WO2023019728A1 - Ensemble d'atomisation de cigarette électronique, procédé de préparation d'un noyau d'atomisation, et cigarette électronique - Google Patents

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

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Publication number
WO2023019728A1
WO2023019728A1 PCT/CN2021/126463 CN2021126463W WO2023019728A1 WO 2023019728 A1 WO2023019728 A1 WO 2023019728A1 CN 2021126463 W CN2021126463 W CN 2021126463W WO 2023019728 A1 WO2023019728 A1 WO 2023019728A1
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WIPO (PCT)
Prior art keywords
sealing layer
atomization
porous body
sealing
liquid
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PCT/CN2021/126463
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English (en)
Chinese (zh)
Inventor
唐建国
金奇斌
卢音波
Original Assignee
比亚迪精密制造有限公司
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Publication of WO2023019728A1 publication Critical patent/WO2023019728A1/fr

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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
    • A24F40/10—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
    • A24F40/42—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
    • A24F40/48—Fluid transfer means, e.g. pumps
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F47/00—Smokers' requisites not otherwise provided for

Definitions

  • the present disclosure 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 technical points that affect the user experience include the speed and uniformity of the e-liquid filling the atomizing core, the degree of sufficient atomization of the e-liquid, and whether the heating components of the atomizer can be started in time.
  • the atomizer core usually adopts porous material to absorb e-liquid. Porous materials have the properties of absorbing and conducting liquids.
  • the atomizer core seal is assembled around the atomizer core to realize the peripheral seal of the atomizer core. The assembly of the atomizer core seal and the atomizer core is due to the tolerance of each part and the roughness of the ceramic surface. , may cause smoke oil leakage.
  • An object of the present disclosure is to provide a new technical solution of an electronic atomization component, which can solve the technical problem of poor sealing effect between the porous body and the casing in the prior art.
  • Another object of the present disclosure is to provide a method for preparing an atomizing core of an electronic cigarette atomizing component.
  • Another object of the present disclosure is to provide an electronic cigarette.
  • an electronic cigarette atomization assembly comprising: a casing, the casing has a liquid storage chamber and an atomization chamber inside, the casing is provided with an air outlet channel, and the atomization chamber communicated with the air outlet channel; an atomizing core, the atomizing core is arranged in the housing, the atomizing core includes a porous body and a heating element, and the porous body has a liquid-absorbing surface and an atomizing surface oppositely arranged , the liquid-absorbing surface communicates with the liquid storage chamber, the atomizing surface communicates with the atomizing chamber, the heating element is arranged on the atomizing surface; at least part of the outer surface of the porous body is provided with The first sealing layer is provided with a second sealing layer on at least part of the outer surface of the first sealing layer, the second sealing layer is in contact with the inner wall surface of the housing to form a seal, and the hardness of the first sealing layer is greater than the hardness of the second sealing layer.
  • a ventilation channel is provided on the first sealing layer, one end of the ventilation channel communicates with the liquid storage chamber, and the other end of the ventilation channel communicates with the atomization chamber,
  • the ventilation channel is used to adjust the pressure difference between the pressure of the liquid storage chamber and the external atmospheric pressure.
  • the ventilation channel is a through hole penetrating through the first sealing layer along the extending direction from the liquid absorbing surface to the atomizing surface.
  • the ventilation channel is a first groove provided on the outer surface of the first sealing layer, and the first groove is along the direction from the atomization surface to the liquid absorption surface. The extending direction of the first sealing layer passes through.
  • the multiple ventilation channels are arranged at intervals on the outer surface of the first sealing layer.
  • the porous body has an outer peripheral surface connecting the atomization surface and the liquid absorption surface
  • the first sealing layer includes a plurality of sealing sections, and the plurality of sealing sections are arranged at intervals the outer peripheral surface of the porous body.
  • the porous body has an outer peripheral surface connecting the atomizing surface and the liquid-absorbing surface, the outer peripheral surface of the porous body is provided with a protrusion, and the first sealing layer has a second Two grooves, the first sealing layer is injection molded on the outside of the protrusion, and the protrusion is located in the second groove.
  • the second sealing layer is integrally formed with the first sealing layer.
  • the porous body has an outer peripheral surface connecting the atomization surface and the liquid absorption surface, and the second sealing layer covers the first sealing layer and the first sealing layer The exposed outer peripheral surface.
  • the second sealing layer includes: a first sealing part, the first side of the first sealing part is connected to the first sealing layer or the outer surface, and the first sealing The second side of the part is connected to the inner wall surface of the housing, the first sealing part and the first groove surround to form the ventilation channel; the second sealing part, the second sealing part and the The edge of the first sealing part is butted, and the second sealing part is arranged opposite to the liquid-absorbing surface; wherein, when the air pressure of the liquid storage chamber is greater than or equal to the external atmospheric pressure, the second sealing part and the The liquid-absorbing surface is attached, and the second sealing part can close the ventilation channel; when the air pressure in the liquid storage chamber is lower than the external atmospheric pressure, the gap between the second sealing part and the liquid-absorbing surface There is a gap between them, the gap communicates with the ventilation channel, and the second sealing part can open the ventilation channel.
  • elastic ribs are provided on the outer surface of the second sealing layer, and the elastic ribs abut against the inner wall surface of the housing.
  • 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 atomizer of the porous body The area between the atomization surfaces constitutes the atomization chamber, and the lower cover forms a support for the atomization core; an electrical connector, the electrical connector is electrically connected to the heating element; the lower cover is provided with an air intake channel, the air intake channel communicates with the atomization chamber;
  • the lower cover is provided with a conductive element, and the conductive element forms an electrical connection with the electrical connecting element.
  • the second sealing layer is provided with a support portion, and the support portion and the heating element are arranged in a staggered manner on the atomizing surface.
  • a pad is provided on the supporting part, and a limiting slot is formed on the pad, the electrical connector has a first segment and a second segment, and the first segment of the electrical connector The first segment is electrically connected to the heating element, and the second segment of the electrical connector is embedded in the limiting groove and electrically connected to the conductive member.
  • the limiting groove is in interference fit with the electrical connector.
  • the pad protrudes from the support portion, and the pad and the conductive member are located on both sides of the second segment and form abutting contact with the second segment respectively.
  • 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 and an atomization surface; A heating element is arranged on the atomizing surface of the porous body; at least a part of the surface of the porous body is formed into an integral structure with the first sealing layer and the second sealing layer by two-color injection molding, and a second sealing layer is provided on at least part of the outer surface of the porous body.
  • a sealing layer, a second sealing layer is provided on at least part of the outer surface of the first sealing layer, and the hardness of the first sealing layer is greater than that of the second sealing layer.
  • 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 atomizing core can be directly installed in the casing during installation, without the need for an installation between the atomizing core and the casing.
  • a ring of seals is sleeved between them, which can realize the sealed connection between the atomizing core and the inner wall surface of the housing.
  • the lower shrinkage of the first sealing layer and the second sealing layer can be used to improve the dimensional accuracy of the atomizing core, thereby improving The sealing effect between the atomizing core and the shell.
  • Fig. 1 is a structural schematic diagram of an angle of the atomization core of the electronic cigarette atomization assembly provided by the present disclosure
  • Fig. 2 is a structural schematic diagram of another angle of the atomization core of the electronic cigarette atomization assembly provided by the present disclosure
  • Fig. 3 is a structural schematic diagram of another angle of the atomization core of the electronic cigarette atomization assembly provided by the present disclosure
  • Fig. 4 is a side sectional structural schematic diagram of the atomization core of the electronic cigarette atomization assembly provided by the present disclosure
  • Fig. 5 is a schematic diagram of a side cross-sectional structure of an electronic vaporization component provided by the present disclosure
  • FIG. 6 is an exploded view of an electronic cigarette atomization component provided by the present disclosure.
  • Porous body 21 liquid-absorbing surface 211; atomizing surface 212; outer peripheral surface 213; raised portion 214;
  • Heating body 24
  • Electrical connector 25 first segment 251; second segment 252;
  • the electronic cigarette atomization assembly 100 provided by this solution includes a casing 10 and an atomization core 20 .
  • the housing 10 has a liquid storage chamber 12 and an atomizing chamber 13, the housing 10 is provided with an air outlet channel 11, the atomizing chamber 13 communicates with the air outlet channel 11, and the atomizing core 20 is arranged in the housing 10.
  • the atomizing core 20 includes a porous body 21 and a heating element 24.
  • the porous body 21 has a liquid-absorbing surface 211 and an atomizing surface 212 oppositely arranged.
  • the liquid-absorbing surface 211 communicates with the liquid storage chamber 12.
  • the heating element 24 is disposed on the atomizing surface 212 .
  • At least part of the outer surface of the porous body 21 is provided with a first sealing layer 22, and at least part of the outer surface of the first sealing layer 22 is provided with a second sealing layer 23, and the second sealing layer 23 is in contact with the inner wall surface of the housing 10 to form a seal.
  • the hardness of the first sealing layer 22 is greater than that of the second sealing layer 23 .
  • the casing 10 has a liquid storage chamber 12 and an atomizing chamber 13 inside.
  • the liquid storage chamber 12 is used for storing e-liquid.
  • the casing 10 is provided with an air outlet channel 11 , and the atomization chamber 13 communicates with the air outlet channel 11 .
  • the air outlet channel 11 can communicate with the outside atmosphere.
  • 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 24 .
  • the porous body 21 is used for infiltrating and absorbing e-liquid.
  • the porous body 21 has a liquid absorbing surface 211 and an 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 24 is disposed on the atomizing surface 212 .
  • the heating element 24 can heat and atomize the e-liquid in the porous body 21 that is transferred to the atomizing surface 212 , forming smoke that enters the atomizing chamber 13 , and enters the air outlet channel 11 through the atomizing chamber 13 , thereby being inhaled by the user.
  • the liquid absorbing surface 211 and the atomizing surface 212 are oppositely arranged. It should be noted that the relative positional relationship between the liquid absorbing surface 211 and the atomizing surface 212 includes but is not limited to facing directly. By setting the liquid absorbing surface 211 and the atomizing surface 212 opposite to each other, it is convenient to reduce the volume of the porous body 21 and simplify the preparation process of the porous body 21 .
  • Micropores are distributed on the porous body 21 , and these micropores 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 first sealing layer 22 is a layer structure in which a hard material is formed on at least part of the outer surface of the porous body 21 by means of injection molding or the like.
  • the hard material can be a dense body such as hard glue, and the hard glue can be plastic.
  • Forming a hard first sealing layer 22 by injection molding on the outer surface of the porous body 21 can not only improve the strength of the surface of the porous body 21, but also improve the bonding force between the first sealing layer 22 and the outer surface of the porous body 21. , it can also effectively reduce the penetration of e-liquid at the contact part between the porous body 21 and the housing 10 under the condition that the porosity of the first sealing layer 22 is lower than that of the porous body 21, and improve the gap between the porous body 21 and the housing 10. of tightness.
  • the second sealing layer 23 is a layer structure in which a soft material is formed on at least part of the outer surface of the first sealing layer 22 by means of injection molding or the like.
  • the soft material can be a dense body such as soft glue. Since the second sealing layer 23 is made of a soft material, when the second sealing layer 23 is in contact with the inner wall of the housing 10, not only the sealing effect between the second sealing layer 23 and the inner wall of the housing 10 can be ensured, but also Abrasion caused by the hard inner wall of the casing 10 facing the outer surface of the porous body 21 can be avoided.
  • the soft second sealing layer 23 has a sealing function, which can prevent the e-liquid from seeping from the liquid storage chamber 12 to the atomizing chamber 13, and can also prevent the e-liquid on the side of the atomizing core 20 from being sucked into the user's mouth. It better meets the customer's use and testing requirements, and improves the user's comprehensive experience.
  • the atomizing core 20 can become a structure having both holes and sealing effects.
  • the surface strength of the atomizing core 20 is enhanced, reducing the phenomenon of powder falling due to assembly (friction, extrusion, etc.) and use (extrusion, vibration, etc.) .
  • the atomizing core 20 can be directly installed in the casing 10 , the second sealing layer 23 has a sealing function, and there is no need to add an atomizing core seal, thereby reducing the number of parts and saving component manufacturing costs. That is to say, in practical application, the edge of the atomizing core 20 can realize sealing without cooperating with other components, preventing the penetration of e-liquid.
  • the outer contour of the porous body 21 is relatively rough. When the porous body 21 is directly assembled in the housing 10, there will be a large gap between the porous body 21 and the housing 10, which will cause the side wall of the porous body 21 There is leakage of e-liquid between the inner wall surface of the housing 10 and the housing 10 .
  • the production process of the porous body 21 needs to be injection molded and then sintered.
  • the molding temperature of the porous body 21 is approximately 800°C-900°C, and cold shrinkage is required after molding.
  • the shrinkage rate of the porous body 21 is relatively large, and the amount of deformation is also relatively large.
  • the shrinkage rate of the plastic is small when the plastic is injected on the outer surface of the porous body 21 . Therefore, the dimensional accuracy of the final atomizing core 20 is high, and thus the atomizing core 20 and the housing 10 have a better sealing effect when contacting and sealing.
  • the existing method of adding a sealing ring to the outer peripheral surface of the atomizing core not only has the disadvantages of taking up a large space and inconvenient assembly, but also has the disadvantage of being difficult to overcome the large deformation of the porous body 21 through the sealing ring, resulting in The disadvantage of poor local sealing effect.
  • the first sealing layer 22 and the second sealing layer 23 are molded by placing the porous body 21 on the mold, and the shrinkage rate of the soft rubber and the hard rubber is very small.
  • the atomization core 20 is a composite material combination mainly composed of the porous body 21, the first sealing layer 22 and the second sealing layer 23.
  • the sealing can be realized by the cooperation of the atomizing core 20 and the housing 10, and the components in the housing 10 occupy less space, which ensures the sealing between the atomizing core 20 and the housing 10, and simplifies the assembly process of the electronic cigarette and assembly difficulty.
  • the lower shrinkage of the first sealing layer 22 and the second sealing layer 23 can be used to improve the resistance of the atomizing core 20. Dimensional accuracy, thereby improving the sealing effect between the atomizing core 20 and the housing 10 .
  • the first sealing layer 22 is provided with a ventilation channel 221, one end of the ventilation channel 221 communicates with the liquid storage chamber 12, and the other end of the ventilation channel 221 communicates with the atomization chamber.
  • the ventilation channel 221 is used to adjust the pressure difference between the pressure of the liquid storage chamber 12 and the external atmospheric pressure, that is, the ventilation channel 221 is used to supplement the gas in the liquid storage chamber 12.
  • 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 passage 221 plays a role at this time, and after the air pressure of the liquid storage chamber 12 decreases, air can flow into the liquid storage chamber 12 from the ventilation passage 221 to achieve air pressure balance.
  • the first sealing layer 22 is provided with a ventilation channel 221 , wherein the first end of the ventilation channel 221 can communicate with the outside atmosphere, and the second end of the ventilation channel 221 can communicate with the liquid storage chamber 12 .
  • the sensor in the vaping component 100 can be triggered to drive the heating element 24 to start heating, the vape oil 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 221, 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.
  • the first sealing layer 22 is made of hard plastic and other materials, holes are opened on the first sealing layer 22, on the one hand, avoiding the porous body 21 caused by opening the ventilation channel 221 on the porous body 21. Breakage occurs, or the powdery material of the porous body 21 enters the ventilation channel 221, resulting in the blockage of the ventilation channel 221. On the other hand, it avoids setting up a ventilation system on the second sealing layer 23 made of soft materials. When the channel 221 is opened, the resulting ventilation channel 221 is prone to be skewed during the opening process.
  • the ventilation channel 221 is provided on the hard glue, because the flatness of the hard glue is relatively smooth, it is beneficial to use the first sealing layer 22 or other structures to seal the ventilation channel 221 .
  • the ventilation channel 221 is provided on the porous body 21, and the surface of the porous body 21 is relatively rough. When the first sealing layer 22 or other structures are used to seal the ventilation channel 221, the sealing effect is not good.
  • the liquid dense body can be filled in the porous body 21.
  • the bonding force between the two is improved.
  • the sealing ring cannot fill the microporous structure, and the sealing effect between the two is relatively poor.
  • the ventilation channel 221 is a through hole penetrating through the first sealing layer 22 along the extending direction from the liquid absorbing surface 211 to the atomizing surface 212 . That is to say, the ventilation channel 221 is a through hole penetrating through the first sealing layer 22 along the extending direction from the liquid absorbing surface 211 to the atomizing surface 212 .
  • the ventilation channel 221 may be disposed on the first sealing layer 22 and distributed at a distance from the outer peripheral surface 213 of the first sealing layer 22 , and a through hole structure may be formed between the liquid absorbing surface 211 and the atomizing surface 212 .
  • the time required for outside air to flow into the liquid storage chamber 12 can be shortened.
  • the ventilation channel 221 is a first groove 222 provided on the outer surface of the first sealing layer 22, and the first groove 222 extends from the atomizing surface 212 to the liquid absorbing surface.
  • the extending direction of the surface 211 passes through the first sealing layer 22 .
  • the ventilation channel 221 is a first groove 222 provided on the outer surface of the first sealing layer 22 , and the first groove 222 penetrates through the first sealing layer 22 along the extending direction from the atomizing surface 212 to the liquid absorbing surface 211 . That is to say, a first groove 222 with an opening is formed on the outer surface of the first sealing layer 22 , and a through groove structure may be formed between the liquid absorbing surface 211 and the atomizing surface 212 .
  • the inner wall of the first groove 222 can cooperate with the inner wall of the second sealing layer 23 to form a ventilation channel 221 .
  • the ventilation channel 221 there are multiple ventilation channels 221 , and the plurality of ventilation channels 221 are arranged on the outer surface of the first sealing layer 22 at intervals. Wherein, when the number of the ventilation channel 221 is one, the ventilation channel 221 may be arranged on the outer surface of the first sealing layer 22 .
  • the plurality of ventilation channels 221 can be spaced apart and distributed on the outer surface of the first sealing layer 22 , by increasing the number of ventilation channels 221 , the speed of internal and external air pressure balance can be further improved.
  • the porous body 21 has an outer peripheral surface 213 connecting the atomizing surface 212 and the liquid absorption surface 211, the first sealing layer 22 is a ring, and the first sealing layer 22 is ring-shaped on the outer peripheral surface 213, That is, the first sealing layer 22 extends around the circumference of the outer peripheral surface 213 , which can greatly increase the sealing effect between the outer peripheral surface 213 and the housing 10 , and avoid local leakage of e-liquid between the outer peripheral surface 213 and the housing 10 .
  • the porous body 21 has an outer peripheral surface 213 connecting the atomizing surface 212 and the liquid absorption surface 211
  • the first sealing layer 22 includes a plurality of sealing sections
  • the plurality of sealing sections Spaces are provided on the outer peripheral surface 213 of the porous body 21 .
  • the first sealing layer 22 may include a plurality of sealing segments, and each sealing segment may be formed on the outer peripheral surface 213 by means of injection molding or the like. There is a gap between two adjacent sealing segments.
  • the number of sealing segments can be 2 or more, either an even number or an odd number, which is not limited here.
  • the porous body 21 has an outer peripheral surface 213 connecting the atomizing surface 212 and the liquid-absorbing surface 211, the outer peripheral surface 213 of the porous body 21 is provided with a protrusion 214, the first sealing layer 22 has a second groove 226, the second A sealing layer 22 is injection molded on the outside of the protruding portion 214 , and the protruding portion 214 is located in the second groove 226 after molding. That is to say, when producing the atomizing core 20 , the porous body 21 may be provided with a raised portion 214 , and then the first sealing layer 22 may be formed around the raised portion 214 by injection molding.
  • the porous body 21 is roughly a rectangular piece, and the short side of the porous body 21 is provided with a protruding portion 214 protruding from the short side.
  • the first sealing layer 22 is injection molded on the outside of the protruding portion 214 , the molded first sealing layer 22 is formed with a second groove 222 , and the protrusion 214 is inserted into the second groove 226 .
  • the molded porous body 21 and the first sealing layer 22 can cooperate to form a complete rectangular-like piece, which is conducive to re-injection molding on the first sealing layer 22 and the outer peripheral surface 213 except for the first sealing layer 22
  • a second sealing layer 23 is formed.
  • the first sealing layer 22 is a U-shaped piece. The smooth transition between the outer peripheral surface 213 of the first sealing layer 22 and the outer peripheral surface 213 of the porous body 21 facilitates the injection molding of the second sealing layer 23 .
  • the second sealing layer 23 and the first sealing layer 22 are integrally formed, and the integrated forming process not only helps to improve the bonding force between the first sealing layer 22 and the second sealing layer 23 Improvement can also simplify the production and processing process of the first sealing layer 22 and the second sealing layer 23, which is beneficial to combine the porous body 21, the first sealing layer 22 and the second sealing layer 23 into an integral molded part.
  • the porous body 21 has an outer peripheral surface 213 connecting the atomizing surface 212 and the liquid absorption surface 211 , and the second sealing layer 23 covers the first sealing layer 22 and the exposed outer peripheral surface 213 on the first sealing layer 22 . That is to say, the first sealing layer 22 may partially cover the outer peripheral surface 213 of the porous body 21 , or may completely cover the outer peripheral surface 213 of the porous body 21 .
  • the outer peripheral surface 213 of the porous body 21 can be divided into a first area and a second area, wherein the first area is the area covered by the first sealing layer 22, The second area is an area not covered by the first sealing layer 22 , and the outer peripheral surface 213 of the porous body 21 is exposed from the second area.
  • the second sealing layer 23 can cover not only the first region but also the second region.
  • the first sealing layer 22 completely covers the outer peripheral surface 213 of the porous body 21
  • the second sealing layer 23 can cover the first sealing layer 22 . That is to say, the first sealing layer 22 can be an annular member, which can effectively prevent local leakage at the joint between the atomizing core 20 and the inner wall of the casing 10 .
  • the second sealing layer 23 includes: a first sealing portion 231 and a second sealing portion 232 , the first side of the first sealing portion 231 is in contact with the first sealing layer 22 or the outer surface. Surface connection, the second side of the first sealing portion 231 is connected to the inner wall surface of the housing 10 .
  • the first sealing portion 231 may be connected to the first sealing layer 22 , and the outer surface may be in contact with and sealed against the inner wall surface of the casing 10 .
  • Another part of the inner surface of the first sealing portion 231 may be connected to the outer peripheral surface 213 of the porous body 21 , and the outer surface may be in contact with and sealed against the inner wall surface of the casing 10 .
  • the inner surface of the first sealing part 231 can be connected to the outer peripheral surface 213 of the porous body 21, and the outer surface can be in contact with the inner wall surface of the housing 10 and sealed.
  • the first sealing portion 231 and the first groove 222 are enclosed to form a ventilation channel 221 , that is, the first sealing portion 231 can be arranged opposite to the position of the first groove 222 , Moreover, the inner surface of the first sealing portion 231 and the inner wall of the first groove 222 can enclose the ventilation channel 221 .
  • the second sealing part 232 is in contact with the edge of the first sealing part 231 , and the second sealing part 232 is opposite to the liquid-absorbing surface 211 .
  • the liquid-absorbing surface 211 may be located above the atomizing surface 212
  • the first sealing portion 231 may extend approximately in the vertical direction
  • the outer edge of the second sealing portion 232 It can be connected with the upper end of the first sealing part 231 , and the inner edge of the second sealing part 232 can extend toward the center of the atomizing core 20 .
  • the second sealing portion 232 when the air pressure of the liquid storage chamber 12 is greater than or equal to the external atmospheric pressure, the second sealing portion 232 is attached to the liquid-absorbing surface 211 , and the second sealing portion 232 can close the ventilation channel 221 .
  • the gap When the air pressure in the liquid storage chamber 12 is lower than the external atmospheric pressure, there is a gap between the second sealing portion 232 and the liquid-absorbing surface 211 , the gap communicates with the ventilation channel 221 , and the second sealing portion 232 can open the ventilation channel 221 . That is to say, the second sealing part 232 is movable relative to the liquid-absorbing surface 211 and can be switched between two states.
  • the second sealing portion 232 can be attached to the liquid absorption surface 211 to close the ventilation channel 221 .
  • the second sealing portion 232 is separated from the liquid-absorbing surface 211 to form a gap, and the gap communicates with the ventilation channel 221, and the second sealing portion 232 can open the ventilation channel 221 .
  • the ventilation channel 221 may also pass through the first sealing part along the extending direction from the liquid absorbing surface 211 to the atomizing surface 212. Layer 22 vias.
  • the second sealing part 232 can also realize the closing or opening of the ventilation channel 221 by switching between the two states.
  • the second sealing part 232 is matched with the first groove 222, because the first groove 222 is closer to the second sealing part 232 and the first sealing part 231 Therefore, the ventilation channel 221 can be more effectively closed by the second sealing portion 232 .
  • elastic ribs 233 are provided on the outer surface of the second sealing layer 23 , and the elastic ribs 233 abut against the inner wall surface of the casing 10 . That is to say, the elastic rib 233 abuts against the inner wall of the housing 10 to further increase the sealing structure between the outer side of the second sealing layer 23 and the inner wall of the housing 10, thereby improving the contact between the second sealing layer 23 and the housing 10. between the sealing effect.
  • the vaping assembly 100 further includes a lower cover 30 and an electrical connector 25 .
  • the lower cover 30 is arranged at the end of the casing 10 away from the air outlet channel 11 , the area between the lower cover 30 and the atomizing surface 212 of the porous body 21 constitutes the atomizing chamber 13 , and the lower cover 30 supports the atomizing core 20 ,
  • the electrical connector 25 is electrically connected to the heating element 24 .
  • the lower cover 30 is provided with an air intake passage 31 , and the air intake passage 31 communicates with the atomization chamber 13 .
  • a conductive element 40 is disposed on the lower cover 30 , and the conductive element 40 forms an electrical connection with the electrical connecting element 25 .
  • the conductive member 40 can be an inverted T-shaped conductive nail.
  • the conductive member 40 When the conductive member 40 is electrically connected to the electrical connector 25 and the power supply component of the electronic cigarette, the current can flow through the conductive member 40 to the electrical connector 25, and finally to the heating element 24. The heat supply of the heating element 24 to the atomizing surface 212 is realized.
  • the lower cover 30 is disposed in the casing 10 , the area between the lower cover 30 and the atomizing surface 212 of the porous body 21 can constitute the atomizing chamber 13 , and the lower cover 30 can support the atomizing core 20 .
  • the upper part of the housing 10 is provided with an air outlet channel 11, and the lower part of the housing 10 is an open structure.
  • the lower cover 30 is disposed on the lower portion of the casing 10 .
  • a limiting portion is provided on the second sealing layer 23, and the limiting portion and the electrical connector 25 are detachable. ground connection.
  • the position of the electrical connector 25 can be limited by the limiting part.
  • the limiting portion may be a structure in which the limiting groove 236 can limit the position of the electrical connector 25 .
  • the second sealing layer 23 is provided with a support portion 234 , and the support portion 234 and the heating element 24 are arranged in a staggered manner on the atomizing surface 212 .
  • the position of the electrical connector 25 can be limited by the support portion 234 .
  • the atomizing surface 212 is roughly rectangular, the first sealing portion 231 of the second sealing layer 23 surrounds the edge of the atomizing surface 212, the number of electrical connectors 25 is two, and the two electrical connectors 25 are along the fog
  • the chemical surface 212 extends in the longitudinal direction.
  • the support part 234 is formed in a long strip shape, and the number of the support part 234 may be two, and the two support parts 234 correspond to the two electrical connectors 25 one-to-one.
  • One end of each supporting portion 234 is connected to one long side of the atomizing surface 212
  • the other end of each supporting portion 234 is connected to the other long side of the atomizing surface 212 . That is, the supporting portion 234 is disposed opposite to the wide side of the atomizing surface 212 .
  • the support part 234 can avoid covering too much atomizing surface 212 .
  • the material of the support part 234 is also a soft material, such as silica gel, etc., which can be more resistant to high temperature and avoid deformation or even melting due to heat generated by the atomizing surface 212. .
  • the supporting portion 234 is engaged with the electrical connector 25 .
  • a pad 235 is provided on the support portion 234, and a limiting groove 236 is formed on the pad 235.
  • the electrical connector 25 has a first segment 251 and a second segment 252.
  • the electrical connector 25 The first segment 251 is electrically connected to the heating element 24 , and the second segment 252 of the electrical connector 25 is embedded in the limiting groove 236 to be electrically connected to the conductive member 40 .
  • the limiting groove 236 forms a limiting effect on the second segment 252 , ensuring that the position of the second segment 252 does not shift, and improving the reliability of the contact between the second segment 252 and the conductive member 40 .
  • the second segment 252 is inserted into the limiting slot 236 , and the top of the conductive member 40 abuts against the second segment 252 from the position of the notch of the limiting slot 236 , so that the second segment 252 is positioned in the limiting slot 236 .
  • the pad 235 is also an elastic boss structure, so that the pad 235 has a deformation function, which can further improve the positioning effect on the second section 252 .
  • the interference fit between the limiting groove 236 and the electrical connector 25 can effectively improve the clamping force on the electrical connector 25 and improve the contact between the electrical connector 25 and the conductive member 40 stability and reliability.
  • the pad 235 protrudes from the supporting portion 234 , and the pad 235 and the conductive member 40 are located on two sides of the second segment 252 and abut against the second segment 252 respectively.
  • the pad platform 235 and the conductive member 40 are located on both sides of the second segment 252 and form abutting pads 235 and the conductive member 40 with the second segment 252 respectively, so that the second segment 252 can be clamped in the middle, so that the second segment 252
  • the second section 252 is fixed. This can ensure that the second segment 252 is in effective contact with the conductive element 40 , so that the current on the conductive element 40 can be transmitted to the heating element 24 through the second segment 252 .
  • the pad 235 is also an elastic boss structure, so that the pad 235 has a deformation function.
  • the air entering the air intake channel 31 meets the smoke in the atomizing chamber 13 , some of the smoke will not be sucked out, and then condense into liquid droplets.
  • the condensed liquid droplets can be absorbed by the oil absorber arranged on the lower cover 30 to prevent the liquid droplets from leaking out from the air intake channel 31 .
  • the lower cover 30 can be fixed to the housing 10 through buckles, and the ends of the supporting ribs around the lower cover 30 support the atomizing core 20 fixed.
  • the structure is simple in design and reliable in fixing, thereby increasing the space of the atomizing chamber 13 .
  • the present disclosure provides a preparation method for preparing the atomization core 20 of the above-mentioned electronic cigarette atomization component 100, and the preparation method includes the following steps:
  • the porous body 21 is prepared.
  • the porous body 21 has a liquid absorbing surface 211 and an atomizing surface 212.
  • the porous body 21 can be formed by sintering ceramic materials, and its interior and surface have a microporous structure.
  • the heating element 24 is provided on the atomization surface 212 of the porous body 21 .
  • the heating element 24 can be arranged on the atomizing surface 212 by means of printing or the like, so as to heat and atomize the liquid adsorbed on the atomizing surface 212 .
  • At least a part of the surface of the porous body 21 is formed into an integral structure with the first sealing layer 22 and the second sealing layer 23 by two-color injection molding. At least a part of the outer surface of the porous body 21 is provided with a first sealing layer 22. At least part of the outer surface of the layer 22 is provided with a second sealing layer 23 , the hardness of the first sealing layer 22 being greater than that of the second sealing layer 23 .
  • the first sealing layer 22 may be a plastic dense body, and the second sealing layer 23 may be a soft rubber dense body. The provision of the first sealing layer 22 can not only improve the strength of the porous body 21 and the anti-leakage effect of e-liquid, but also facilitate injection molding of the second sealing layer 23 .
  • the sealing contact between the atomizing core 20 and the inner wall surface of the casing 10 can be realized by setting the second sealing layer 23 , and there is no need to additionally provide a sealing ring between the atomizing core 20 and the inner wall surface of the casing 10 .
  • first sealing layer 22 and the second sealing layer 23 are formed by two-color injection molding, which can improve the bonding force between the first sealing layer 22, the second sealing layer 23 and the porous body 21, and reduce the atomizing core. 20 shrinkage rate and deformation amount, thereby improving the dimensional accuracy of the atomizing core 20 .
  • the skeleton powder, surfactant, pore-forming agent (carbon powder, sawdust, starch, polyvinyl chloride, etc.) and molding additives and sintering aids can be mixed first.
  • the mixed slurry is then molded in a molding machine, the principle of which is similar to injection molding.
  • the formed porous body body can be sintered at a sintering temperature of 1000°C-1400°C.
  • the upper and lower surfaces of the sintered porous body 21 can be mechanically processed to control the required dimensional accuracy. Then, the surface-treated porous body 21 is subjected to heating circuit processing. The screen-printed porous body 21 is sintered in a reducing atmosphere. Then the sintered porous body 21 is injected to form the first sealing layer 22 and the second sealing layer 23 to form a composite material combination. Finally, the two electrical connectors 25 of the composite material combination are respectively bent and put into the limiting slots 236 on both sides.
  • the present disclosure 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 cigarette rod device, and the electrical components are electrically connected to the heating element 24, and the electrical components are configured to supply power to the heating element 24.
  • 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 atomizing core 20 adopts a combination of composite materials. Since the second sealing layer 23 has a sealing function, the assembly of the atomizing core 20 into the electronic cigarette can not only prevent the smoke oil from storage The seepage of the liquid chamber 12 into the atomizing chamber 13 can also prevent the smoke oil on the side of the atomizing core 20 from being sucked into the user's mouth, which can better meet the customer's use and testing requirements, and improve the user's comprehensive use experience. In addition, there is no need to provide a sealing ring between the atomizing core 20 and the inner wall surface of the housing 10 , reducing the number of parts and saving assembly manufacturing costs.

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Abstract

Ensemble d'atomisation de cigarette électronique (100), procédé de préparation d'un noyau d'atomisation (20), et cigarette électronique. L'ensemble d'atomisation de cigarette électronique (100) comprend : un logement (10), une cavité de stockage de liquide (12) et une cavité d'atomisation (13) étant disposées à l'intérieur du logement (10), un canal de sortie d'air (11) étant disposé sur le logement (10), et la cavité d'atomisation (13) étant en communication avec le canal de sortie d'air (11) ; et un noyau d'atomisation (20), le noyau d'atomisation (20) étant disposé à l'intérieur du logement (10), le noyau d'atomisation (20) comprenant un corps poreux (21) et un élément chauffant (24), le corps poreux (21) présentant une surface d'absorption de liquide (211) et une surface d'atomisation (212) qui sont agencées à l'opposé l'une de l'autre, la surface d'absorption de liquide (211) étant en communication avec la cavité de stockage de liquide (12), la surface d'atomisation (212) étant en communication avec la cavité d'atomisation (13), et l'élément chauffant (24) étant disposé sur la surface d'atomisation (212) ; une première couche d'étanchéité (22) étant disposée sur au moins une partie de la surface extérieure du corps poreux (21), une seconde couche d'étanchéité (23) étant disposée sur au moins une partie de la surface extérieure de la première couche d'étanchéité (22), la seconde couche d'étanchéité (23) étant en contact avec la surface de paroi intérieure du logement (10) pour former un joint d'étanchéité, et la dureté de la première couche d'étanchéité (22) étant supérieure à celle de la seconde couche d'étanchéité (23).
PCT/CN2021/126463 2021-08-19 2021-10-26 Ensemble d'atomisation de cigarette électronique, procédé de préparation d'un noyau d'atomisation, et cigarette électronique WO2023019728A1 (fr)

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