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WO2023004996A1 - Ensemble d'atomisation de cigarette électronique, procédé de préparation de noyau d'atomisation et cigarette électronique - Google Patents

Ensemble d'atomisation de cigarette électronique, procédé de préparation de noyau d'atomisation et cigarette électronique Download PDF

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Publication number
WO2023004996A1
WO2023004996A1 PCT/CN2021/122898 CN2021122898W WO2023004996A1 WO 2023004996 A1 WO2023004996 A1 WO 2023004996A1 CN 2021122898 W CN2021122898 W CN 2021122898W WO 2023004996 A1 WO2023004996 A1 WO 2023004996A1
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WIPO (PCT)
Prior art keywords
liquid
barrier layer
porous body
atomization
atomizing
Prior art date
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Ceased
Application number
PCT/CN2021/122898
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English (en)
Chinese (zh)
Inventor
唐建国
金奇斌
周虎
卢音波
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BYD Precision Manufacturing Co Ltd
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BYD Precision Manufacturing Co Ltd
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Filing date
Publication date
Application filed by BYD Precision Manufacturing Co Ltd filed Critical BYD Precision Manufacturing Co Ltd
Publication of WO2023004996A1 publication Critical patent/WO2023004996A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • 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
    • A24F40/48—Fluid transfer means, e.g. pumps

Definitions

  • the present application relates to the technical field of electronic cigarettes, and more specifically, relates to an atomizing component of an electronic cigarette, a method for preparing an atomizing core, and an electronic cigarette.
  • Electronic cigarettes generally include power components and atomizers. After the power supply component supplies power to the atomizer, the atomizer heats and atomizes the smoke liquid in the electronic cigarette, and the smoke liquid is transformed into mist and then inhaled by the user.
  • the power supply component supplies power to the atomizer
  • the atomizer heats and atomizes the smoke liquid in the electronic cigarette, and the smoke liquid is transformed into mist and then inhaled by the user.
  • users have a feeling similar to "puffing clouds" when smoking.
  • e-cigarettes have been favored by consumers for their convenience in smoking and low harm to the body.
  • the atomizer core usually adopts porous material to absorb e-liquid.
  • Porous materials have the properties of absorbing and conducting liquids. But this design may also cause smoke oil leakage. After the e-liquid is soaked in the porous material, it may accumulate on the surface and edges of the porous material, and then the liquid droplets will drop in the case of the electronic cigarette under the condition of vibration and airflow, and even drop on the airflow channel. This phenomenon will cause the e-liquid to leak from the gap of the electronic cigarette shell, the air inlet and other positions, which will seriously affect the user experience.
  • the microporous structure of the porous body is difficult to control during the processing process, and it is prone to situations where the micropore size does not meet the actual application requirements, which in turn causes the flow of e-liquid to be too fast or too slow. This phenomenon will affect the taste of atomized smoke.
  • One purpose of the present application is to provide a new technical solution for an electronic atomization component.
  • Another object of the present application is to provide a method for preparing an atomizing core of an electronic cigarette atomizing component.
  • Another object of the present application is to provide an electronic cigarette.
  • an electronic cigarette assembly including: a housing, the housing has a liquid storage chamber and an atomization chamber, and an air outlet channel communicating with the outside atmosphere is provided on the housing, The atomization chamber communicates with the air outlet channel; the atomization core, the atomization core is arranged in the housing, the atomization core includes a porous body and a heating element, the porous body has a liquid absorption surface, a mist The liquid-absorbing surface and the outer peripheral surface connecting the liquid-absorbing surface and the atomizing surface, the liquid-absorbing surface communicates with the liquid storage chamber, the atomizing surface communicates with the atomizing chamber, and the heating element is arranged on the The atomization surface; at least part of the outer surface of the porous body is provided with a barrier layer, the barrier material in the barrier layer fills at least part of the micropores on the outer surface of the porous body, and the thickness of the barrier layer is less than 0.1mm , and the thickness of the barrier layer is
  • the barrier layer has a thickness ranging from 0.05 ⁇ m to 90 ⁇ m.
  • the barrier layer has a thickness ranging from 0.3 ⁇ m to 50 ⁇ m.
  • the barrier layer has a thickness ranging from 0.4 ⁇ m to 30 ⁇ m.
  • the barrier layer has a thickness ranging from 0.1 ⁇ m to 1 ⁇ m.
  • the barrier layer is provided on at least a part of the peripheral surface of the porous body, and the barrier layer is provided on the peripheral surface of the porous body as a barrier region.
  • the barrier layer covers the entire outer peripheral surface.
  • the outer peripheral surface includes an upper side, a lower side and a stepped surface, the edge of the upper side is in contact with the liquid absorption surface, and the edge of the lower side is in contact with the atomization surface , the upper side and the lower side form the stepped surface, the stepped surface is opposite to the liquid-absorbing surface; the barrier layer is provided on the stepped surface.
  • the barrier layer is provided on the edge of the liquid-absorbing surface, and the region where the barrier layer is provided on the edge of the liquid-absorbing surface is a barrier region.
  • the barrier layer is provided on the edge of the atomization surface, and the area on the edge of the atomization surface provided with the barrier layer is a barrier region.
  • the barrier layer is provided on the area surrounding the heating element on the atomizing surface, and the area on the atomizing surface surrounding the heating element is a barrier area.
  • the porous body is provided with a ventilation channel, one end of the ventilation channel communicates with the liquid storage chamber, the other end of the ventilation channel communicates with the atomization chamber, and the ventilation channel communicates with the liquid storage chamber.
  • the air channel allows outside air to enter the liquid storage chamber and prevents the liquid in the liquid storage chamber from flowing out; the inner wall of the air exchange channel is provided with the barrier layer.
  • the ventilation channel is a through hole penetrating through the porous body along the extending direction from the liquid absorbing surface to the atomizing surface.
  • the ventilation channel is a groove provided on the outer peripheral surface, and the groove penetrates through the porous body along an extending direction from the atomizing surface to the liquid absorbing surface.
  • the number of the ventilation channels is one or more, and a plurality of the ventilation channels are arranged at intervals on the outer peripheral surface of the porous body.
  • the average pore diameter of the micropores in the barrier area is 2 ⁇ m-60 ⁇ m.
  • the average pore diameter of the micropores in the barrier area is 2 ⁇ m-30 ⁇ m.
  • the average pore diameter of the micropores in the barrier area is 3 ⁇ m-20 ⁇ m.
  • the number of micropores per unit area of the barrier region is 20-300/mm 2 .
  • the number of micropores per unit area of the barrier region is 20-100/mm 2 .
  • the number of micropores per unit area of the barrier region is 30-60/mm 2 .
  • the porosity of the porous body ranges from 40% to 60%; or, the porosity of the porous body is greater than 60%.
  • the barrier layer is provided on the liquid-absorbing surface as a whole, and after the barrier layer is provided on the liquid-absorbing surface, the porosity of the liquid-absorbing surface is less than or equal to 55%.
  • the average pore diameter of the micropores on the liquid-absorbing surface ranges from 40 ⁇ m to 60 ⁇ m.
  • the barrier layer is provided on the atomization surface as a whole, and after the barrier layer is provided on the atomization surface, the porosity of the atomization surface is less than or equal to 55%.
  • the average pore diameter of the micropores on the atomization surface ranges from 40 ⁇ m to 60 ⁇ m.
  • the barrier layer is a vapor deposition layer, a coating layer or a printing layer.
  • the barrier layer is a physical vapor deposition layer.
  • the barrier layer is a silicon dioxide layer, an aluminum oxide layer, a silicon layer or an aluminum layer.
  • the barrier material in the barrier layer is one or more of alumina, silicon dioxide, aluminum, silicon, borosilicate or nanosilicate.
  • the barrier material in the barrier layer is one of silicon dioxide, aluminum oxide, silicon or aluminum.
  • the electronic atomization assembly further includes an atomization core seal, the atomization core seal is sleeved on the porous body, and the atomization core seal covers at least the Part of the outer peripheral surface of the porous body and the edge of the liquid-absorbing surface.
  • the electronic vaping assembly further includes: an upper cover and an upper cover seal, the upper cover seal is sleeved on the outer periphery of the upper cover, and the outer surface of the upper cover seal is The surface is in an interference fit with the inner wall of the housing, and the upper cover has a mounting position and a liquid passage connected to the installation position, and the liquid passage communicates with the liquid storage chamber; the atomizing core is fixedly arranged At the installation position, the liquid-absorbing surface communicates with the liquid-through cavity.
  • the electronic aerosolization assembly further includes a lower cover, the lower cover is arranged at the end of the housing away from the air outlet channel, the lower cover and the atomization of the porous body
  • the area between the surfaces constitutes the atomization chamber, and the lower cover supports the atomization core
  • the lower cover is provided with an air inlet passage, and the air inlet passage communicates with the atomization chamber
  • a conductive element is arranged on the lower cover, and the heating element is electrically connected to the conductive element.
  • a method for preparing the atomization core of the above-mentioned electronic cigarette atomization component including the following steps: preparing a porous body, the porous body has a liquid absorption surface, an atomization surface and an outer peripheral surface; At least a part of the surface of the porous body is surface treated, and a barrier layer is formed on the outer surface of the porous body, and the barrier material in the barrier layer fills at least part of the micropores on the outer surface of the porous body; atomization in the porous body A heating element is arranged on the surface.
  • the surface treatment process includes vapor deposition, coating or printing.
  • the surface treatment process includes sputtering or vacuum evaporation.
  • an electronic cigarette including: the electronic cigarette assembly described in any one of the above-mentioned embodiments; a cigarette rod device, an electrical component is arranged in the cigarette rod device, and the electrical component An electrical connection is formed with the heating element, the electrical component is configured to supply power to the heating element, an air inlet is formed on the smoke rod device, and the air inlet communicates with the atomization chamber; the smoke The rod device is detachably connected to the electronic atomization assembly.
  • the barrier material fills the micropores of the porous body, thereby improving the liquid permeability of the porous body.
  • Fig. 1 is a schematic diagram of a cross-sectional explosion of the electronic atomization component provided by the present application
  • Fig. 2 is a schematic cross-sectional view of the assembly of the electronic vaporization component provided by the present application
  • Fig. 3 is a schematic cross-sectional view of the assembly of some parts of the electronic vaporization assembly provided by the present application;
  • Fig. 4 is a side sectional structural schematic diagram of the atomizing core provided by the present application.
  • Fig. 5 is a schematic structural diagram of an atomizing core provided by the present application.
  • Fig. 6 is a schematic structural diagram of an atomizing core provided by the present application.
  • Fig. 7 is a schematic structural diagram of an atomizing core provided by the present application.
  • Fig. 8 is a side sectional structural schematic diagram of an atomizing core provided by the present application.
  • Fig. 9 is a schematic structural diagram of an atomizing core provided by the present application.
  • Fig. 10 is a schematic structural diagram of an atomizing core provided by the present application.
  • Fig. 11 is a side sectional structural schematic diagram of an atomizing core provided by the present application.
  • Fig. 12 is a partially enlarged cross-sectional view of the surface of the porous body provided by the present application.
  • micropore 214
  • Ventilation channel 22
  • the electronic cigarette atomization assembly 100 provided by this solution includes a housing 10 and an atomizing core 20 .
  • the casing 10 has a liquid storage chamber 12 and an atomization chamber 13 .
  • the liquid storage chamber 12 is used for storing e-liquid.
  • the casing 10 is provided with an air outlet channel 11 communicating with the outside world, and the atomization chamber 13 communicates with the air outlet channel 11 .
  • the smoke liquid in the liquid storage chamber 12 is atomized to form smoke and enters the air outlet channel 11 through the atomization chamber 13 to be inhaled by the user.
  • the atomizing core 20 is arranged in the casing 10 .
  • the atomizing core 20 includes a porous body 21 and a heating body 23 .
  • the porous body 21 is used for infiltrating and absorbing e-liquid.
  • the porous body 21 has a liquid absorbing surface 211 , an atomizing surface 212 , and an outer peripheral surface 213 connecting the liquid absorbing surface 211 and the atomizing surface 212 .
  • the liquid absorbing surface 211 communicates with the liquid storage chamber 12 for contacting and absorbing the liquid in the liquid storage chamber 12 .
  • the atomizing surface 212 communicates with the atomizing chamber 13 , and the heating element 23 is disposed on the atomizing surface 212 .
  • the heating element 23 can heat and atomize the smoke liquid in the porous body 21 that is conducted to the atomizing surface 212, and the formed smoke enters the atomizing chamber 13, and enters the air outlet channel 11 through the atomizing chamber 13, so that it can be inhaled by the user .
  • At least one part of the outer surface of the porous body 21 is provided with a barrier layer 24, that is, at least one of the liquid absorption surface 211, the atomization surface 212, and the outer peripheral surface 213 is provided with a barrier layer 24; At least one of the surface 212 and the outer peripheral surface 213 is provided with a barrier layer 24; or, at least one of the liquid absorption surface 211, the atomization surface 212, and the outer peripheral surface 213 is provided with a barrier layer 24; or, A barrier layer 24 is provided on at least a partial area of at least one of the liquid-absorbing surface 211 , the atomizing surface 212 , and the outer peripheral surface 213 .
  • Micropores 214 are distributed on the porous body 21 , and these micropores 214 are distributed on the surface and inside of the porous body 21 , which can absorb and transfer liquid.
  • the porous body 21 is a material piece with holes, such as a ceramic porous body.
  • the barrier layer 24 is a layer structure in which a barrier material is formed on at least part of the outer surface of the porous body 21 by means of vapor deposition, coating, printing and the like.
  • the barrier material may be filled in the micropores 214 on the outer surface of the porous body 21 so as to occupy the spaces of the micropores 214 on the outer surface.
  • the structure of the micropores 214 on the outer surface of the porous body 21 can be changed, thereby adjusting the liquid permeability of the surface of the porous body 21 .
  • the thickness of the barrier layer 24 is generally less than 0.1 mm (millimeter) and greater than or equal to 0.05 ⁇ m (micrometer).
  • the thickness of the barrier layer 24 is small, and by making the fine and dense barrier material be arranged on the surface of the porous body 21 in a thin layer, on the one hand, the liquid permeability of the outer surface of the porous body 21 can be adjusted, and on the other hand, it will not affect the porous body.
  • the liquid absorbing and liquid permeable properties of the whole interior of the porous body 21 are affected, thereby ensuring good liquid absorbing capacity and liquid absorbing speed of the porous body 21 as a whole.
  • the barrier layer 24 with a smaller thickness will not affect the overall structure and shape of the porous body 21, and at the same time, because of its fine and compact characteristics, the smoothness of at least a part of the surface of the porous body 21 is improved, which is conducive to making the porous body 21 is stably and reliably positioned and installed in the vaping component 100, and is not easily shaken or damaged.
  • the barrier layer 24 has a thickness ranging from 0.05 ⁇ m (micrometer) to 90 ⁇ m (micrometer).
  • the barrier layer 24 has a thickness ranging from 0.3 ⁇ m to 50 ⁇ m.
  • the filling material formed by the barrier layer 24 in the above two thickness ranges is relatively thick, which can effectively weaken the liquid absorption and liquid permeability of the micropores 214 on the outer surface of the porous body 21, thereby preventing the appearance of liquid on the surface of the porous body 21 to a certain extent.
  • the phenomenon of drop accumulation reduces the possibility of leakage.
  • the barrier layer 24 in this thickness range can effectively improve the smoothness of the surface of the porous body 21 , thereby improving the assembly stability and sealing reliability of the porous body 21 in the casing 10 .
  • the barrier layer 24 has a thickness ranging from 0.4 ⁇ m to 30 ⁇ m.
  • a barrier layer 24 with a smaller thickness has a thinner filler material.
  • the barrier layer 24 has a more uniform thickness and can be used to adjust the liquid permeability rate of the outer surface of the porous body 21 .
  • the liquid permeation rate can be adjusted from the surface of the porous body 21 by setting a thinner and uniform barrier layer 24, so that the porous body 21
  • the body 21 achieves liquid-permeable and liquid-absorbent properties meeting application requirements.
  • the barrier layer 24 has a thickness ranging from 0.1 ⁇ m to 1 ⁇ m.
  • the thickness of the barrier layer 24 in this thickness range is extremely small, and it can be used in adjusting the liquid permeability and liquid absorption performance of the local area of the porous body 21 .
  • the e-liquid can be tended to gather in the area where the heating element 23 is located, thereby improving the atomization efficiency and atomization amount, and then achieving The purpose of improving the taste of smoke.
  • the thickness of the barrier layer 24 disposed on at least part of the outer surface of the porous body 21 may be uniform or non-uniform.
  • the outer surface of the porous body 21 can be partially or fully covered by using the above-mentioned barrier layer 24 of different thickness, so as to adjust the liquid absorption rate, liquid absorption uniformity, and surface smoothness of the porous body 21. In this way, the overall performance of the porous body 21 can be improved.
  • the above-mentioned thickness of the barrier layer 24 generally refers to the average thickness of the barrier layer 24 in a certain area.
  • the slightly uneven thickness of the barrier layer 24 caused by the micropores 214 and the surface structure of the porous body 21 does not affect the performance of the above technical features.
  • the barrier layer 24 can be formed on at least part of the outer surface of the porous body 21 by means of vapor deposition, coating, printing, etc.; according to one embodiment of the present application, the barrier layer 24 can be formed by physical vapor deposition or Chemical vapor deposition is formed on at least part of the outer surface of the porous body; according to one embodiment of the present application, the barrier layer 24 is formed on at least part of the outer surface of the porous body by sputtering, vacuum evaporation, or electroplating; according to this In one embodiment of the application, the barrier layer is formed on at least part of the outer surface of the porous body by means of sputtering or vacuum evaporation.
  • the barrier layer 24 When the barrier layer 24 is provided on the outer peripheral surface 213 , the barrier material may be filled in the pores 214 on the outer peripheral surface 213 of the porous body 21 .
  • Providing the barrier layer 24 on the outer peripheral surface 213 can reduce the liquid permeability of the outer peripheral surface 213 of the porous body 21 .
  • the edge of the porous body 21 often needs to cooperate with other components to realize sealing and prevent liquid from penetrating.
  • the micropores 214 on the outer peripheral surface 213 instead cause a hidden danger of liquid leakage.
  • the provision of the barrier layer 24 can effectively reduce the liquid penetration of the outer peripheral surface 213 and improve the sealing performance.
  • a barrier layer 24 may be provided on a part of the outer peripheral surface 213, for example, a barrier layer 24 is provided in the A region of the outer peripheral surface 213. At this time, the barrier region is the A region, and the barrier layer 24 will not be completely covered.
  • the outer peripheral surface 213 , part of the area on the outer peripheral surface 213 may not cover the barrier layer 24 , that is, be exposed. Under other conditions being the same, for example, when the distribution range and size of micropores 214 on the outer peripheral surface 213 are relatively uniform, compared with the unblocked area on the outer peripheral surface 213, the leakage rate of e-liquid corresponding to the blocked area smaller.
  • the barrier layer 24 can be provided on the entire area of the outer peripheral surface 213 , at this time, the barrier area is the entire area of the outer peripheral surface 213 , and the barrier layer 24 can completely cover the outer peripheral surface 213 .
  • the barrier layer 24 covers the entire area of the outer peripheral surface 213 , most of the micropores 214 on the outer peripheral surface 213 can be filled through the structural features of the barrier layer 24 .
  • the seepage rate of the e-liquid is greatly reduced, thereby effectively preventing the e-liquid from forming droplets on the outer peripheral surface 213 of the porous body 21 and causing leakage.
  • the surface flatness of the outer peripheral surface 213 of the porous body 21 can be improved by providing a barrier layer 24 with a relatively large thickness, thereby improving the positioning and installation reliability of the porous body 21 in the housing 10, and improving the performance of the porous body 21. The overall tightness of the weekly test.
  • the barrier material of the barrier layer 24 can fill part or all of the micropores 214 on the outer peripheral surface 213 , so as to achieve the above-mentioned requirement of reducing liquid permeability.
  • the outer peripheral surface 213 includes an upper side 2131 , a lower side 2132 and a stepped surface 2133 .
  • the edge of the upper side 2131 is in contact with the liquid-absorbing surface 211
  • the edge of the lower side 2132 is in contact with the atomizing surface 212
  • the upper side 2131 and the lower side 2132 form a stepped surface 2133
  • the stepped surface 2133 is opposite to the liquid-absorbing surface 211 .
  • a barrier layer 24 may be provided on the stepped surface 2133 .
  • liquid absorbing surface 211 and the atomizing surface 212 are respectively the top surface and the bottom surface of the porous body 21
  • the outer peripheral surface 213 may be the outer surface of the porous body 21 .
  • the outer peripheral surface 213 is mainly composed of an upper side 2131, a lower side 2132 and a stepped surface 2133, wherein the stepped surface 2133 is located between the upper side 2131 and the lower side 2132, and the upper side 2131 is located above the lower side 2132, that is, close to the top surface (suction The orientation of the liquid surface 211).
  • the upper edge of the upper side 2131 is connected to the liquid absorbing surface 211
  • the lower edge of the lower side 2132 is connected to the atomizing surface 212 .
  • the lower edge of the upper side 2131 is connected to the upper edge of the lower side 2132 , and a stepped surface 2133 is formed in the connection area between the upper side 2131 and the lower side 2132 .
  • the stepped surface 2133 can extend toward the center of the porous body 21 , so that the porous body 21 shrinks from top to bottom in the width direction, and the size of the atomizing surface 212 is smaller than that of the liquid-absorbing surface 211 .
  • the provision of the stepped surface 2133 facilitates the installation of the porous body 21 in the housing 10 , can increase the assembly speed of the porous body 21 , plays a positioning role, and improves installation stability.
  • the barrier layer 24 is provided on the stepped surface 2133 , which can further improve the anti-penetration effect of the outer peripheral surface 213 . In practical applications, sometimes the stepped surface 2133 cannot be well sealed, and it cannot form a tight sealing relationship with other components in the housing 10 . By arranging the barrier layer 24 on the stepped surface 2133, it is possible to effectively reduce the situation of the liquid permeating the stepped surface 2133, so as to achieve the effect of preventing liquid leakage.
  • the porous body 21 has a porous structure, and micropores 214 are exposed on the outer peripheral surface 213 , and the atomizing surface 212 and the liquid absorbing surface 211 also have micropores 214 for absorbing liquid.
  • the barrier material of the barrier layer 24 can block at least a part of the micropores 214 on the outer peripheral surface 213 .
  • the barrier material can block most of the micropores 214 on the outer peripheral surface 213 , or block some of the micropores 214 on the outer peripheral surface 213 .
  • the barrier material can not only block the single micropore 214 as a whole, but also fill a part of the space of the micropore 214 .
  • the porosity of the outer surface of the porous body 21 and/or the pore size of the micropores 214 can be reduced by setting the barrier layer 24, thereby reducing or even preventing the e-liquid in the micropores 214 inside the porous body 21 from seeping through the outer peripheral surface 213 into the mist of the electronic cigarette In the chemical chamber 13, and then prevent leakage.
  • the overall flatness of the outer peripheral surface 213 of the porous body 21 can also be improved by providing the barrier layer 24 .
  • This is beneficial to the positioning and installation stability of the porous body 21 in the casing 10 .
  • the shape and surface of the porous body 21 are not regular and flat easily due to the characteristics of the process during processing.
  • the barrier layer 24 on the outer peripheral surface 213 the above-mentioned problems can be alleviated to a certain extent, thereby improving the flatness of the outer surface and facilitating installation and positioning.
  • a barrier layer 24 may be provided at the edge of the liquid-absorbing surface 211 , and a barrier area is formed at the edge of the liquid-absorbing surface 211 .
  • the barrier layer 24 on the liquid-absorbing surface 211 may be in contact with the barrier layer 24 on the outer peripheral surface 213 , and the barrier layer 24 extends from the outer peripheral surface 213 to the edge of the liquid-absorbing surface 211 .
  • the barrier layer 24 By disposing the barrier layer 24 at the edge of the liquid-absorbing surface 211, the liquid permeability at the edge of the liquid-absorbing surface 211 is reduced. On the liquid-absorbing surface 211, the central region closer to the liquid-absorbing surface 211 still retains good liquid-permeable performance. The part of the edge of the liquid absorption surface 211 often needs to be in contact with the atomizing core seal 30 and other components to be sealed. This part of the area does not need to undertake the function of liquid absorption. If the liquid absorption performance is good, it may cause liquid leakage instead.
  • the part located in the central area of the liquid-absorbing surface 211 communicates with the liquid-storage chamber 12, and this part needs to bear the role of absorbing liquid, and its liquid-absorbing efficiency is greater than that of the edge of the liquid-absorbing surface 211, which can fully exert its liquid-absorbing effect.
  • Setting the barrier layer 24 at the edge of the liquid-absorbing surface 211 can not only enhance the liquid-absorbing efficiency of the area communicating with the liquid storage chamber 12, but also prevent liquid leakage caused by the liquid accumulation in the edge area.
  • the barrier layer 24 may also be provided on the edge of the atomization surface 212 , and the area on the edge of the atomization surface 212 provided with the barrier layer 24 is a barrier area.
  • the heating element 23 is arranged on the atomizing surface 212 , and the heating element 23 generates heat after being energized to heat and atomize the liquid smoke transmitted to the atomizing surface 212 .
  • the area near the edge of the atomizing surface 212 is relatively far away from the heating element 23, so it is less heated, and the droplet atomization efficiency at this position is low. Setting a barrier layer 24 at this position area can effectively prevent leakage. Oil.
  • the barrier layer 24 is provided on the edge of the atomizing surface 212, which can reduce the liquid-permeable effect at the edge of the atomizing surface 212, and then make the liquid flow to the area close to the heating element 23, thereby improving the heating element 23.
  • the amount of liquid permeated around can effectively improve the atomization efficiency, so that the liquid can be fully heated and atomized evenly.
  • a barrier layer 24 is provided on the area surrounding the heating element 23 on the liquid absorbing surface 211 , and a barrier area is formed on the atomizing surface 212 .
  • This embodiment further improves the atomization efficiency of the e-liquid.
  • the heating element 23 is a heating circuit formed by screen printing, and the heating element 23 is linearly extended.
  • the barrier layer 24 can be arranged on both sides of the heating element 23 on the atomizing surface 212 in the width direction, at a predetermined distance from the heating element 23 . In this way, the liquid on the porous body 21 gathers around the heating element 23 and is effectively atomized by the heating element 23 .
  • the aforementioned predetermined distance may be determined according to the heat radiation area of the heating element 23 and the thermal conductivity of the porous body 21 .
  • the barrier layer 24 does not need to be provided on the part that can be effectively heated and heated, and the barrier layer 24 can be provided on the part that cannot be effectively heated to prevent the liquid from flowing to these areas.
  • the barrier layer 24 on the atomizing surface 212 , it is also possible to prevent the condensed and non-atomized liquid droplets from falling into the atomizing chamber 13 , thereby reducing the risk of liquid leakage.
  • the porous body 21 is provided with a ventilating passage 22, and one end of the ventilating passage 22 communicates with the liquid storage cavity 12, and the ventilating passage 22 The other end communicates with the atomizing chamber 13 , and the ventilation channel 22 allows outside air to enter the liquid storage chamber 12 and prevents the liquid in the liquid storage chamber 13 from flowing out.
  • the ventilation channel 22 is used to ventilate the liquid storage chamber 12 . After the liquid in the liquid storage chamber 12 flows into the porous body 21 , the air pressure in the liquid storage chamber 12 decreases, which may prevent the liquid from further penetrating into the porous body 21 .
  • the ventilation channel 22 plays a role at this time, and after the air pressure of the liquid storage chamber 12 decreases, air can flow from the ventilation channel 22 into the liquid storage chamber 12 to achieve air pressure balance.
  • the porous body 21 is provided with at least one ventilation channel 22 , wherein the first end of the ventilation channel 22 can communicate with the outside atmosphere, and the second end of the ventilation channel 22 can communicate with the liquid storage chamber 12 .
  • the sensor in the vaping component 100 can be triggered, which can drive the heating element 23 to start heating, and the e-liquid on the atomizing surface 212 can be heated and atomized, and the formed aerosol can enter the vaping component
  • the air outlet channel 11 of 100 is for the user to inhale.
  • the porous body 21 After the liquid on the porous body 21 is atomized, the porous body 21 will continue to absorb the liquid from the liquid storage chamber 12. After the liquid in the liquid storage chamber 12 gradually decreases, the air pressure in the liquid storage chamber 12 will drop, and negative pressure will easily be formed. This makes it difficult for the e-liquid in the liquid storage chamber 12 to flow to the liquid absorption surface 211 . That is to say, during the pumping process of the user, the negative pressure generated inside the liquid storage chamber 12 is difficult to restore the balance of the internal and external pressure difference through the circulation of gas, so problems such as poor oil supply and sticky core are prone to occur.
  • the outside gas can enter the liquid storage chamber 12 through the ventilation channel 22, so that the air pressure in the liquid storage chamber 12 is equal to the external air pressure. balance, so that the liquid in the liquid storage chamber 12 can flow to the liquid suction surface 211 smoothly.
  • a barrier layer 24 may be formed on the inner wall of the ventilation channel 22 , and at least part of the micropores 214 on the inner wall of the ventilation channel 22 can be filled by the barrier material in the barrier layer 24 . That is to say, the e-liquid in the porous body 21 can enter the ventilation channel 22 through the inner wall surface of the ventilation channel 22, and by setting the barrier layer 24, it can effectively reduce or even prevent the e-liquid in the porous body 21 from entering the ventilation channel 22. In the air channel 22. If the e-liquid enters the ventilation channel 22, on the one hand, the e-liquid may flow into the atomization chamber 13 and cause liquid leakage; Absorb liquid. By disposing the barrier layer 24 on the inner wall surface of the ventilation channel 22, the above problems can be effectively improved.
  • the liquid absorption surface 211 and the atomization surface 212 of the porous body 21 are arranged oppositely, and the ventilation channel 22 runs through the porous body 21 along the extending direction from the liquid absorption surface 211 to the atomization surface 212. That is to say, by setting the liquid absorbing surface 211 and the atomizing surface 212 opposite to each other, the volume of the porous body 21 can be reduced, and the preparation process of the porous body 21 can be simplified. By setting the extension direction of the ventilation channel 22 along the extension direction from the liquid absorbing surface 211 to the atomizing surface 212 and passing through the porous body 21 , the time required for outside air to flow into the liquid storage chamber 12 can be shortened.
  • the ventilation channel 22 is a through hole penetrating through the porous body 21 along the extending direction from the liquid absorbing surface 211 to the atomizing surface 212 .
  • the ventilation channel 22 is a through hole penetrating through the porous body 21 along the extending direction from the liquid absorbing surface 211 to the atomizing surface 212 .
  • the ventilation channel 22 can be arranged on the porous body 21 and distributed at a distance from the outer peripheral surface 213 , and a through hole structure can be formed between the liquid absorbing surface 211 and the atomizing surface 212 .
  • the ventilation channel 22 can also be a groove provided on the outer peripheral surface 213 , and the groove penetrates the porous body 21 along the extending direction from the atomizing surface 212 to the liquid absorbing surface 211 .
  • the ventilation channel 22 is a groove provided on the outer peripheral surface 213 , and the groove penetrates through the porous body 21 along the extending direction from the atomizing surface 212 to the liquid absorbing surface 211 . That is to say, a groove with an opening is provided on the outer peripheral surface 213 , and a through groove structure may be formed between the liquid absorbing surface 211 and the atomizing surface 212 .
  • the inner wall of the groove can cooperate with other structures of the electronic cigarette, such as seals, to form a ventilation channel 22 .
  • the number of ventilation channels 22 is one or more, and the plurality of ventilation channels 22 are arranged at intervals on the outer peripheral surface 213 of the porous body 21 .
  • the number of ventilation channels 22 is one or more, and a plurality of ventilation channels 22 are arranged at intervals on the outer peripheral surface of the porous body 21 . Wherein, when the number of the ventilation channel 22 is one, the ventilation channel 22 may be provided on the outer peripheral surface 213 .
  • the plurality of ventilation channels 22 can be distributed on the outer peripheral surface of the porous body 21 at intervals. By increasing the number of ventilation channels 22, the rate of internal and external air pressure balance can be further improved. It should be noted that, when there are multiple ventilation channels 22, a barrier layer 24 may be provided on the inner wall of some of the ventilation channels 22, or a barrier layer may be provided on the inner wall of each ventilation channel 22. 24, without limitation here.
  • the average pore diameter of the micropores in the barrier area is 2 ⁇ m-60 ⁇ m. Further, the average pore diameter of the micropores 214 in the barrier area is 2 ⁇ m-30 ⁇ m. Further, the average pore diameter of the micropores 214 in the barrier area is 3 ⁇ m-20 ⁇ m.
  • the rate of e-liquid permeation from the barrier area is significantly reduced, and it is difficult for liquid to pass through the barrier layer 24 and form larger droplets on the barrier layer 24 . In this way, the barrier region of the porous body 21 is less prone to liquid leakage.
  • the number of micropores per unit area of the barrier region is 20-300/mm 2 . Further, the number of micropores 214 per unit area of the barrier area is 20-100/mm 2 . Further, the number of micropores 214 per unit area of the barrier area is 30-60/mm 2 .
  • the barrier material blocks the micropores 214 on the outer surface of the porous body 21 , so that the number of micropores 214 on the barrier area is significantly reduced compared with the original porous body 21 .
  • the porous body 21 generally has 160 or more micropores 214 per unit area. After being blocked by the barrier material, the number of micropores 214 is reduced to 100 or less per unit area.
  • the number of microholes 214 and the thickness of the barrier layer 24 can be controlled.
  • the thickness of the barrier layer 24 is larger, the number of micropores 214 can be reduced more easily.
  • the liquid permeability of the barrier layer 24 is also weaker.
  • the porosity of the porous body 21 may range from 40% to 60%. According to different factors such as e-liquid used in actual electronic cigarettes and required aerosol density, the present application can use porous bodies 21 with different porosities.
  • the porous body 21 with a porosity of 40%-60% can quickly transport the e-liquid from the liquid absorbing surface 211 to the atomizing surface 212, and the liquid absorbing speed can meet the user's normal pumping frequency and speed.
  • the porosity of the porous body 21 may also be greater than 60%.
  • the porous body 21 with a larger porosity has a faster liquid penetration rate, and the e-liquid will also quickly move to the atomizing surface 212 in the form of larger droplets.
  • This porous body 21 is suitable for e-liquid with relatively high viscosity.
  • a barrier layer 24 can be provided on the liquid-absorbing surface 211 as a whole, and the micropores 214 on the liquid-absorbing surface 211 can be filled and blocked with the barrier material , the porosity on the liquid-absorbing surface 211 can be reduced to less than or equal to 55%.
  • the porosity of the liquid-absorbing surface 211 may range from 40% to 50%.
  • the average pore diameter of the micropores 214 on the liquid-absorbing surface 211 ranges from 40 ⁇ m to 60 ⁇ m.
  • the average pore diameter of the micropores 214 within this range can ensure that the liquid flows from the liquid-absorbing surface 211 into the porous body 21 smoothly and at a uniform speed. At the same time, the liquid will not rush into the porous body 21 too quickly. If the average pore diameter of the micropores 214 of the liquid-absorbing surface 211 is too large, it may also cause a decrease in the adsorption force for liquid, which in turn reduces the liquid-absorbing rate.
  • a barrier layer 24 can be provided on the atomization surface 212 as a whole, and the micropores 214 on the atomization surface 212 can be filled and blocked with the barrier material .
  • the porosity of the atomizing surface 212 can be reduced to less than or equal to 55%. If the porosity of the atomizing surface 212 is too high, larger droplets may be formed on the atomizing surface 212. Such droplets are difficult to form a uniform aerosol during heating and atomization, which will affect user experience. Moreover, the larger porosity on the atomizing surface 212 may also cause the liquid to drip directly, resulting in the hidden danger of oil leakage.
  • the average pore diameter of the micropores 214 on the atomizing surface 212 ranges from 40 ⁇ m to 60 ⁇ m.
  • the average pore diameter of the micropores 214 within this range can ensure that the liquid flows from the liquid-absorbing surface 211 into the porous body 21 smoothly and at a uniform speed. Further, the liquid will not form too large droplets on the atomizing surface 212 , preventing uneven atomization and droplet dripping.
  • the diameter of the micropores 214 on the atomizing surface 212 is too large, it may cause the liquid droplets to flow out directly and separate from the porous body 21, which can neither achieve the atomization effect nor seriously increase the risk of liquid leakage. For this reason, a relatively thick barrier layer 24 can be provided on the atomizing surface 212 .
  • the barrier layer 24 is a vapor deposited layer, a coating or a printed layer.
  • the barrier layer 24 can be a vapor deposition layer, a coating or a printing layer, and when the barrier layer 24 is a vapor deposition layer, it can be either a physical deposition layer or a chemical deposition layer.
  • Physical vapor deposition includes sputtering and evaporation
  • chemical vapor deposition includes electroplating
  • the coating process for coating includes spray coating and flow coating.
  • the barrier layer 24 can be made by performing a process on the outer peripheral surface 213, and the process can be electroplating, sputtering, vapor deposition, spraying, shower coating, printing, soaking, glazing and the like.
  • the outer surface of the atomizing core 20 can adopt a glazing process (such as dipping glaze, swaying glaze, pouring glaze, brushing glaze, sprinkling glaze, wheel glaze, etc.), and the formed atomizing core 20 blank
  • a glazing process such as dipping glaze, swaying glaze, pouring glaze, brushing glaze, sprinkling glaze, wheel glaze, etc.
  • the surface of the body is glazed and fired at a temperature of 800°C-1400°C.
  • the material used for the outer surface of the atomizing core 20 using the glazing process is a food-grade, medical-grade safe lead-free glaze (the main components are silicon dioxide, zirconia, aluminum oxide, etc.) etc.), and because the non-appearance parts do not need to use colored glaze (usually made of metal oxides, such as oxides of vanadium, chromium, manganese, iron, cobalt, nickel, and copper, etc.) to reduce the possibility of heavy metal leakage from the atomizing core 20 .
  • the main components are silicon dioxide, zirconia, aluminum oxide, etc.
  • colored glaze usually made of metal oxides, such as oxides of vanadium, chromium, manganese, iron, cobalt, nickel, and copper, etc.
  • the barrier layer 24 is a physical vapor deposition layer, wherein physical vapor deposition may include sputtering and evaporation.
  • the barrier layer 24 is a silicon dioxide layer, an aluminum oxide layer, a silicon layer or an aluminum layer.
  • the barrier material in the barrier layer 24 is one or more of alumina, silicon dioxide, aluminum, silicon, borosilicate or nanosilicate.
  • the barrier material in the barrier layer is one of silicon dioxide, aluminum oxide, silicon or aluminum.
  • the resistance temperature of the barrier layer 24 is 200°C-1100°C.
  • the resistance temperature of the barrier layer 24 is 600°C-1000°C.
  • the number of pores per unit area corresponding to the barrier region is 20/mm 2 -300/mm 2 .
  • the number of pores per unit area corresponding to the barrier area is 30/mm 2 -240/mm 2 .
  • the permeability of the barrier area is 0m/s-0.2mm/s.
  • the barrier region has a permeability of 0m/s-0.17mm/s.
  • the electronic atomization assembly 100 further includes an atomizing core seal 30 , the atomizing core seal 30 is sleeved on the porous body 21 , and the atomizing core seal 30 At least part of the outer peripheral surface 213 of the porous body 21 and the edge of the liquid-absorbing surface 211 are covered.
  • the atomizing core seal 30 can cooperate with the barrier layer 24 disposed on the outer peripheral surface 213 and the edge of the liquid-absorbing surface 211 , so as to effectively improve the liquid leakage prevention performance.
  • the atomizing core sealing member 30 is in a bonded and sealed relationship with the outer peripheral surface 213 . This sealing relationship is used to prevent liquid from flowing from the gap between the atomizing core seal 30 and the porous body 21 to the atomizing chamber 13.
  • the outer peripheral surface 213 of the porous body 21 forms a barrier area, it is difficult for liquid to penetrate and move on the outer peripheral surface 213, and the liquid leakage-proof sealing performance between the atomizing core seal 30 and the outer peripheral surface 213 of the porous body 21 is significantly improved.
  • the combination of the two can basically eliminate the phenomenon that the liquid leaks from the gap to the atomizing chamber 13 .
  • the liquid absorbing surface 211 of the porous body 21 communicates with the liquid storage chamber 12 to absorb the e-liquid in the liquid storage chamber 12 .
  • the atomizing core seal 30 can be extended and wrapped around the edge of the liquid-absorbing surface 211 .
  • this edge-wrapping sealing method can also avoid liquid leakage caused by the loose connection between the liquid storage chamber 12 and the liquid-absorbing surface 211 .
  • the barrier layer 24 can be formed on the edge of the liquid-absorbing surface 211 , so that the porous body 21 has a lower liquid-permeable efficiency at the edge of the liquid-absorbing surface 211 .
  • the porous body 21 forms a blocking area at the position where it overlaps with the atomizing core sealing element 30 , and the two cooperate to form a better effect of sealing and blocking liquid.
  • the area where the liquid-absorbing surface 211 faces the liquid-storage chamber 12 can still exhibit good liquid-absorbing performance.
  • the vaping assembly 100 may further include an upper cover 40 and an upper cover sealing member 50 .
  • the upper cover sealing member 50 is sleeved on the outer periphery of the upper cover 40 , and the outer surface of the upper cover sealing member 50 forms an extrusion interference fit with the inner wall of the housing 10 . This interference fit creates a sealed relationship.
  • the top of the upper cover seal 50 can be used to form the liquid storage chamber 12 .
  • the upper cover seal 50 is used to define the area of the liquid storage chamber 12 .
  • the upper cover 40 may have an installation position and a liquid passage cavity communicating with the installation position, and the liquid passage cavity communicates with the liquid storage chamber 12 .
  • the upper cover sealing member 50 avoids the liquid passage chamber, so that the liquid in the liquid storage chamber 12 can flow into the liquid passage chamber.
  • the upper cover sealing member 50 encapsulates and seals the area except the liquid passage cavity, preventing liquid from flowing through.
  • the atomizing core 20 is fixedly arranged at the installation position, and the liquid-absorbing surface 211 communicates with the liquid-through cavity.
  • the liquid absorbing surface 211 of the porous body 21 communicates with the liquid storage chamber 12 through the liquid passage chamber.
  • the liquid in the liquid storage chamber flows to the liquid-absorbing surface 211 through the liquid-through cavity, so as to realize the infiltration of the porous body 21 .
  • the electronic cigarette atomization assembly 100 further includes a lower cover 60, the lower cover 60 is arranged in the housing 10, and the area between the lower cover 60 and the atomization surface 212 of the porous body 21 constitutes the atomization chamber 13,
  • the lower cover 60 supports the atomizing core 20 .
  • the upper part of the housing 10 is provided with an air outlet channel, and the lower part of the housing 10 is open.
  • the lower cover 60 is disposed on the lower portion of the casing 10 .
  • the lower cover 60 can form support for the atomizing core 20 and the atomizing core seal 30, the atomizing core 20 and the atomizing core seal 30 are fixed at the installation position of the upper cover 40, the lower cover 60 Cooperate with the upper cover 40 to fix the atomizing core 20 and the atomizing core seal 30; optionally, the lower cover 60 may have a supporting structure, which can be assembled on the housing 10 to support the atomizing core 20 and the atomizing core 20 through the supporting structure.
  • the atomizing core seal 30 forms a support function, cooperates with the upper cover 40 to fix the atomizing core 20 and the atomizing core seal 30 .
  • An air intake channel may be provided on the lower cover 60 , and the air intake channel communicates with the atomization chamber 13 .
  • the overall airflow path of the atomizing core 20 assembly can be as follows: air enters the air intake channel, enters the atomization chamber 13 and mixes with the smoke, and the mixed air flows into the air outlet channel 11, and finally is inhaled by the user through the air outlet channel 11.
  • a conductive member 70 may also be disposed on the lower cover 60 .
  • the heating element 23 is electrically connected to the conductive element 70 .
  • the conductive element 70 is used to supply power to the heating element 23, so as to realize the function of heating and atomizing.
  • the conductive member 70 can be electrically connected with the pin drawn out from the heating element 23 by abutting, contacting and other means.
  • the vaping assembly 100 may also include a middle cover.
  • the middle cover may be disposed between the upper cover 40 and the lower cover 60 .
  • the middle cover provides functions such as positioning and support for the atomizing core 20 and the atomizing core seal 30 . Utilizing the middle cover can increase the space of the atomizing chamber 13 and provide better support and positioning for the porous body 21 from both the outer peripheral surface 213 and the atomizing surface 212 of the porous body 21 .
  • the present application provides a method for preparing the atomizing core of the above-mentioned electronic atomizing device 100 .
  • the preparation method includes:
  • a porous body 21 having a liquid absorbing surface 211 , an atomizing surface 212 and an outer peripheral surface 213 is prepared.
  • the porous body 21 can be formed by sintering a ceramic material, and has a structure of micropores 214 inside and on the surface.
  • a barrier layer 24 is formed on the outer surface of the porous body 21 .
  • the barrier material in the barrier layer 24 fills at least part of the micropores 214 on the outer surface of the porous body 21 .
  • a barrier material is attached to the outer surface of the porous body 21, so that the outer surface has a barrier region, the liquid permeability efficiency of which is reduced.
  • the heating element 23 is provided on the atomization surface 212 of the porous body 21 .
  • the heating element 23 can be arranged on the atomizing surface 212 by printing, so as to heat and atomize the liquid adsorbed on the atomizing surface 212 .
  • the skeleton powder, surfactant, pore-forming agent carbon powder, sawdust, starch, polyvinyl chloride, etc.
  • one or more of crystalline quartz, alumina, silicon carbide, and titanium oxide are used.
  • the mixed slurry is molded in a molding machine to obtain a molded atomizing core body.
  • the formed atomizing core body can be sintered, and the sintering temperature can be 1000°C-1400°C.
  • At least part of the outer surface of the porous body 21 can form a barrier layer 24, and the barrier material in the barrier layer 24 fills at least part of the micropores 214 on the outer surface of the porous body 21 to form a barrier area.
  • the sintered green body after sintering may be subjected to surface treatment.
  • the surface treatment process includes but not limited to electroplating, sputtering, vapor deposition (deposition), spray coating, flow coating (coating), printing, soaking, glazing (coating), etc.
  • the material used for the barrier layer 24 includes but not Limited to gold, titanium, alumina, silica, carbon, etc.
  • the liquid-absorbing surface 211 and the atomizing surface 212 do not need surface treatment, they can be realized by methods such as shielding protection or material removal.
  • the surface treatment process is sputtering or vacuum evaporation;
  • the material used for the barrier layer 24 is one of silicon dioxide, aluminum oxide, silicon or aluminum.
  • the heat generating body 23 is disposed on the atomizing surface 212 of the porous body 21 .
  • the surface-treated atomizing surface 212 is subjected to heating circuit processing, and the silk-screened atomizing core 20 can be sintered in a reducing atmosphere to finally obtain the required atomizing core 20 .
  • the surface treatment process includes vapor deposition, coating or printing. Coating methods include spray coating and dipping, and this processing method is the easiest to handle, and the formed barrier layer 24 is relatively thick.
  • the thickness of the barrier layer 24 can be precisely controlled by using the vapor deposition process, and it is easy to realize the barrier layer 24 with a specific thickness required.
  • the surface treatment process adopts physical vapor deposition to effectively form the barrier layer 24 with precise size and thickness and the effect of filling the micropores 214 .
  • the porous body 21 is made of silicon oxide or a mixed material of silicon oxide/alumina.
  • the atomization core 20 according to the embodiment of the present invention will be described in detail below in conjunction with specific embodiments.
  • a porous ceramic body as a porous body, and measure the average pore diameter and the number of pores per unit area on the surface of the porous ceramic body at a size of 300 times the SEM window. * The number of holes in the area of 0.7mm is 160, and a barrier layer 24 is formed on the outer peripheral surface of the porous ceramic body; then, a heating circuit is arranged on the atomization surface 212 of the porous ceramic body by screen printing; wherein embodiments 1-2 , 8-11 is to adopt the sputtering method to form a silicon dioxide barrier layer on the outer peripheral surface of the porous body, and embodiment 3-4 is to adopt the sputtering method to form an aluminum oxide barrier layer on the outer peripheral surface of the porous body, wherein the sputtering
  • the specific method is: using magnetron sputtering technology, place the surface of the sample to be treated facing the sputtering direction, and the palladium atoms are continuously sputtered to the surface to be treated under the bombardment of the incident
  • the incident atoms are selected as Ar gas, the reaction gas is high-purity oxygen, the sputtering target is high-purity silicon or aluminum, and the substrate is a silicon wafer or an aluminum wafer;
  • the extending direction from the liquid-absorbing surface 211 to the atomizing surface 212 runs through the groove of the porous ceramic body; through-hole;
  • embodiment 5-6 is to adopt the method for vacuum evaporation to form an aluminum barrier layer on the outer peripheral surface of the porous body;
  • embodiment 7 is to adopt the method for vacuum evaporation to form a silicon barrier layer on the outer peripheral surface of the porous body;
  • the specific method of plating is as follows: the product is put into a vacuum coating machine, and the plating material evaporates a gaseous plating material under the action of a heat source, and forms a coating on the surface of the sample to be treated, and the plating material can be aluminum or silicon; in each embodiment
  • the thickness of barrier layer 24 and the material of barrier layer 24 are set as shown in table 1:
  • the permeability of the e-liquid on the peripheral surface of each embodiment and the comparison is shown in Table 2, wherein the permeability of the e-liquid on the peripheral surface of the porous ceramic body after the barrier layer 24 is set
  • the present application also provides an electronic cigarette.
  • the electronic cigarette includes the above-mentioned electronic cigarette atomization assembly 100 and a cigarette rod assembly. Electrical components are arranged in the tobacco rod device, and the electrical components are electrically connected to the heating element 23 , and the electrical components are configured to supply power to the heating element 23 .
  • An air inlet is formed on the tobacco rod device, and the air inlet communicates with the atomizing chamber 13 .
  • the cigarette rod device and the vaping device 100 are connected to each other in a detachable manner.
  • the electronic cigarette atomization component 100 atomizes liquid substrates such as e-liquid to generate aerosols (smoke), and the air in the atomization chamber 13 and the smoke generated by heating and atomizing the electronic atomization component 100 can be exported through the air outlet channel 11 after mixing .
  • the liquid base can be e-liquid such as e-liquid, and the e-liquid can be atomized by the electronic atomization component 100 to generate smoke.
  • the vaping assembly 100 may include an upper cover 40 , an upper cover seal 50 , a middle cover, a lower cover 60 and a lower cover sealing ring.
  • the liquid storage chamber 12 composed of the casing 10 , the upper cover 40 , the upper cover sealing member 50 , the atomizing core 20 and the sealing member 30 is used to hold the liquid substrate.
  • the upper cover sealing member 50 is fixed in the casing 10 by means of interference fit. This way can seal the assembly gap between the inner side wall of the casing 10 and the outer side wall of the upper cover 40 . Prevent the e-liquid from flowing from the liquid storage chamber 12 to the atomizing chamber 13 through the gap between the inner side wall of the casing 10 and the outer side wall of the upper cover 40 .
  • the atomizing core seal 30 is fixed in the upper cover 40 by interference fit.
  • This assembly method can seal the assembly gap between the outer wall of the atomizing core 20 and the inner wall of the upper cover 40, preventing the e-liquid from the liquid storage through the gap between the outer wall of the atomizing core 20 and the inner wall of the upper cover 40.
  • Chamber 12 flows to atomizing chamber 13 .
  • the poor sealing of the outer peripheral surface 213 of the porous ceramic often leads to liquid leakage.
  • the atomizing core seal 30 can better seal the outer peripheral surface 213 of the porous body 21, which can not only prevent the e-liquid from the liquid storage chamber 12 seeping into the atomizing chamber 13 can also prevent the e-liquid on the outer peripheral surface 213 from being sucked into the user's mouth, which can better meet the customer's use and test requirements, and improve the user's comprehensive use experience.
  • the lower cover 60 is equipped with a conductive member 70, and the conductive member 70 conducts with the battery assembly in the cigarette rod to provide electric energy.
  • the middle cover connects the upper cover 40 and the lower cover 60 , the middle cover mainly plays a supporting role, and the supporting conductive member 70 is in contact with the lead wire of the atomizing core 20 , and also plays a certain role in adjusting the airway suction resistance of the atomizing chamber 13 .
  • the middle cover also provides support for the positioning and installation of the atomizing core 20 .
  • the lower cover 60 and the housing 10 are snap-fitted, and the lower cover sealing ring is used to seal the assembly gap between the lower cover 60 and the housing 10 to prevent leakage of condensed oil in the atomization chamber 13 .
  • the lower cover 60 is provided with a first air inlet and a second air inlet, which mainly serve to connect the air inlet of the cigarette rod device with the air outlet channel 11 of the electronic cigarette device 100 . Furthermore, the cooperation between the first air inlet and the second air inlet provides the main suction resistance and provides users with a comfortable suction experience.
  • the sensor in the electronic cigarette When the user inhales, the sensor in the electronic cigarette is triggered, and a signal is sent to drive the atomizing core 20 to start heating.
  • the liquid matrix is heated and atomized in the atomizing surface 212, and the air passes through the first air inlet and the second air inlet. Enter the atomization chamber 13, and mix the smoke in the atomization chamber 13. After mixing, the smoke passes through the air outlet channel 11 and enters the mouth and nasal cavity of the user.
  • the atomizing core seal 30 can better seal the outer peripheral surface 213 of the porous body 21, preventing the e-liquid from seeping from the liquid storage chamber 12 of the electronic atomization device to the mist.
  • the chemical cavity 13 can also prevent the smoke oil on the outer peripheral surface 213 of the porous body 21 from being sucked into the user's mouth, which can better meet the customer's use and test requirements, and improve the user's comprehensive use experience.
  • the ventilation channel 22 of the atomization core 20 is separated from the e-liquid flow channel, and the ventilation channel 22 and the e-liquid flow channel have no influence on each other, avoiding the When it causes the problem of dry burning and sticky core caused by the backflow of e-liquid on the atomization surface.
  • the surface treatment process is adopted for the porous body 21
  • the surface coverage of the porous material is enhanced, which can greatly reduce the amount of ceramic damage that occurs during assembly (friction, extrusion, etc.) and use (extrusion, vibration, etc.). powder drop phenomenon.
  • the process layer on the outer surface of the porous body 21 can withstand the working temperature (180°C-500°C) of the atomization core 20 for atomization.
  • part of the process treatment layer on the outer peripheral surface 213 of the ceramic atomizing core 20 is removed through post-processing (machining: grinding, milling, polishing, etc., laser processing, etc.), Therefore, the surface area of the exposed ceramic porous surface is controlled (for example, ceramics with different surface areas are controlled to leak out), thereby controlling the e-liquid permeability of the outer peripheral surface 213 of the atomizing core 20 .
  • the atomizing core seal 30 is a sealing ring made of soft rubber, such as a silicone material.
  • the inner wall of the atomizing core seal 30 is in close contact with the outer peripheral surface 213 of the atomizing core 20, and with the cooperation of the upper cover 40, the sealing of the outer peripheral surface 213 of the atomizing core 20 is completed to prevent Leakage.
  • the atomizing core seal 30 can better seal the outer peripheral surface 213, prevent the e-liquid from seeping from the liquid storage chamber 12 to the atomizing chamber 13, and also prevent the smoke from the outer peripheral surface 213.
  • the oil is sucked into the user's mouth, which can better meet the customer's use and test requirements, and improve the user's comprehensive use experience.
  • the electronic cigarette of the embodiment of the present invention after the outer surface process treatment of the atomizing core 20 is carried out, since the surface coverage of the outer peripheral surface 213 of the atomizing core 20 is increased, unnecessary e-liquid reflux on the outer peripheral surface 213 is reduced The channel makes it difficult for the e-liquid near the atomizing surface 212 to flow back into the liquid storage chamber 12, thereby ensuring the consistency of the taste before and after the atomization. Moreover, by controlling the thickness or the surface pattern, the depth, pore size, pore size distribution and porosity of the micropores 214 on the surface of the atomization core 20 can be controlled.

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Abstract

L'invention concerne un ensemble d'atomisation de cigarette électronique (100), un procédé de préparation d'un noyau d'atomisation (20) et une cigarette électronique. L'ensemble d'atomisation de cigarette électronique (100) comprend : un boîtier (10), une chambre de stockage de liquide à vapoter (12) et une chambre d'atomisation (13) étant formées dans le boîtier (10), un canal de sortie de vapeur (11) en communication avec l'atmosphère extérieure étant formé sur le boîtier (10), et la chambre d'atomisation (13) étant en communication avec le canal de sortie de vapeur (11) ; et le noyau d'atomisation (20), le noyau d'atomisation (20) étant disposé dans le boîtier (10), le noyau d'atomisation (20) comprenant un corps poreux (21) et un élément chauffant (23), le corps poreux (21) ayant une surface d'absorption de liquide à vapoter (211), une surface d'atomisation (212), et une surface périphérique externe (213) reliant la surface d'absorption de liquide à vapoter (211) et la surface d'atomisation (212), la surface d'absorption de liquide à vapoter (211) étant en communication avec la chambre de stockage de liquide à vapoter (12), la surface d'atomisation (212) étant en communication avec la chambre d'atomisation (13), l'élément chauffant (23) étant disposé sur la surface d'atomisation (212), au moins une partie de la surface extérieure du corps poreux (21) étant pourvue d'une couche barrière (24), au moins certains micropores sur la surface extérieure du corps poreux (21) étant remplis d'un matériau barrière dans la couche barrière (24), et la couche barrière (24) ayant une épaisseur inférieure à 0,1 mm et supérieure à 0,05 µm.
PCT/CN2021/122898 2021-07-24 2021-10-09 Ensemble d'atomisation de cigarette électronique, procédé de préparation de noyau d'atomisation et cigarette électronique Ceased WO2023004996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110840538.3A CN115670029A (zh) 2021-07-24 2021-07-24 电子烟雾化组件、雾化芯的制备方法和电子烟
CN202110840538.3 2021-07-24

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WO2023004996A1 true WO2023004996A1 (fr) 2023-02-02

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PCT/CN2021/122898 Ceased WO2023004996A1 (fr) 2021-07-24 2021-10-09 Ensemble d'atomisation de cigarette électronique, procédé de préparation de noyau d'atomisation et cigarette électronique

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