EP3995020B1 - Utilisation d'un matériau poreux organique dans un dispositif de génération d'aérosol et atomiseur utilisant un matériau poreux organique - Google Patents

Utilisation d'un matériau poreux organique dans un dispositif de génération d'aérosol et atomiseur utilisant un matériau poreux organique Download PDF

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Publication number
EP3995020B1
EP3995020B1 EP20834850.8A EP20834850A EP3995020B1 EP 3995020 B1 EP3995020 B1 EP 3995020B1 EP 20834850 A EP20834850 A EP 20834850A EP 3995020 B1 EP3995020 B1 EP 3995020B1
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EP
European Patent Office
Prior art keywords
porous material
liquid
atomizing
organic porous
atomizing core
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EP20834850.8A
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German (de)
English (en)
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EP3995020A1 (fr
EP3995020A4 (fr
Inventor
Yunshu XU
Zhongli XU
Yonghai LI
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Shenzhen FirstUnion Technology Co Ltd
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Shenzhen FirstUnion Technology Co Ltd
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/44—Wicks
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means

Definitions

  • the present disclosure relates to the field of aerosol generating devices, and in particular to a use of an organic porous material in an aerosol generating device and an atomizer using the organic porous material.
  • a device that changes an atomized liquid containing nicotine and the like into an aerosol by means of the heating and atomizing of an atomizing core is an electronic cigarette simulating a cigarette; the generated aerosol has similar smoke, flavor and feeling to the traditional cigarette.
  • the aerosol containing nicotine generated by atomization does not contain harmful carcinogens such as tar that commonly exist in the smoke of traditional cigarettes and is considered as a cigarette substitute beneficial to the health of traditional smokers.
  • the electronic cigarette has advantages of good portability, generation of no open flame, generation of no secondhand smoke and environment friendliness, and is preferred by many smokers.
  • the cotton or fiber bundle as a liquid guide body, has features of simple structure, good effect and so on, and is highly appreciated by users when used in open-ended big-aerosol atomizing cores.
  • the cotton is fluffy and has a high liquid absorption; however, the heat resistance is low, the ignition point is 150°C only, and the compression modulus is low, which easily leads to large permanent deformation.
  • Fiber bundles made of glass or special polymers and other materials or glass wools have good heat resistance; however, the density is low, the liquid absorption at saturation is low and the liquid locking capability is unsatisfactory.
  • the porous ceramic formed by sintering ingredients such as aggregate, adhesive and pore-forming additive has a large number of pore canals that communicate with one another and communicate with the surface, and has excellent performances such as stable chemical properties, low heat conductivity, high temperature resistance and corrosion resistance, which to some extent compensate for the performance defects of the liquid guide bodies made of cotton and fiber bundle.
  • the porous ceramic type liquid guide bodies employed in the industry generally have problems of low porosity and large diameters of micropores; although the liquid absorption and guide performances can basically meet the design requirements, the liquid locking capability needs improving, that is, it is easy to leak liquid.
  • US 2017/127725 A1 relates to a vaporizer assembly and devices incorporating the vaporizer assembly.
  • US 2018/116281 A1 relates to fluid supply for vapor generating device.
  • the present disclosure provides the following solution creatively.
  • the invention provides an atomizer of an aerosol generating device according to independent claim 1. Further improvement is recited in the dependent claim(s).
  • the present disclosure discloses an application of an organic porous material in an aerosol generating device, wherein the organic porous material is, at least in part, a melamine resin porous material.
  • the organic porous material has an apparent density of (3 ⁇ 120) ⁇ 10 -3 g/cm 3 , preferably (4 ⁇ 12) ⁇ 10 -3 g/cm 3 .
  • the organic porous material has a 25% deformation compression strength of 5 ⁇ 30KPa.
  • the organic porous material has a decomposition temperature exceeding 300°C, preferably a decomposition temperature exceeding 350°C, more preferably a decomposition temperature exceeding 400°C.
  • the organic porous material has a porosity higher than 60%, preferably higher than 80%, more preferably higher than 95%.
  • the organic porous material has a pore size distribution that over 90% volume is occupied by the pores with the pore size ranging between 10nano-100micron, more preferably between 10nano-100nano, and most preferably between 10nano-50nano.
  • the aerosol generating device includes a heating element, and the organic porous material is used as a liquid guide body and is in contact with or adjacent to the heating element.
  • the aerosol generating device includes a heating element, the organic porous material is used as a liquid guide body, and another porous material is contained between the organic porous material and the heating element.
  • the atomizer of an aerosol generating device includes:
  • the atomizing core includes porous ceramic and a melamine resin porous material; one surface of the porous ceramic forms the atomizing surface, and one surface of the melamine resin porous material forms the liquid absorption surface; and the melamine resin porous material covers, at least in part, the porous ceramic, such that the atomizing liquid enters the atomizing core through the liquid absorption surface and is transmitted to the atomizing surface.
  • the organic porous material is, at least in part, a melamine resin porous material.
  • the melamine resin porous material is, for example, a melamine sponge.
  • the embodiment of the present disclosure preferably may use the melamine resin porous material as a liquid guide material of the aerosol generating device as a whole, or combine the melamine resin porous material with other porous materials to form a liquid guide body, for example, combining the melamine resin porous material with nonwoven cloth, cotton and other materials having capillarity to form a liquid guide material, wherein the combining may be bonding, or stacking and so on.
  • the melamine sponge is a material having a three-dimensional porous structure, which has a porosity over 99%, an open-porosity over 95%, and meanwhile has good flame retardance, that is, it will not burn after contacting the open flame and it can self-extinguish when leaving the fire.
  • the melamine resin decomposes slowly at a temperature higher than 420°C and the thermal decomposition products are not harmful to human bodies.
  • the melamine sponge possesses excellent chemical stability, safety and environmental friendliness due to the stable chemical and crosslinking structure.
  • the organic porous material provided in the embodiment of the present disclosure has advantages of high liquid absorption at saturation, good shape after saturation absorption of liquid and high-temperature resistance, which is conducive to transmitting the e-liquid to the heating body.
  • the organic porous material provided in the embodiment of the present disclosure has a high porosity and can smoothly transmit the e-liquid.
  • the discovered material has good e-liquid affinity, which endows the organic porous material provided in the embodiment of the present disclosure with a good e-liquid locking capability.
  • 1 represents a heating body
  • 2 represents an organic material porous body
  • 3 represents a sealing element
  • 4 represents an e-liquid
  • 5 represents an air inlet
  • 6 represents an aerosol outlet
  • 7 represents a flowing direction of an e-liquid
  • 8 represents an aerosol escape pipe
  • 9 represents an atomizer shell
  • 10 represents a positive electrode of a power supply
  • 11 represents a negative electrode of a power supply
  • 12 represents a sealing cover
  • 13 represents a ceramic porous body inbuilt with a heating wire.
  • FIG. 1(a) is a microstructure SEM photo of a melamine resin porous material according to one embodiment of the present disclosure
  • FIG. 1(b) is a diagram of a pore size distribution of a melamine resin porous material according to one embodiment of the present disclosure.
  • the melamine resin porous material is a flexible nano ultrafine fiber foam plastic, with narrow pore size; in addition, the melamine resin sponge has a high temperature resistance, which is suitable for working a long time in working conditions of 200-240°C, without volatilization and deformation under 400°C.
  • the liquid guiding and locking capability of the melamine resin sponge for an e-liquid has no obvious relationship with the pore size of the melamine resin sponge, and good liquid guiding and locking effects can be achieved when the average pore size lowers to 20nano to 100micron.
  • FIG. 2 is a sectional structure view of an embodiment of an aerosol generating device employing an organic porous material.
  • a spiral heating body 1 formed by coiling a heating wire or heating tape is wound on a cylindrical surface of the organic material porous body 2.
  • the organic material porous body 2 has an appearance presenting a dumbbell structure, which is thin in the middle and thick at two ends.
  • An aerosol escape pipe 8 has an appearance presenting a circular tube, of which a bottom defines horizontal circular symmetrical through holes, the organic material porous body 2 wound by the heating body 1 is installed in the circular symmetrical holes horizontally, and the dumbbell structure thick at two ends, after absorbing the e-liquid 4 in the liquid storage chamber, can also function as sealing to prevent the e-liquid leaking.
  • An atomizer shell 9 of the aerosol generating device has an open-ended structure at the bottom, such that an e-liquid can be filled; after the aerosol escape pipe 8, the heating body 1, the porous body 2 and the e-liquid 4 are assembled, a sealing element made of silicone rubber is employed to seal the bottom of the shell 9 of the aerosol generating device.
  • the e-liquid 4 enters the liquid storage part inside the porous body through the liquid absorption surface of the porous body 2, to reach the atomizing surface.
  • the flow direction of the e-liquid is indicated by 7.
  • a controller When an action of suction occurs, a controller is triggered to supply power through electrodes 10 and 11, and the heating body transfers the heat to the e-liquid on the atomizing surface of the porous body.
  • the e-liquid on the atomizing surface receives the heat transferred by the heating body 1 and is converted into a gas, which then interacts with the air entering from the air inlet 5 to generate an aerosol that escapes from the aerosol outlet 6.
  • the present embodiment is an aerosol generating device of simple structure, which makes full advantages of the micro three-dimensional nanonet structure of an organic porous material, achieves fast liquid absorption, effectively improves the liquid storage capacity, and enhances the smooth transmission capability of the e-liquid inside the porous body.
  • a nano-capillary microstructure is formed after liquid infiltration, which has an outstanding liquid locking capability, and can effectively solve the problem of easy leaking of liquid.
  • the aerosol generated by the atomizing surface of the porous body escapes immediately through the escape pipe along the suction direction, without retention or problems of flavor degradation caused by repeated heating, which also greatly reduces the probability of occurrence of pyrolysis byproducts.
  • FIG. 3 and FIG. 4 are a sectional structure view of another embodiment of an aerosol generation device employing the organic porous material and an actual photo of an atomizer core.
  • the organic material porous body 2 is covered on a surface of a ceramic porous body 13 inside which a heating wire 1 is sintered, to compensate for the insufficient liquid locking capability of the porous ceramic.
  • porous ceramic type liquid guide bodies are employed in the industry.
  • the ceramic porous bodies have excellent performances such as stable chemical properties, low thermal conductivity, high-temperature resistance and corrosion resistance, which to some extent compensate for the performance defects of liquid guide bodies made of cotton and fiber bundles.
  • the ceramic porous bodies generally have problems such as low porosity and large diameters of micropores; the porosity ranges between 40%-80%, the pore size ranges between 10 ⁇ m ⁇ 300 ⁇ m, the liquid absorbing and guiding performance basically can meet the design requirements, however, the liquid locking capability needs improving, that is, it is easy to leak liquid.
  • FIG. 4 is an actual photo of an embodiment of an organic porous material wrapped on a surface of a porous ceramic heating body in which a heating wire is sintered. From the figure it is obvious that the liquid locking capability of the organic porous material is better than the porous ceramic, there is droplet leaked onto the lead of the heating wire in the ceramic part, while the surface of the organic porous material part is wet but without liquid leaked.
  • FIG. 5 is a structure diagram of an embodiment of an open-ended liquid-dripping big-aerosol atomizing core employing an organic porous material.
  • the organic porous material is directly used as a liquid storage carrier and a liquid guide body, and is applied to an open-ended liquid-dripping big-aerosol atomizing core, to directly replace the cotton type liquid storage carriers and liquid guide bodies that are employed in the industry.
  • the cotton has an ignition point of 150°C only, which is easy to be burned by the heating wire.
  • the melamine resin porous material taking a heat resistant polymer as a base material has a decomposition temperature exceeding 400°C. It can be used for a long time at 200-240°C, which just covers the operating temperature range of the electronic cigarette atomizer.
  • the melamine resin decomposes slowly at a temperature higher than 420°C and the thermal decomposition products are not harmful to human bodies.
  • the organic porous material provided by the present disclosure has advantages of high liquid absorption at saturation, good shape after saturation absorption of liquid and high-temperature resistance, which is conducive to transmitting the e-liquid to the heating body.
  • FIG. 6 is a contrast of appearances of an atomizing core (a) made of absorbent cotton and an atomizing core (b) made of a melamine resin porous material after saturation absorption of e-liquid. After kept still for 10 minutes, the e-liquid absorbed into the atomizing core (a) made of absorbent cotton mostly overflows, while the atomizing core (b) made of a melamine resin porous material still keeps the original appearance of saturation absorption, with little e-liquid overflown.
  • FIG. 7 is a contrast of liquid storage and burning resistance between an atomizing core (a) made of absorbent cotton and an atomizing core (b) made of a melamine resin porous material, which shows the appearances of the atomizing core (a) made of absorbent cotton and the atomizing core (b) made of a melamine resin porous material when heated for 8 seconds after saturation absorption of e-liquid, wherein the heating condition is a heating wire of 1.2ohm and a voltage of 3.7volt.
  • the melamine resin porous body is conducive to smoothly supplying liquid and preventing dry burning.

Claims (7)

  1. Un atomiseur d'un dispositif de génération d'aérosol, caractérisé par le fait qu'il comprend :
    une coque (9), à l'intérieur de laquelle est formée une chambre de stockage de liquide configurée pour stocker un liquide atomisé, dans laquelle la chambre de stockage de liquide comprend une sortie, un canal d'aérosol s'étendant le long de la direction longitudinale de la coque (9) est formé à l'intérieur de la coque (9), le canal d'aérosol comprend une entrée (5) et une sortie d'air (6), et la sortie d'air (6) est située à l'une des extrémités de la coque (9) ;
    un noyau d'atomisation, logé dans la coque (9), dans lequel la sortie de la chambre de stockage de liquide est en communication avec une surface d'absorption de liquide du noyau d'atomisation, une surface d'atomisation du noyau d'atomisation est en communication avec le canal d'aérosol, et le noyau d'atomisation comprend un matériau poreux organique qui est, au moins en partie, constitué d'un matériau poreux à base de résine de mélamine ;
    un élément de fixation, configuré pour fixer le noyau d'atomisation et la coque (9) ;
    un corps de chauffe (1), qui est en contact ou adjacent à la surface d'atomisation ; et
    une électrode (10, 11), configurée pour se connecter au corps de chauffe (1) et permettre au corps de chauffe (1) de recevoir une énergie électrique.
  2. L'atomiseur selon la revendication 1, dans lequel le noyau d'atomisation comprend en outre une céramique poreuse ;
    une surface de la céramique poreuse forme la surface d'atomisation, et une surface du matériau poreux en résine de mélamine forme la surface d'absorption du liquide ; et
    le matériau poreux en résine de mélamine recouvre, au moins en partie, la céramique poreuse, de sorte que le liquide d'atomisation pénètre dans le noyau d'atomisation par la surface d'absorption du liquide et est transmis à la surface d'atomisation.
  3. L'atomiseur selon la revendication 1, dans lequel le matériau poreux organique a une densité apparente de (3-120)×10-3 g/cm3, de préférence (4-12)×10-3 g/cm3.
  4. L'atomiseur selon la revendication 1, dans lequel le matériau poreux organique a une résistance à la compression par déformation de 25 % comprise entre 5 et 30KPa.
  5. L'atomiseur selon la revendication 1, dans lequel le matériau poreux organique a une température de décomposition supérieure à 300°C, de préférence une température de décomposition supérieure à 350°C, plus préférentiellement une température de décomposition supérieure à 400°C.
  6. L'atomiseur selon la revendication 1, dans lequel le matériau poreux organique a une porosité supérieure à 60 %, de préférence supérieure à 80 %, plus préférentiellement supérieure à 95 %.
  7. L'atomiseur selon la revendication 1, dans lequel le matériau poreux organique présente une distribution de la taille des pores dont plus de 90 % du volume est occupé par les pores, la taille des pores étant comprise entre 10nano et 100microns, de préférence entre 10nano et 1micron, de préférence entre 10nano et 100nano, et de préférence encore entre 10nano et 50nano.
EP20834850.8A 2019-07-03 2020-07-03 Utilisation d'un matériau poreux organique dans un dispositif de génération d'aérosol et atomiseur utilisant un matériau poreux organique Active EP3995020B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910593233.XA CN112167725B (zh) 2019-07-03 2019-07-03 一种有机多孔材料在气溶胶发生装置中的用途及使用该材料的雾化器
PCT/CN2020/100226 WO2021000952A1 (fr) 2019-07-03 2020-07-03 Utilisation d'un matériau poreux organique dans un dispositif de génération d'aérosol et atomiseur utilisant un matériau poreux organique

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EP3995020A1 EP3995020A1 (fr) 2022-05-11
EP3995020A4 EP3995020A4 (fr) 2022-09-07
EP3995020B1 true EP3995020B1 (fr) 2024-04-10

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US (1) US20220240580A1 (fr)
EP (1) EP3995020B1 (fr)
CN (1) CN112167725B (fr)
WO (1) WO2021000952A1 (fr)

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CN114847532A (zh) * 2022-03-31 2022-08-05 海南摩尔兄弟科技有限公司 电子雾化装置及其雾化芯
CN117617556A (zh) * 2022-08-18 2024-03-01 深圳市合元科技有限公司 雾化器、电子雾化装置、雾化组件及制备方法

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US20220240580A1 (en) 2022-08-04
EP3995020A1 (fr) 2022-05-11
CN112167725B (zh) 2023-03-14
CN112167725A (zh) 2021-01-05
EP3995020A4 (fr) 2022-09-07
WO2021000952A1 (fr) 2021-01-07

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