WO2024046134A1 - Structure d'atomisation, atomiseur et dispositif d'atomisation électronique - Google Patents

Structure d'atomisation, atomiseur et dispositif d'atomisation électronique Download PDF

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Publication number
WO2024046134A1
WO2024046134A1 PCT/CN2023/113462 CN2023113462W WO2024046134A1 WO 2024046134 A1 WO2024046134 A1 WO 2024046134A1 CN 2023113462 W CN2023113462 W CN 2023113462W WO 2024046134 A1 WO2024046134 A1 WO 2024046134A1
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WO
WIPO (PCT)
Prior art keywords
atomization
heating element
sheet
coil
liquid
Prior art date
Application number
PCT/CN2023/113462
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English (en)
Chinese (zh)
Inventor
蓝锦
谢发明
赵沛彪
Original Assignee
深圳麦克韦尔科技有限公司
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Publication date
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Publication of WO2024046134A1 publication Critical patent/WO2024046134A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • 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
    • A24F40/50—Control or monitoring

Definitions

  • the present application relates to the field of atomization technology, and in particular to an atomization structure, an atomizer and an electronic atomization device.
  • Electronic atomization devices usually include an atomization medium carrier, an atomization structure and a power supply component.
  • the atomization medium carrier is used to store the aerosol-generating substrate, and the atomization structure is used to heat and atomize the aerosol-generating substrate to form an aerosol-generating substrate.
  • the aerosol is consumed by the user, and the power component is used to provide power to the atomizing structure.
  • tubular heating element When existing electronic atomization devices atomize liquid media, they generally use a tubular heating element structure for heating and atomization.
  • the tubular heating element has a slow heating rate, which makes the electronic atomizer device uncomfortable to use.
  • an atomization structure an atomizer and an electronic atomization device are provided.
  • An atomization structure including:
  • a mist guide shell with an airflow channel and a receiving cavity formed in the mist guide shell;
  • a liquid guide member is provided in the accommodation cavity, the liquid guide member has an atomization surface and a liquid suction surface arranged oppositely, and the atomization surface is arranged facing the air flow channel;
  • a sheet-shaped heating element is contained in the mist guide shell and is arranged on the atomization surface.
  • the atomization surface is recessed away from the sheet-shaped heating element along the thickness direction to form a receiving groove, and the sheet-shaped heating element is disposed in the receiving groove.
  • the sheet-shaped heating element is configured with a mist-passing hole, and the fog-passing hole penetrates both sides of the sheet-shaped heating element in the thickness direction.
  • a protruding pillar is protruding from the atomizing surface, and the protruding pillar is arranged corresponding to the mist passage hole.
  • the mist guide shell includes a shell body and a sealing sleeve.
  • the airflow channel and the installation channel are formed in the shell body.
  • the installation channel penetrates the shell body and is connected with the airflow channel. connected;
  • the sealing sleeve is sealingly coupled to the installation channel, and the accommodation cavity is constructed inside the sealing sleeve.
  • the liquid-conducting member is a ceramic liquid-conducting member.
  • the atomization structure further includes a shell, and the mist guide shell is accommodated in the shell; a flow passage is formed between the shell and the mist guide shell, and the flow passage The liquid suction surface and the liquid storage chamber are connected.
  • the atomization structure further includes an electromagnetic coil, and the sheet-shaped heating element is configured to generate heat under the action of an alternating magnetic field generated by the electromagnetic coil.
  • the electromagnetic coil is wound around the outer periphery of the mist guide shell; and in the axial direction of the electromagnetic coil, the projection of the sheet heating element intersects the projection of the electromagnetic coil.
  • the projected length of the sheet-shaped heating element is equal to the axial length of the electromagnetic coil.
  • the thickness of the sheet-shaped heating element is equal to 2 to 3 times the skin depth of the sheet-shaped heating element.
  • An atomizer including:
  • an atomization medium carrier having a liquid storage chamber for storing the aerosol-generating matrix
  • the atomization structure is coupled with the atomization medium carrier, and the liquid storage chamber is in fluid communication with the liquid suction surface.
  • An electronic atomization device including:
  • the power component is used to provide electrical energy to the atomizer.
  • Figure 1 is an outline view of an electronic atomization device in an embodiment of the present application
  • Figure 2 is a cross-sectional view of the electronic atomization device shown in Figure 1 at line A-A;
  • Figure 3 is a partial structural diagram of the electronic atomization device shown in Figure 2;
  • Figure 4 is another partial structural schematic diagram of the electronic atomization device shown in Figure 2;
  • Figure 5 is another perspective view of the structure shown in Figure 4.
  • Figure 6 is a cross-sectional view at B-B in the structure shown in Figure 5;
  • Figure 7 is a first perspective view of the structure shown in Figure 4 in an exploded state
  • Figure 8 is a second perspective view of the structure shown in Figure 4 in an exploded state
  • Figure 9 is another partial structural schematic diagram of the electronic atomization device shown in Figure 2;
  • Figure 10 is another perspective view of the structure shown in Figure 9;
  • Figure 11 is a top view of the structure shown in Figure 10;
  • Figure 12 is a cross-sectional view at C-C in Figure 11;
  • Figure 13 is a cross-sectional view at D-D in Figure 11;
  • Figure 14 is a schematic structural diagram of an atomization structure in other embodiments of the present application.
  • Figure 15 is a schematic structural diagram of the electromagnetic coil in the atomization structure shown in Figure 14;
  • FIG. 16 is a half-sectional view of the electromagnetic coil shown in FIG. 15 .
  • 1000 electronic atomization device; 100, atomizer; 10, atomization structure; 11, mist guide shell; 11a, shell body; a1, air flow channel; a2, installation channel; a3, transition channel; 11b, sealing sleeve; b.
  • Accommodation cavity b1, first part; b2, second part; b3, third part; 11c, snap-in part; 12, liquid guide; 12a, atomization surface; c, receiving tank; 12b, liquid suction surface; 12c, protruding column; 12d, base part; 12e, protruding part; 13, sheet heating element; 13a, fog hole; 14, shell; 14a, liquid inlet channel; 14b, flow channel; 14c, air inlet Hole; 14d, engaging part; 14e, head; 14f, cylinder part; 15, electromagnetic coil; 15A, first coil layer; 15B, second coil layer; B1, first coil part; B2, second coil part ; B3, connecting wire; 16, first seal; 17, second seal; 18, shielding film; 20, atomized medium carrier; 21, liquid storage chamber; 22, suction channel; 200, power supply component; 201 , power supply case; 202, microphone; 203, battery; 204, ventilation hole; X, thickness direction; Y, first direction; Z, set axis direction.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they consistent with other embodiments.
  • the embodiments are mutually exclusive independent or alternative embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • multiple refers to two or more (including two), and similarly, “multiple groups” refers to two or more groups (including two groups). “Multiple pieces” refers to two or more pieces (including two pieces).
  • an atomization structure 10 In order to solve the problem mentioned in the background art that slow heating of the heating element causes poor user experience, an atomization structure 10 , an atomizer 100 and an electronic atomization device 1000 are provided that improve the above defects.
  • FIG 1, Figure 2 and Figure 3 is a schematic structural diagram of an electronic atomization device 1000 provided by some embodiments of the present application.
  • the electronic atomizer 1000 includes an atomizer 100 and a power supply assembly 200.
  • the power supply assembly 200 is used to provide electric energy to the atomizer 100.
  • the atomizer 100 can generate heat and atomize the gas stored in the atomizer 100 when it is powered on. Sol generates matrix.
  • the power supply assembly 200 may include a power supply case 201 and a battery 203 contained in the power supply case 201.
  • the power supply assembly 200 supplies power to the atomizer 100 via its own battery 203.
  • the power supply assembly 200 can also supply power to the atomizer 100 by connecting to the mains power.
  • the atomizer 100 is mated with the power supply case 201 to achieve assembly connection with the power supply assembly 200 .
  • the power supply assembly 200 may also include a microphone 202.
  • the microphone 202 is a conventional component in the field and is used to sense air pressure changes to determine whether the gas user needs to use aerosol, that is, whether the user needs to use an electronic atomization device. 1000, and thereby controls the power supply component 200 and the atomizer 100 to be powered on and off. Its specific structure and principle will not be described again here.
  • the power supply assembly 200 is a commonly used component in this field, and its arrangement has various forms, which are not limited here.
  • the atomizer 100 is a device that can atomize an aerosol-generating substrate to form an aerosol when it is powered on.
  • the aerosol-generating substrate is a substance that can be atomized to generate an aerosol.
  • the aerosol-generating substrate includes, but is not limited to, aerosol-generating substrates such as e-liquid and medicinal liquid.
  • the atomizer 100 includes an atomization medium carrier 20 and an atomization structure 10.
  • the atomization medium carrier 20 is matched with the atomization structure 10 (such as snap connection, fastening connection, etc.).
  • the atomized medium carrier 20 may include an independently arranged liquid storage chamber 21 and a suction channel 22.
  • the liquid storage chamber 21 is used to store the aerosol-generating substrate, and the suction channel 22 is used to connect the atomization structure 10 and the outside as an atomization structure. 10
  • the generated aerosol flows to the external channel.
  • the liquid storage chamber 21 can be arranged around the suction channel 22, or can be arranged side by side with the suction channel 22, and the specific form is not limited.
  • the atomization structure 10 is connected with both the liquid storage chamber 21 and the suction channel 22, and is used to obtain the aerosol-generating matrix from the liquid storage chamber 21, and can atomize the aerosol-generating matrix and generate aerosol when power is supplied. It is output to the gas side through the suction channel 22.
  • the atomized medium carrier 20 can be used as a suction nozzle for the user.
  • the suction force is exerted on the user side through the suction chamber, the aerosol-generating matrix in the liquid storage chamber 21 can enter the atomization structure 10 and be atomized.
  • the atomization structure 10 involved in the atomizer 100 in the embodiment of the present application is introduced below.
  • An embodiment of the present application provides an atomization structure 10, which includes a mist guide shell 11, a liquid guide member 12 and a sheet heating element 13.
  • the mist guide shell 11 An air flow channel a1 and a receiving cavity b are formed inside.
  • the liquid guide member 12 is disposed in the accommodation chamber b.
  • the liquid guide member 12 has an atomization surface 12a and a liquid suction surface 12b that are oppositely arranged.
  • the atomization surface 12a is arranged facing the air flow channel a1.
  • the sheet-shaped heating element 13 is contained in the mist guide housing 11 and is arranged on the atomization surface 12a.
  • the liquid guide member 12 refers to a member that can absorb the aerosol-generating matrix and allow the aerosol-generating matrix to diffuse within itself.
  • the liquid-conducting member 12 has micropores inside, and the aerosol-generating matrix can flow between the channels formed by the micropores under the action of capillary force to spread inside the liquid-conducting member 12 .
  • the liquid-conducting member 12 may be high-temperature cotton, ceramic liquid-conducting member, etc.
  • the liquid suction surface 12b of the liquid guide member 12 is located on the flow path of the aerosol-generating matrix from the liquid storage chamber 21 to the accommodation chamber b.
  • the aerosol When the generated matrix passes through the liquid suction surface 12b, all of it diffuses into the liquid guide member 12 via the liquid suction surface 12b.
  • the liquid guide 12 is configured to be sealingly connected to the accommodating cavity b.
  • the aerosol-generating matrix that attempts to enter the accommodating cavity b is all absorbed into the liquid guide 12 through the liquid suction surface 12 b without directly passing through it.
  • the accommodation chamber b enters the air flow channel a1 to prevent the aerosol-generating matrix in the liquid storage chamber 21 from leaking into the air flow channel a1.
  • the sheet heating element 13 is a component that can generate heat when energized. Specifically, it can realize its function of atomizing aerosol and generating a matrix based on resistance heating, infrared heating, and magnetic induction heating.
  • the sheet heating element 13 can be snap-fitted or tightly connected to the liquid guide 12 or the mist guide shell 11, and the specific fixing form is not limited.
  • the sheet-shaped heating element 13 may be located in the air flow channel a1 or in the accommodation cavity b, or may be partially located in the air flow channel a1 and partially in the accommodation cavity b, and is not specifically limited.
  • the liquid guide member 12 may be partially located in the accommodation cavity b and partially extend out of the accommodation cavity b. The part extending out of the accommodation cavity b can extend into the air flow channel a1 or outside the mist guide shell 11 . All the liquid guide members 12 can also be located in the accommodation cavity b. It can be understood that the atomization surface 12a is located in the mist guide shell 11, but it is not limited whether the liquid suction surface 12b is located in the mist guide shell 11. When the sheet-shaped heating element 13 and/or the liquid guide 12 are located in the air flow channel a1, they only occupy part of the space of the air flow channel a1 without hindering the flow of gas.
  • the air flow channel a1 is used to communicate with the suction channel 22
  • the accommodation chamber b is used to communicate with the liquid storage chamber 21 .
  • the aerosol-generating matrix stored in the liquid storage chamber 21 can flow to the accommodating chamber b, and is absorbed by the liquid guide 12 when entering/about to enter the accommodating chamber b.
  • the sheet heating element 13 When the gas side needs to use atomized aerosol, the sheet heating element 13 generates heat and atomizes the aerosol-generating matrix in the liquid guide 12 to form an aerosol.
  • the aerosol enters the suction channel 22 through the air flow channel a1, and is finally Used on the gas side.
  • the sheet-like heating element 13 has a sheet-like structure, and the size of the sheet-like heating element 13 in the thickness direction X is small and in the shape of a thin sheet.
  • the sheet-like heating element 13 has two surfaces oppositely arranged along the thickness direction At least one of the two surfaces of the sheet-shaped heating element 13 can be in the form of a plane, a wavy surface, or other structural forms, and is not limited to being a completely straight plane, and a certain degree of unevenness and undulations are allowed.
  • the sheet-shaped heating element 13 may be a sheet-shaped structure formed by braiding heating wires, or may have an integral structure, and is not specifically limited.
  • the heat W absorbed by the heating element is positively correlated with M* ⁇ T, where M is the mass of the heating element and ⁇ T is the temperature rise per unit time. Under the same power and the same time, if you want to increase ⁇ T, you must either increase M or increase W, which means you need to increase the heating efficiency of the heating element.
  • M ⁇ V ( ⁇ is density, V is volume)
  • the sheet heating element 13 is either taller than the tubular heating element or thicker than the tubular heating element sheet. When the heating element generates heat through magnetic induction, the shorter the height of the heating element, the lower the heating efficiency. The thinner the heating element, the lower the efficiency. Therefore, the heating efficiency of the sheet heating element 13 is higher than that of the tubular heating element.
  • the above-mentioned atomization structure 10 uses a sheet-shaped heating element 13 structure, which has higher heating efficiency than the traditional tubular heating element, helps to increase the heating rate of the atomizing structure 10, and has the effect of rapid atomization and low delay. Can improve user experience.
  • the airflow channel a1 extends along the first direction Y that intersects the thickness direction
  • the first direction Y is perpendicular to the thickness direction X.
  • the first direction Y corresponds to the up and down direction
  • the thickness direction X corresponds to the left and right direction.
  • the aerosol-generating matrix enters the liquid guide 12 from the left and right directions, and then the aerosol formed by atomization flows from the up and down direction to the air user side through the air flow channel a1.
  • the layout of the atomization structure 10 is relatively compact.
  • the axial direction of the air flow channel a1 and the arrangement direction of the liquid guide 12 and the sheet heating element 13 can also be adopted in other ways, which are not limited and repeated here.
  • the liquid-conducting member 12 is a ceramic liquid-conducting member.
  • the ceramic liquid-conducting member may be an alumina ceramic liquid-conducting member, a silicon oxide ceramic liquid-conducting member, an aluminum nitride ceramic liquid-conducting member, a silicon nitride ceramic liquid-conducting member, etc.
  • the porosity of the ceramic liquid-conducting member is 80% or above, which can accelerate the diffusion of the aerosol-generating matrix.
  • Traditional electronic atomization devices 1000 mostly use high-temperature cotton as the liquid-conducting member 12.
  • High-temperature cotton used as the liquid-conducting member 12 is prone to problems of scorching and carbon deposition.
  • the liquid-conducting member 12 is a ceramic liquid-conducting member, and the high melting point of the liquid-conducting member 12 can avoid problems such as scorching and carbon deposition.
  • the atomization surface 12 a is recessed along the thickness direction X away from the sheet heating element 13 to form a receiving groove c, and the sheet heating element 13 is disposed in the receiving groove c.
  • the sheet heating element 13 When the sheet heating element 13 is provided with a receiving groove c, in addition to one surface of the sheet heating element 13 in the thickness direction c. This can increase the contact area between the sheet heating element 13 and the atomization surface 12a, and improve the heating efficiency of the sheet heating element 13.
  • the sheet heating element 13 is configured with a fog hole 13 a , and the fog hole 13 a penetrates both sides of the sheet heating element 13 in the thickness direction X.
  • the fog hole 13a connects the atomization surface 12a and the airflow channel a1.
  • the aerosol formed by atomization on the atomization surface 12a can quickly flow into the airflow channel a1 through the fog hole 13a, which can speed up the release of aerosol.
  • the atomization structure 10 Able to have higher atomization volume.
  • the number of fog holes 13a can be multiple, and the arrangement is flexible and is not specifically limited.
  • a protruding column 12 c is protruding from the atomization surface 12 a, and the protruding column 12 c is provided correspondingly to the mist passage hole 13 a.
  • the protruding pillar 12c and the mist passing hole 13a are arranged correspondingly, which means that the fog passing hole 13a exposes at least part of the protruding pillar 12c.
  • the protruding pillar 12c is inserted into the fog hole 13a.
  • the path of the atomized aerosol exuded from the protruding pillar 12c to the air flow channel a1 is shorter, which helps to improve the atomization efficiency of the aerosol.
  • the protruding pillar 12c and the mist passage hole 13a can be used as a concave-convex matching structure to realize the rapid positioning and assembly of the sheet heating element 13 and the liquid guide member 12.
  • a protruding post 12c is inserted into a fog passage hole 13a.
  • only part of the mist passage hole 13a has a protruding pillar 12c inserted therein.
  • protrusions 12c are inserted into all fog passage holes 13a.
  • no protrusions 12c are inserted into all the fog passage holes 13a.
  • there is a gap between the protruding pillar 12c and the mist passing hole 13a there is a gap between the protruding pillar 12c and the mist passing hole 13a, and this gap is more convenient for the circulation of atomized aerosol.
  • the number of fog holes 13 a is multiple, and the distance between any two adjacent fog holes 13 a is less than the thickness of the sheet heating element 13 .
  • the thickness of the sheet-like heating element 13 refers to the projected length of the sheet-like heating element 13 in the thickness direction X.
  • the spacing distance between two adjacent fog holes 13a refers to the minimum distance between the hole walls of two adjacent fog holes 13a. When the fog holes 13a are circular holes, the distance between two adjacent fog holes 13a is the position between two adjacent quadrant points of the two fog holes 13a.
  • the fog holes 13a will hinder the transmission of current. If the interval between adjacent fog holes 13a is too small, the resistance will be large when the current passes through the heating element between the two fog holes 13a, and the current path will become larger, which is not conducive to Increase the heating rate.
  • all the fog holes 13 a are arranged in one row along the length direction of the sheet heating element 13 .
  • one of the sheet heating element 13 and the liquid guide 12 is configured with a positioning recess, and the other is configured with a positioning protrusion.
  • the positioning recess and the positioning protrusion are positioned and matched along the thickness direction X.
  • the positioning recess can be a positioning groove, a positioning hole, etc.
  • the positioning protrusion can be a positioning post, a positioning protrusion, etc., and the specific form is not limited.
  • the sheet heating element 13 and the liquid guide part 12 can be quickly positioned and assembled, which can speed up the assembly efficiency of the atomization structure 10.
  • the positioning concave portion and the positioning convex portion can increase the contact area between the sheet heating element 13 and the liquid guide 12, thereby improving the atomization efficiency.
  • the mist guide shell 11 includes a shell body 11a and a sealing sleeve 11b.
  • An airflow channel a1 and an installation channel a2 are formed in the shell body 11a.
  • the installation channel a2 penetrates the shell body 11a and Communicated with the air flow channel a1, the sealing sleeve 11b is sealingly coupled to the installation channel a2, and an accommodation cavity b is constructed in the sealing sleeve 11b.
  • the sealing sleeve 11b can be made of plastic and can sealingly connect the liquid guide 12 and the shell body 11a.
  • the sealing sleeve 11b can be made of silicone, rubber, polylauric acid amide, tetrafluoroethylene, polyetheretherketone, polyethylene, polypropylene, polyvinyl fluoride and other materials.
  • the installation channel a2 is provided through the thickness direction X of the sheet heating element 13 .
  • the sealing sleeve 11b not only facilitates the installation of the liquid guide member 12, but also enables the sealing installation of the liquid guide member 12 and the mist guide shell 11 to avoid liquid leakage.
  • the atomization structure 10 also includes a shell 14.
  • the mist guide shell 11 is contained in the shell 14.
  • the space between the shell 14 and the mist guide shell 11 forms a flow passage 14b.
  • the flow channel 14b communicates with the liquid suction surface 12b and the liquid inlet channel 14a.
  • the housing 14 may be, but is not limited to, a plastic component or a ceramic component.
  • the mist guide shell 11 is accommodated in the outer shell 14, and forms a flow passage 14b with the outer shell 14.
  • the aerosol generating matrix in the liquid storage chamber 21 reaches the liquid suction surface 12b through the flow passage 14b, and then diffuses into the liquid guide member 12. .
  • the housing 14 is arranged to guide the aerosol-generating matrix in the liquid storage chamber 21 to the liquid suction surface 12b.
  • the housing 14 has a liquid inlet channel 14a connected to the liquid storage chamber 21 .
  • the aerosol generating matrix in the liquid storage chamber 21 reaches the liquid suction surface 12b through the liquid inlet channel 14a and the overflow channel 14b.
  • the atomization structure 10 can be coupled with the atomization medium carrier 20 through the shell 14, and the coupling method can be snap connection, fastening connection, etc. Further, the atomization structure 10 also includes a first seal 16, which is sealingly connected between the housing 14 and the atomization medium carrier 20, and is used to prevent oil leakage from the liquid storage chamber 21. Further, the atomization structure 10 also includes a second sealing member 17. The second sealing member 17 seals It is connected between the mist guide shell 11 and the outer shell 14 to prevent the atomization structure 10 from leaking (mist) air.
  • fastening connections mentioned in the embodiments of this application include threaded connections, riveting, plug connections, etc.
  • the housing 14 is provided with an air inlet 14c, and the air inlet 14c connects the air flow channel a1 with the atmosphere.
  • the suction channel 22 When the gas user side needs air, the suction channel 22 generates adsorption force, and the outside atmosphere enters the air flow channel a1 through the air inlet hole 14c and takes away the atomized aerosol, so that the gas user side can easily obtain the aerosol.
  • a vent hole 204 is provided at the bottom of the power supply case 201 , and the vent hole 204 communicates with the air inlet hole 14 c and the atmosphere.
  • the air inlet hole 14c may also be configured to directly communicate with the atmosphere.
  • the accommodation cavity b includes a first part b1, a second part b2 and a third part b3 that are sequentially connected along the thickness direction X.
  • the liquid guide 12 It includes a base part 12d and a protruding part 12e connected along the thickness direction Tract 14b.
  • the atomizing surface 12a is formed on the protruding part 12e, and the liquid absorbing surface 12b is formed on the base part 12d and faces the third part b3.
  • the sealing sleeve 11b can be made of soft material to facilitate the installation of the liquid guide member 12 in the accommodation cavity b.
  • a transition channel a3 is also formed in the mist guide shell 11.
  • the transition channel a3 connects the air flow channel a1 and the air inlet 14c.
  • the transition channel a3 faces one end of the air inlet 14c.
  • the flow area is smaller than the flow area of one end of the transition channel a3 facing the air flow channel a1.
  • the end of transition channel a3 facing the air inlet 14c is the distal end, and the end facing the airflow channel a1 is the proximal end.
  • the flow area of the proximal end is smaller than the flow area of the distal end.
  • the flow area of the transition channel a3 decreases from the end facing the air inlet 14c to the end facing the air flow channel a1.
  • the mist guide shell 11 also includes a snap-in part 11c
  • the shell 14 also includes a snap-in part 14d
  • the snap-in part 11c snaps into the snap-in part 14d
  • the engaging portion 11c is an engaging convex portion
  • the engaging portion 14d is an engaging recessed portion mated with the engaging convex portion.
  • the housing 14 includes a connected head 14e and a barrel 14f.
  • the barrel 14f is arranged on one side of the head 14e.
  • the mist guide shell 11 is at least partially accommodated in the barrel 14f.
  • the barrel 14f is connected to the mist guide 14f.
  • a flow passage 11b is formed between the shells 11, and the periphery of the cylinder portion 14f is used to house the electromagnetic coil 15. In the arrangement direction of the head 14e and the cylinder portion 14f, the sum of the projections of the cylinder portion 14f and the electromagnetic coil 15 is located at the head Within the projection range of 14e.
  • the arrangement direction of the head portion 14e and the barrel portion 14f corresponds to the first direction.
  • the electromagnetic coil 15 mentioned below is sleeved on the periphery of the barrel portion 14f.
  • the sum of the projections of the barrel portion 14f and the electromagnetic coil 15 is located within the projection range of the head 14e. That is to say, in the thickness direction The size exceeds the size of the head 14e, thereby contributing to the size of the anti-fog structure 10.
  • liquid inlet channel 14a is provided in the head 14e.
  • the atomization structure 10 further includes an electromagnetic coil 15 , and the sheet heating element 13 is configured to generate heat under the action of the alternating magnetic field generated by the electromagnetic coil 15 .
  • the electromagnetic coil 15 can generate an alternating magnetic field when it is energized.
  • the sheet heating element 13 is a magnetically conductive heating element, which can be a pure iron heating element, a stainless steel heating element, a low carbon steel heating element, etc.
  • the specific material of the sheet heating element 13 is not limited, as long as it can generate heat under an alternating magnetic field. That’s it.
  • the principle by which the magnetically conductive heating element generates heat under an alternating magnetic field is common knowledge in the field and will not be described in detail here.
  • the electromagnetic coil 15 is wound around the outer periphery of the mist guide shell 11, and in the axial direction of the electromagnetic coil 15, the projection of the sheet heating element 13 is in line with the electromagnetic coil. 15 projections intersect.
  • the axial direction of the electromagnetic coil 15 is the direction of the center line of the spiral winding direction of the electromagnetic coil 15 .
  • the electromagnetic coil 15 is in a spiral shape and can generate a wide range of alternating magnetic field in its axial direction, and the portion of the sheet-shaped heating element 13 located in the middle of the alternating magnetic field can generate heat through electromagnetic induction.
  • the electromagnetic coil 15 is set on the outer wall of the housing 14 .
  • the electromagnetic coil 15 is arranged in a spiral shape, and a conventional single-layer spiral tubular coil can be used, or a double-layer spiral tubular coil solution as shown in the following embodiments can be adopted.
  • the electromagnetic coil 15 includes a first coil layer 15A and a second coil layer 15B.
  • the first coil layer 15A is arranged around the set axis Z
  • the second coil layer 15B includes a first coil part B1 and a second coil part B2.
  • the first coil part B1 and the second coil part B2 are both wound outside the first coil layer 15A.
  • the first coil part B1 and the second coil part B2 intervals are provided at both ends of the first coil layer 15A in the set axial direction Z.
  • the first coil layer 15A, the first coil part B1 and the second coil part B2 are all spiral coil structures.
  • the first coil layer 15A is divided into three sections in the set axial direction Z, namely the first section, the second section and the third section.
  • the first coil part B1 is wound around the first section and the third section.
  • the second coil part B2 is wound on the third section.
  • the electromagnetic coil 15 is divided into a first end, a middle and a second end in the set axial direction Z.
  • the first end includes the first coil part B1 and the first section of the first coil layer 15A
  • the second The end portion includes the second coil portion B2 and the third section of the first coil layer 15A
  • the middle portion includes the second section of the first coil layer 15A.
  • Winding density refers to the number of turns of the coil per unit length.
  • the number of coil turns in the first end is determined by the number of coil turns in the first coil part B1 and the number of coil turns in the first section of the first coil layer 15A
  • the number of coil turns in the second end is determined by the number of coil turns in the first coil layer 15A.
  • the number of coil turns is determined by the number of coil turns of the second coil part B2 and the number of coil turns of the third section of the first coil layer 15A.
  • the number of coil turns in the middle part is determined only by the number of coil turns of the second section of the first coil layer 15A. .
  • the first coil part B1 and the second coil part B2 are respectively wound at both ends of the first coil layer 15A, so that the winding density at the two ends of the electromagnetic coil 15 is higher than that in the middle. Linear density. The greater the winding density, the greater the number of coil turns per unit length, and the stronger the magnetic field intensity generated by the electromagnetic coil 15 per unit length.
  • the inventor of the present application conducted in-depth research and found that due to the spiral structural characteristics of the first coil layer 15A, the magnetic field intensity of the second section is higher than the magnetic field intensity of the first and third sections.
  • the first coil part B1 and the second coil part B2 are respectively wound on the segment, and the first coil part B1 and the second coil part B2 are used to increase the winding density of the electromagnetic coil 15 in the first end region and the second end region.
  • the electromagnetic coil 15 can be made to move in the set axial direction.
  • the magnetic field intensity everywhere on Z is relatively balanced, which helps to make the heating power generated everywhere on the heating element 13 more consistent, and helps ensure the consistency of the atomization efficiency of the atomization structure 10 and improve the user's sense of use.
  • the winding density of at least one of the first coil part B1 and the second coil part B2 increases from an end opposite to each other to an end opposite to each other.
  • the first coil part B1 and/or the The winding density of the second coil part B2 is also configured to increase from the side corresponding to the middle part of the electromagnetic coil 15 to the side corresponding to the end part, which can compensate for the changing pattern of the magnetic field intensity of the first coil layer 15A decreasing from the middle part to both ends.
  • the magnetic field intensity everywhere in the first coil layer 15A can be better balanced, so that the magnetic field intensity everywhere in the electromagnetic coil 15 is more uniform and consistent.
  • the winding density of the first coil part B1 and/or the second coil part B2 is evenly arranged in the set axial direction Z.
  • the winding density is equal, that is, the number of coil turns per unit length is equal.
  • the winding density of the first coil part B1 and/or the second coil part B2 is equally arranged in the set axial direction Z, it increases the number of coils of the electromagnetic coil 15 within the unit length of the first end and the second end.
  • the number of turns, thereby increasing the magnetic field strength at both ends of the electromagnetic coil 15, helps to reduce the difference between the magnetic field strength in the middle of the electromagnetic coil 15 and the magnetic field strength at the ends, and improves the consistency of the heating power of the heating element 13. This further improves the consistency of the atomization efficiency of the atomization structure 10 .
  • the winding densities of the first coil part B1 and the second coil part B2 are configured such that their winding densities increase from one end opposite to each other to an end opposite to each other.
  • the winding densities of the first coil part B1 and the second coil part B2 are equally arranged in the set axial direction Z.
  • the winding density of the first coil part B1 increases gradually from one end facing the second coil part B2 to an end away from the second coil part B2.
  • the winding density of the second coil part B2 is set to The fixed axis is evenly arranged in Z direction.
  • the winding densities of the first coil part B1 and the second coil part B2 there may be but are not limited to the above ones, and the specific configuration is not limited to any one, as long as it helps to realize the two ends of the electromagnetic coil 15 It suffices that the magnetic field intensity has good uniformity with the magnetic field intensity in the middle part of the electromagnetic coil 15 .
  • the winding density of the first coil part B1 and/or the second coil part B2 can be gradually increased along the set axis Z when the first coil part B1 and the second coil part B2 are wound. , the distance between adjacent coils gradually decreases.
  • the winding density of the first coil part B1 and/or the second coil part B2 can be equally arranged along the set axis Z when winding the first coil part B1 and the second coil part B2.
  • the spacing between adjacent coils can be designed to be equally spaced.
  • the winding density of the first coil layer 15A is evenly configured.
  • the magnetic field intensity of the first coil layer 15A decreases from the middle to both ends along the set axis Z.
  • by winding the first coil portions respectively in both end regions of the first coil layer 15A B1 and the second coil part B2 help to compensate for the difference in magnetic field intensity between the middle and both ends of the first coil layer 15A, so that the overall magnetic field intensity of the electromagnetic coil 15 is relatively uniform in the set axis Z.
  • the first coil layer 15A When the winding density of the first coil layer 15A is evenly arranged in the set axial direction Z, the first coil layer 15A can be wound according to an ordinary spiral tubular coil. The winding process is mature and can reduce the manufacturing process of the first coil layer 15A. Difficulty.
  • the winding density in the middle of the first coil layer 15A is lower than the winding density at both ends of the first coil layer 15A.
  • the middle part of the first coil layer 15A may correspond to its second section, and both ends of the first coil layer 15A may correspond to its first and second sections.
  • the difference in magnetic field intensity between the middle part of the first coil layer 15A and its two ends can be reduced.
  • the first coil part B1 and the first coil part B1 can be shortened.
  • the winding length of the second coil part B2 reduces the cost of the electromagnetic coil 15 .
  • the arrangement of the winding densities of the first coil layer 15A, the first coil part B1 and the second coil part B2 is not limited, and the winding densities of the three can be set on the axis respectively.
  • the arrangement of the electromagnetic coil 15 can be equally or unequally arranged upward Z, as long as the overall performance of the electromagnetic coil 15 is that the winding density in the middle of the electromagnetic coil 15 is lower than the winding density at both ends of the electromagnetic coil 15, so that the electromagnetic intensity of the electromagnetic coil 15 can be relatively high. Just make it even.
  • the second coil layer 15B further includes a connecting wire B3, and the connecting wire B3 electrically connects the first coil part B1 and the second coil part B2.
  • the connecting wire B3 may be a wire made of a different material from the first coil part B1 and the second coil part B2, or it may be a wire made of the same material as the first coil part B1 and the second coil part B2. In this case, the first coil part B1 and the second coil part B2 are made of the same material.
  • the second coil part B2 may be wound by the same wire.
  • the first coil part B1 and the second coil part B2 are electrically connected by the connecting wire B3, and the two can be connected in series to an external power supply, which helps to simplify the power supply route.
  • the lengths of the first coil part B1 and the second coil part B2 in the set axial direction Z may be equal or different.
  • the length of the first coil part B1 on the first section may be longer than the second coil part on the second section.
  • the length of B2 When the winding density of the first coil layer 15A is uniformly arranged, the lengths of the first coil part B1 and the second coil part B2 may be equal.
  • the first coil layer 15A and the second coil layer 15B are formed by winding the same wire around the set axis Z.
  • the two ends of the first coil layer 15A in the set axial direction Z are respectively the A end and the B end.
  • the two ends of the first coil part B1 in the set axial direction Z are the C end and D end.
  • the two ends of the second coil part B2 in the set axial direction Z are respectively the E end and the F end.
  • the electromagnetic coil 15 is wound by a wire in a winding manner: winding from end A to end B, then pulling the wire to end C, winding from end C to end D, and then pulling the wire from end D to end E, And wind it from end E to end F.
  • the power supply control of the electromagnetic coil 15 is simpler.
  • the atomization structure 10 also includes a shielding film 18 , and the shielding film 18 is sleeved on the outside of the electromagnetic coil 15 .
  • the shielding film 18 can shield the magnetic field, thus preventing the magnetic field from leaking and affecting external things.
  • the projected length of the sheet heating element 13 is equal to the axial length of the electromagnetic coil 15 .
  • the heating efficiency of the portion of the sheet heating element 13 beyond the range of the electromagnetic coil 15 is low, which in turn lowers the temperature rise.
  • the projected length of the sheet heating element 13 is less than the axial length of the electromagnetic coil 15, the part of the electromagnetic coil 15 beyond the sheet heating element 13 cannot act on the sheet heating element 13 to generate heat, and the working efficiency of the electromagnetic coil 15 is low.
  • the projected length of the sheet heating element 13 is equal to the axial length of the electromagnetic coil 15, and the working efficiency of the electromagnetic coil 15 and the sheet heating element 13 can reach a better level.
  • the thickness of the sheet heating element 13 is equal to 2 to 3 times the skin depth of the sheet heating element 13 .
  • the calculation formula of skin depth is:
  • ⁇ is the skin depth
  • ⁇ is the resistivity
  • ⁇ 0 is the vacuum magnetic permeability
  • ⁇ r is the relative conductivity
  • f is the magnetic field frequency
  • the three parameters ⁇ , ⁇ 0 and ⁇ r are based on the materials used in the heating element. All are known values, and their calculation methods are common knowledge in the field and will not be described again here.
  • the thickness of the sheet heating element 13 may be 2 times, 2.5 times, or 3 times its own skin depth.
  • the sheet heating element 13 exceeds 2 to 3 times the skin depth, the sheet heating element 13 is too thick, resulting in slow temperature rise.
  • the thickness of the sheet heating element 13 is less than 2 to 3 times the skin depth, the sheet heating element 13 is too thin, resulting in low heating efficiency and insufficient function during long-term heating.
  • this application also provides an atomizer 100, which includes an atomization medium carrier 20 and the above-mentioned atomization structure 10.
  • the atomization medium carrier 20 has a liquid storage chamber 21 for storing an aerosol-generating substrate.
  • the atomization structure 10 It is coupled with the atomized medium carrier 20, and the liquid storage chamber 21 is in fluid communication with the liquid suction surface 12b.
  • this application also provides an electronic atomization device 1000, which includes an atomizer 100 and a power supply assembly 200.
  • the power supply assembly 200 is used to provide electric energy to the atomizer 100.

Abstract

Structure d'atomisation (10), atomiseur (100) et dispositif d'atomisation électronique (1000). La structure d'atomisation (10) comprend une enveloppe de guidage de vapeur (11), un élément de guidage de liquide (12) et un corps chauffant en forme de feuille (13), un canal d'écoulement d'air (a1) et une cavité de réception (b) étant formés à l'intérieur de l'enveloppe de guidage de vapeur (11) ; l'élément de guidage de liquide (12) est disposé dans la cavité de réception (b) et l'élément de guidage de liquide (12) est pourvu d'une surface d'atomisation (12a) et d'une surface d'absorption de liquide (12b), qui sont disposées à l'opposé l'une de l'autre, la surface d'atomisation (12a) étant disposée face au canal d'écoulement d'air (a1) ; et le corps chauffant en forme de feuille (13) est logé à l'intérieur de la coque de guidage de vapeur (11) et est disposé sur la surface d'atomisation (12a).
PCT/CN2023/113462 2022-09-01 2023-08-17 Structure d'atomisation, atomiseur et dispositif d'atomisation électronique WO2024046134A1 (fr)

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CN115413828A (zh) * 2022-09-01 2022-12-02 深圳麦克韦尔科技有限公司 雾化结构、雾化器及电子雾化装置

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