104, the heating efficiency, external size and single use time can be taken into account at the same time, performance of the aerosol generating system can be optimized, and user experience can be improved.
[0079] The aerosol generating capsule according to the embodiments of the present disclosure can be prepared by various methods, such as, the following method, and the like.
[0080] 40 weight parts of sunflower seed oil was heated to 100 ℃, and then, 7.1 weight parts of ethyl cellulose, 1.4 weight parts of beeswax, and 2.1 weight parts of palm wax were added therein while stirring, dissolved, and mixed well. Thereafter, the mixture was cooled to 60 ℃, and 24 weight parts of propylene glycol, 16 weight parts of glycerol, 2.4 weight parts of surfactant (prepared by Tween 80 and glycerol monooleate in a weight ratio of 1: 9) , 5 weight parts of mango flavor, and 2 weight parts of nicotine salt were added therein and stirred well, to complete preparation of the core material.
[0081] 5 weight parts of carrageenan and 3 weight parts of gellan gum were put into 82 weight parts of purified water, and heated at a temperature of 60 ℃ to 90 ℃ while stirring, to form a uniform solution. And then, 10 weight parts of glycerol was added and stirred well, to prepare a shell liquid.
[0082] The core material (inner layer) and the shell liquid were dropped into a liquid coolant (MCT) through a concentric dropper at a temperature controlled at 10 ℃ to 25 ℃, to form a wet capsule. Then, the wet capsule was stored at -10 ℃ to 10 ℃ for 10 hours, and dried at 20 ℃ to 30 ℃ and 20%to 50%humidity, to prepare a capsule article with a particle size of 2 mm and a shell thickness of 70 μm.
[0083] The RF / microwave heating device QM may be designed by prior art, and generally include a RF / microwave heating chamber QM1 and a power supply and control module QM2. The RF / microwave heating chamber QM1 has a built-in RF / microwave transmitting element, provides an effect of electromagnetic shielding, and has a heating hole for receiving the aerosol generating article 10.
[0084] In some embodiments, the heating hole may have an aperture and a depth that are adapted to the aerosol generating substrate segment 101. When the aerosol generating article 10 is heated, the aerosol generating substrate segment 101 of the aerosol generating article 10 can be inserted into the heating hole and heated.
[0085] In some embodiments, other segments of the aerosol generating article 10 than the aerosol generating substrate segment 101 are disposed outside the heating hole, such that materials of the other segments are avoided from being heated to produce undesired harmful substances or undesirable odors that affect user's health and sense of experience.
[0086] In some embodiments, the aerosol generating article 10 may further include an electromagnetic protection element 108 and a filter segment 103, and the electromagnetic protection element 108 is provided between the aerosol generating substrate segment 101 and the filter segment 103. When the aerosol generating substrate segment 101 is inserted into the RF / microwave heating device QM for heating, the electromagnetic protection element 108 can effectively block RF / microwave leakage and protect a user from harm of electromagnetic radiation.
[0087] In some embodiments, the aerosol generating article 10 further includes a fixed part 102 that limits filling space of the aerosol generating capsule 104, and the electromagnetic protection element 108 is provided at an end of the fixed part 102.
[0088] In a specific embodiment, the electromagnetic protection element 108 is provided at an end, adjacent to the aerosol generating substrate segment 101, of the fixed part 102, which can confine the RF / microwave to a smaller space and more effectively avoid RF / microwave leakage.
[0089] In some embodiments, by the fixed part 102, a length of the aerosol generating substrate segment 101 is so provided that, when the aerosol generating substrate segment 101 is inserted into the heating hole for heating, the electromagnetic protection element 108 is flush with an edge of the RF / microwave heating chamber QM1 or flush within an error range. This is because on the one hand, the aerosol generating substrate segment 101 should not be too long, otherwise the electromagnetic protection element 108 and the RF / microwave heating cavity QM1 cannot fully cover the aerosol generating substrate segment, which is easy to cause RF / microwave leakage. On the other hand, the aerosol generating substrate segment 101 should not be too short, otherwise RF / microwave utilization would be too low.
[0090] In some embodiments, the electromagnetic protection element 108 may be, for example, a metal mesh. Thus, aerosol generated by the aerosol generating substrate segment 101 can pass through voids of the metal mesh and flow downstream to the downstream filter segment 103.
[0091] In view of the above, the electromagnetic protection element 108 can provide shielding and protection against electromagnetic waves. Specifically, in the RF / microwave heating device QM, the RF / microwave heating chamber QM1 can generate high-intensity electromagnetic waves, which, if not controlled, may leak to the outside of the device and cause potential harm to the surrounding environment or human body. Provision of the electromagnetic protection element 108 can prevent an occurrence of electromagnetic wave leakage and ensure safe progress of the RF / microwave heating process.
[0092] In some embodiments, a seal 105 may be provided on a side, deviating from the filter segment 103, of the aerosol generating substrate segment 101, to avoid leakage of the aerosol generating material.
[0093] Further, the seal 105 may have a mesh structure for a gas flow to pass through and avoid affecting draw resistance.
[0094] Using identical aerosol generating articles, a comparative analysis of first puff aerosol volume under RF / microwave heating versus air heating was conducted. Results are shown in the table below.
[0095] As evidenced by the above data, when the heating temperature is the same, compared with air heating, RF / microwave heating increases the heating release rate of aerosol, so that the heating time is significantly shortened when the first puff concentration is basically the same.
[0096] It should be understood that the term "and / or" used herein is only an association that describes associated objects, and indicates that there can be three types of relationships. For example, A and / or B can be denoted as: A alone, A and B at the same time, and B alone. In addition, the character " / " used herein indicates that related objects before and after is an "or" relationship. As used herein, unless expressly stated otherwise, the term "or" covers all possible combinations, except where infeasible. For example, if it is stated that a part may include A or B, then, unless expressly stated otherwise or infeasible, the part may include A, or B, or A and B. As a second example, if it is stated that a part may include A, B or C, then, unless expressly stated otherwise or infeasible, the part may include A, or B, or C, or A and B, or A and C, or B and C, or A and B and C. The "plurality" in the embodiments of the present disclosure refers to two or more.
[0097] Relational terms used in the embodiments of the present disclosure, such as, first, second, etc., are used only to distinguish an entity or operation from another entity or operation, without requiring or implying any actual relationship or sequence between those entities or operations. In addition, the words "including" , "having" and "containing" and other similar forms are intended to be equivalent in meaning and be open-ended, and item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or to be limited to only the listed item or items. In the drawings and specification, exemplary embodiments have been disclosed. However, many changes and modifications can be made to these embodiments. Therefore, although specific terms are employed, they are used only in a generic and descriptive sense and not for a purpose of limitation.
[0098] Although the present disclosure is disclosed as above, the present disclosure is not limited hereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure. Therefore, the scope of protection of the present disclosure shall be subject to the scope limited by the claims.
Claims
1.An aerosol generating system, characterized by comprising an aerosol generating article and a RF / microwave heating device for heating the aerosol generating article, the aerosol generating article includes an aerosol generating substrate segment including an aerosol generating capsule, the aerosol generating substrate segment of the aerosol generating article is inserted into the RF / microwave heating device, and the RF / microwave heating device generates a RF / microwave acting on the aerosol generating capsule to heat the aerosol generating capsule.2.The aerosol generating system according to claim 1, characterized in that the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the core material is a colloid, a paste or a solid-liquid mixture.3.The aerosol generating system according to claim 1, characterized in that the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the core material comprises at least one of propylene glycol and glycerol.4.The aerosol generating system according to claim 1, characterized in that the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the shell has a thickness of 50 μm to 150 μm.5.The aerosol generating system according to claim 1, characterized in that the aerosol generating capsule has a particle size of 1 mm to 3 mm, and preferably 1.5 mm to 2.5 mm.6.The aerosol generating system according to claim 1, characterized in that the aerosol generating capsule has a filling amount of 0.05 g to 0.5 g, and preferably 0.1 g to 0.3 g.7.The aerosol generating system according to claim 1, characterized in that the aerosol generating capsule has a filling amount of 5 capsules to 100 capsules, and preferably 15 capsules to 30 capsules.8.The aerosol generating system according to claim 1, characterized in that the aerosol generating substrate segment does not comprise other aerosol generating materials than the aerosol generating capsule.9.The aerosol generating system according to claim 1, characterized in that the RF / microwave heating device transmits a RF / microwave frequency capable of making a propylene glycol or glycerol molecule vibrate.10.The aerosol generating system according to claim 1, characterized in that the RF / microwave heating device transmits one or more RF / microwave frequencies selected from a group consisting of 433MHz, 868MHz, 902MHz ~ 928MHz, 2400MHz ~ 2484.5MHz and 5725MHz ~ 5850MHz.11.The aerosol generating system according to claim 1, characterized in that the RF / microwave heating device transmits a RF / microwave with a power of 1W~20W.12.The aerosol generating system according to claim 1, characterized in that the aerosol generating article further comprises an electromagnetic protection element provided downstream of the aerosol generating substrate segment.13.The aerosol generating system according to claim 12, characterized in that the aerosol generating article further comprises a fixed part that limits filling space of the aerosol generating capsule, and the electromagnetic protection element is provided at an end of the fixed part.14.The aerosol generating system according to claim 13, characterized in that the electromagnetic protection element is provided at an end, adjacent to the aerosol generating substrate segment, of the fixed part.15.The aerosol generating system according to claim 12, characterized in that the electromagnetic protection element is a metal mesh.16.An aerosol generating article, characterized by comprising an aerosol generating substrate segment and an electromagnetic protection element provided downstream of the aerosol generating substrate segment.17.The aerosol generating article according to claim 16, characterized in that the aerosol generating article further comprises a filter segment, and the electromagnetic protection element is provided between the aerosol generating substrate segment and the filter segment.18.The aerosol generating article according to claim 16, characterized in that the aerosol generating article further comprises a fixed part that limits filling space of the aerosol generating substrate segment, and the electromagnetic protection element is provided at an end of the fixed part.19.The aerosol generating article according to claim 18, characterized in that the electromagnetic protection element is provided at an end, adjacent to the aerosol generating substrate segment, of the fixed part.20.The aerosol generating article according to claim 16, characterized in that the electromagnetic protection element is a metal mesh.21.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the core material is a liquid.22.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the core material is a colloid, a paste or a solid-liquid mixture.23.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the core material comprises at least one of propylene glycol and glycerol.24.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, the aerosol generating capsule comprises a core material and a shell encapsulating the core material, and the shell has a thickness of 50 μm to 150 μm.25.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, and the aerosol generating capsule has a particle size of 1mm to 3mm, and preferably 1.5 mm to 2.5 mm.26.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, and the aerosol generating capsule has a filling amount of 0.05 g to 0.5 g, and preferably 0.1 g to 0.3 g.27.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule, and the aerosol generating capsule has a filling amount of 5 capsules to 100 capsules, and preferably 15 capsules to 30 capsules.28.The aerosol generating article according to claim 16, characterized in that the aerosol generating substrate segment comprises an aerosol generating capsule and does not comprise other aerosol generating materials.