WO2023207368A1 - Appareil d'atomisation électronique, ensemble de stockage et d'atomisation de liquide associé, et buse - Google Patents

Appareil d'atomisation électronique, ensemble de stockage et d'atomisation de liquide associé, et buse Download PDF

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Publication number
WO2023207368A1
WO2023207368A1 PCT/CN2023/080928 CN2023080928W WO2023207368A1 WO 2023207368 A1 WO2023207368 A1 WO 2023207368A1 CN 2023080928 W CN2023080928 W CN 2023080928W WO 2023207368 A1 WO2023207368 A1 WO 2023207368A1
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WO
WIPO (PCT)
Prior art keywords
liquid
atomization
channel
liquid supply
section
Prior art date
Application number
PCT/CN2023/080928
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English (en)
Chinese (zh)
Inventor
杨豪
刘成川
高椋
林作飘
雷桂林
Original Assignee
海南摩尔兄弟科技有限公司
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Publication of WO2023207368A1 publication Critical patent/WO2023207368A1/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
    • A24F40/10—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
    • 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
    • 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
    • A24F40/51—Arrangement of sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge

Definitions

  • the present invention relates to the field of atomization, and more specifically, to an electronic atomization device and its liquid storage atomization assembly and nozzle.
  • Existing electronic atomization devices mainly use porous media such as porous ceramics or porous cotton combined with heating components for heating and atomization. Due to the high heating temperature during atomization, when the supply of liquid matrix is insufficient, the small amount of liquid matrix on the heating component is not enough to consume the electrical energy released on the heating component, causing the temperature of the heating surface to further increase, thereby further aggravating the thermal cracking of the liquid matrix. , and even the formation of carbon deposits and dry burning can easily cause the formed aerosol to produce a burnt smell, leading to a significant deterioration in taste.
  • the technical problem to be solved by the present invention is to provide an improved liquid storage atomization assembly and nozzle and an electronic atomization device having the liquid storage atomization assembly or nozzle in view of the above-mentioned defects of the prior art.
  • the technical solution adopted by the present invention to solve the technical problem is to construct a liquid storage atomization assembly, which is formed with a liquid storage cavity for storing a liquid substrate, an airflow channel for circulating high-speed airflow, and A resistance liquid supply channel connects the liquid storage chamber and the air flow channel; the high-speed air flow flowing in the air flow channel generates a negative pressure in the air flow channel, and the negative pressure can push the liquid storage cavity The liquid substrate in the air flow channel is sucked out to the air flow channel, and the liquid substrate entering the air flow channel is atomized by the high-speed air flow circulating in the air flow channel;
  • the resistance liquid supply channel includes a liquid supply end section close to the air flow channel, and the liquid supply end section is a capillary channel.
  • the force of the liquid matrix in the final liquid supply section at the gas-liquid interface satisfies ⁇ P MAO ⁇ ⁇ P; where ⁇ P MAO is The capillary force in the final liquid supply section, ⁇ P, is the negative pressure in the liquid storage chamber - the gravity of the liquid matrix in the liquid storage chamber.
  • the liquid supply end section is a linear channel, and the extension direction of the liquid supply end section is perpendicular to the extension direction of the air flow channel.
  • the hydraulic diameter of the final liquid supply section is less than or equal to 0.3 mm.
  • the resistance liquid supply channel further includes a main body section connecting the final liquid supply section and the liquid storage chamber, and the cross-sectional area of the main body section is greater than the cross-sectional area of the final liquid supply section.
  • the cross-sectional area of the main body segment ranges from 0.09 mm2 to 0.16 mm2.
  • the air flow channel includes an air supply channel and an atomization chamber.
  • the atomization chamber is connected to the air supply channel and the liquid supply end section respectively.
  • the atomization chamber is close to the liquid supply end section.
  • One end surface of the air channel forms an atomization surface, and the atomization surface is provided with an atomization port that connects the air supply channel and the atomization chamber.
  • the liquid substrate flowing into the atomization chamber can flow on the atomization surface.
  • a liquid film is formed, which can be cut by the high-speed airflow to form liquid particles.
  • the air supply channel includes an acceleration section, and the cross-sectional area of the acceleration section gradually decreases from an end far away from the atomization chamber to an end close to the atomization chamber.
  • the central axis of the atomization port coincides with the central axis of the atomization chamber.
  • the liquid storage atomization assembly includes a liquid storage shell and a nozzle at least partially housed in the liquid storage shell, the liquid storage chamber is formed in the liquid storage shell, the air flow channel and the The liquid supply end section is formed in the nozzle.
  • the present invention also provides an electronic atomization device, including the liquid storage atomization assembly as described in any one of the above.
  • the present invention also provides a nozzle.
  • An air flow channel and a final liquid supply section are formed in the nozzle.
  • the final liquid supply section is a capillary channel.
  • the final liquid supply section is connected with the air flow channel and is used to supply the liquid to the target.
  • the air flow channel outputs a liquid substrate; the air flow channel is used to circulate high-speed air flow, and the liquid substrate entering the air flow channel from the liquid supply end section can be atomized by the high-speed air flow circulating in the air flow channel.
  • the liquid supply end section is a linear channel, and the extension direction of the liquid supply end section is perpendicular to the extension direction of the air flow channel.
  • the hydraulic diameter of the final liquid supply section is less than or equal to 0.3 mm.
  • a front liquid supply section is also formed in the nozzle.
  • the front liquid supply section is connected with an end of the final liquid supply section away from the air flow channel.
  • the cross-sectional area of the front liquid supply section is larger than the end of the final liquid supply section. The cross-sectional area of the final liquid supply section.
  • the cross-sectional area of the liquid supply front section ranges from 0.09 mm2 to 0.16 mm2.
  • the air flow channel includes an air supply channel and an atomization chamber.
  • the atomization chamber is connected to the air supply channel and the liquid supply end section respectively.
  • the atomization chamber is close to the liquid supply end section.
  • One end surface of the air channel forms an atomization surface, and the atomization surface is provided with an atomization port that connects the air supply channel and the atomization chamber.
  • the liquid substrate flowing into the atomization chamber can flow on the atomization surface.
  • a liquid film is formed, which can be cut by the high-speed airflow to form liquid particles.
  • the air supply channel includes an acceleration section, and the cross-sectional area of the acceleration section gradually decreases from an end far away from the atomization chamber to an end close to the atomization chamber.
  • the central axis of the atomization port coincides with the central axis of the atomization chamber.
  • the present invention also provides an electronic atomization device, including the nozzle as described in any one of the above.
  • the present invention atomizes the continuously flowing liquid matrix into liquid particles through high-speed airflow assistance, thereby enabling low-temperature atomization; in addition, by setting the liquid supply end section as a capillary channel, the liquid supply end section is used to atomize the liquid matrix into liquid particles.
  • the capillary force within the segment is used to reduce the backflow of the liquid matrix into the liquid storage chamber at the end of suction and prevent the delay of liquid supply during the next suction.
  • Figure 1 is a schematic three-dimensional structural diagram of an electronic atomization device in some embodiments of the present invention.
  • Figure 2 is a schematic longitudinal cross-sectional structural diagram of the electronic atomization device shown in Figure 1;
  • Figure 3 is a schematic three-dimensional structural diagram of the liquid storage atomization assembly in Figure 2;
  • Figure 4 shows the stress situation of the liquid matrix in the liquid inlet channel when suction is stopped
  • Figure 5 is a schematic structural diagram of the longitudinal section of the nozzle in Figure 3;
  • Figure 6 is a dimensioned diagram of the nozzle shown in Figure 5;
  • Figure 7 is a schematic structural diagram of a longitudinal section of a nozzle in an alternative version of the present invention.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • connection In the present invention, unless otherwise clearly stated and limited, the terms “installation”, “connection”, “connection”, “fixing” and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrated into one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interactive relationship between two elements, unless otherwise specified restrictions. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • a first feature being “on” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. touch.
  • a first feature being “above” a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature.
  • the first feature being “below” the second feature may mean that the first feature is directly below or diagonally below the second feature, or it may simply mean that the first feature is less horizontally than the second feature.
  • FIGS 1-2 show an electronic atomization device 100 in some embodiments of the present invention.
  • the electronic atomization device 100 can be used to atomize a liquid substrate to generate an aerosol, which can be smoked or inhaled by the user.
  • it may be substantially cylindrical. It is understandable that in other embodiments, the electronic atomization device 100 may also be in other shapes such as an elliptical column, a flat column, a square column, or the like.
  • the liquid substrate may include e-liquid or medicinal liquid.
  • the electronic atomization device 100 may include a housing 10 and a control module 20 , a power supply 30 , an air source 40 and a liquid storage atomization assembly 60 housed in the housing 10 .
  • the control module 20 is electrically connected to the air source 40 for receiving instructions. The instructions can be triggered by the user or automatically triggered after the electronic atomization device 100 meets certain conditions.
  • the control module 20 then controls the operation of the air source 40 according to the instructions.
  • the power supply 30 is electrically connected to the control module 20 and the air source 40 respectively, and is used to provide electric energy to the control module 20 and the air source 40 .
  • the liquid storage atomization assembly 60 includes a liquid storage case 61 and a nozzle 62 at least partially accommodated in the liquid storage case 61 .
  • a liquid storage chamber 610 for storing liquid substrate is formed in the liquid storage shell 61
  • an air flow channel 622 is formed in the nozzle 62
  • a resistance supply connecting the liquid storage cavity 610 and the air flow channel 622 is also formed in the liquid storage atomization assembly 60.
  • Liquid channel 611 so that the liquid matrix in the liquid storage chamber 610 can flow to the air flow channel 622 through the resistance liquid supply channel 611.
  • the air source 40 is connected to the air flow channel 622 and is used to provide high-speed air flow in the air flow channel 622. It can usually be an air pump.
  • the liquid matrix entering the air flow channel 622 from the resistance liquid supply channel 611 can be atomized by the high-speed air flow flowing in the air flow channel 622 to form fine liquid particles.
  • the resistance liquid supply channel 611 includes a liquid supply end section 621 connected with the air flow channel 622 and a main body section 612 connected with the liquid supply end section 621 and the liquid storage chamber 610 .
  • the final liquid supply section 621 can be a capillary channel, that is, the liquid matrix can generate capillary force in the final liquid supply section 621 .
  • the cross-sectional area of the liquid supply end section 621 may be less than 0.08mm2.
  • the negative pressure generated by the high-speed air flow in the resistance liquid supply channel 611 disappears, and the power for the liquid matrix in the resistance liquid supply channel 611 to flow toward the nozzle 62 disappears, while the liquid storage There is a negative pressure in the chamber 610, and the negative pressure in the liquid storage chamber 610 will suck back the liquid matrix in the final liquid supply section 621, causing the liquid supply to be delayed during the next suction.
  • the liquid supply end section 621 of the resistance liquid supply channel 611 close to the air flow channel 622 as a capillary channel, and ensuring that the liquid supply end section 621 has a set of critical dimensions (for example, channel cross-sectional area and channel length), the liquid supply can be utilized
  • the capillary force in the final section 621 reduces backflow to achieve a stable liquid supply that starts and stops, and prevents the liquid substrate from flowing back to the liquid storage chamber 610 when the gas source 40 stops working, causing a delay in liquid supply during the next suction.
  • Figure 4 shows the stress situation of the liquid matrix 200 in the final liquid supply section 621 after the suction is stopped and the air source 40 stops working. After the air source 40 stops working, the power of the liquid substrate in the final liquid supply section 621 to flow toward the nozzle 62 disappears. The force on the liquid substrate 200 in the final liquid supply section 621 on the gas-liquid interface 201 and the movement of the liquid surface The situation is:
  • the liquid level will continue to move toward the liquid storage chamber 610 until enough liquid matrix flows back to the liquid storage chamber 610, so that ⁇ P is reduced to balance with ⁇ P gross due to the rise of the liquid level in the liquid storage chamber 610.
  • the liquid level movement will stop, and a relatively large cavity will be formed in the resistance liquid supply channel 611 at this time, resulting in a long delay when the air source 40 is started next time;
  • ⁇ P negative pressure in the liquid storage chamber 610 - gravity of the liquid matrix in the liquid storage chamber 610
  • ⁇ P capillary force in the final liquid supply section 621.
  • the cross-sectional area of the final liquid supply section 621 is 0.07mm2 (or aperture 0.3mm), and the channel length is ⁇ 2mm.
  • the cross-sectional area of the liquid supply end section 621 can be 0.05mm2, and the channel length is ⁇ 1mm, which can also achieve stable liquid supply that starts and stops.
  • the hydraulic diameter of the liquid supply end section 621 is less than or equal to 0.3 mm, and stable liquid supply that starts and stops can also be achieved.
  • the resistance liquid supply channel 611 can also be used to control the flow rate of liquid supplied to the air flow channel 622 to achieve quantitative liquid supply to the air flow channel 622 .
  • the size of the designed resistance liquid supply channel 611 can be matched according to the flow demand, that is, the resistance liquid supply channel 611 can generate resistance that matches the liquid supply power under the design flow rate.
  • the negative pressure generated in the air flow channel 622 is the liquid supply power
  • the liquid supply resistance includes the resistance along the liquid supply channel 611 and the negative pressure in the liquid storage chamber 610 .
  • the greater the viscosity of the liquid matrix the greater the resistance of the liquid matrix when flowing in the resistance liquid supply channel 611; the longer the length of the resistance liquid supply channel 611, the greater the resistance in the resistance liquid supply channel 611. ;
  • the viscosity of the liquid matrix is 20cp ⁇ 250cp; the overall length of the resistance liquid supply channel 611 is 6mm ⁇ 15mm.
  • the final liquid supply section 621 and the main body section 612 are both linear channels extending laterally, and the central axes of the final liquid supply section 621 and the main body section 612 coincide with each other.
  • the main body section 612 is a weak capillary force channel, that is, the liquid matrix can generate weak capillary force in the main body section 612 .
  • the cross-sectional area of the main body section 612 is larger than the cross-sectional area of the final liquid supply section 621. In some embodiments, the cross-sectional area of the main body section 612 can range from 0.09 mm2 to 0.16 mm2.
  • the final liquid supply section 621 is formed in the nozzle 62
  • the main section 612 is formed in the liquid storage shell 61 .
  • the nozzle 62 generally has a cylindrical shape, which can be longitudinally inserted into the liquid storage case 61 and can be disposed coaxially with the liquid storage case 61 .
  • the airflow channel 622 runs through the nozzle 62 longitudinally and may be coaxially disposed with the nozzle 62 .
  • the liquid supply end section 621 extends laterally inward from one side of the nozzle 62 to communicate with the air flow channel 622 , and the extension direction of the liquid supply end section 621 is perpendicular to the extension direction of the air flow channel 622 .
  • the shape of the nozzle 62 may also be in other shapes such as an ellipse or a square.
  • the liquid supply end section 621 can also be partially formed in the nozzle 62 and partially formed in the liquid storage shell 61; or, the main body section 612 can also be partially formed in the nozzle 62 and partially formed in the liquid storage shell. inside the shell 61.
  • the air flow channel 622 may include an air supply channel 623 and an atomization chamber 625.
  • the atomization chamber 625 is connected to the air source 40 through the air supply channel 623, and is connected to the liquid storage chamber 610 through the final liquid supply section 621.
  • An atomization surface 6250 is formed on an end surface of the atomization chamber 625 close to the air supply channel 623, and an atomization port 6251 is also formed on the atomization surface 6250.
  • the high-speed airflow from the air supply channel 623 is sprayed into the atomization chamber 625 through the atomization port 6251 and flows at high speed in the atomization chamber 625.
  • the high-speed airflow generates a negative pressure in the final liquid supply section 621 according to Bernoulli's equation.
  • the negative pressure is transmitted to the liquid storage chamber 610 to suck the liquid matrix in the liquid storage chamber 610 to the atomization chamber 625, and a liquid film is formed on the atomization surface 6250.
  • the liquid film moves to the edge of the hole wall of the atomization port 6251 and meets the high-speed airflow, and is cut and atomized by the high-speed airflow into fine liquid particles.
  • the liquid particles are then taken away from the atomization port 6251 by the airflow. Then it is sprayed out with the airflow to complete the atomization process.
  • the liquid matrix is atomized in the atomization chamber 625 in a non-phase change atomization mode.
  • SMD total volume of liquid particles/total surface area of liquid particles, which represents the average particle size of liquid particles.
  • the atomization chamber 625 is a straight cylindrical channel, and its hole wall is perpendicular to the atomization surface 6250.
  • the atomization chamber 625 is a right cylindrical channel
  • the atomization surface 6250 is in the shape of concentric rings
  • the inner wall surface of the atomization surface 6250 defines the atomization port 6251.
  • the cross-section of the atomization chamber 625, the atomization surface 6250, or the atomization port 6251 may also be an ellipse, a rectangle, or other non-circular shapes.
  • Parameters such as the size and shape of the atomization port 6251 and the atomization chamber 625 can affect the negative pressure in the atomization chamber 625 and the particle size of the generated liquid particles, and can make the flow rate more stable.
  • the aperture D of the atomization port 6251, the aperture W1 of the atomization chamber 625, and the length H of the atomization chamber 625 can be set to appropriate sizes as needed.
  • the aperture D of the atomization port 6251 is related to the airflow speed (m/s) coming out of the atomization port 6251, which can affect the particle size of the generated liquid particles.
  • the aperture D of the atomization port 6251 may range from 0.2mm to 0.4mm, preferably from 0.22mm to 0.35mm.
  • the aperture W1 of the atomization chamber 625 will affect the airflow velocity in the atomization chamber 625, thereby affecting the negative pressure in the atomization chamber 625 and the final liquid supply section 621. This negative pressure can cause the liquid substrate to be sucked from the final liquid supply section 621 to the atomization chamber 625 .
  • the aperture W1 of the atomization chamber 625 may range from 0.7 mm to 1.3 mm.
  • the length H of the atomization chamber 625 may be 0.8mm ⁇ 3.0mm.
  • the atomization port 6251 or the atomization chamber 625 may also have a non-circular cross-section; when the atomization port 6251 or the atomization chamber 625 has a non-circular cross-section, the aperture of the atomization port 6251 D or the aperture W1 of the atomization chamber 625 is its equivalent diameter respectively.
  • equivalent diameter means that the diameter of a circular hole with the same hydraulic radius is defined as the equivalent diameter of a non-circular hole.
  • the range of D is 0.22mm ⁇ 0.35mm
  • the range of H is 1.5mm ⁇ 3.0mm
  • the range of W1 is 0.7mm ⁇ 1.3mm.
  • the value ranges of D, H, and W1 can be This gives the nozzle 62 advantages in the manufacturing process.
  • the end of the liquid supply end section 621 that communicates with the atomization chamber 625 has a liquid supply port 6210.
  • the distance L between the liquid supply port 6210 and the atomization surface 6250 is the key to ensuring the formation of a liquid film.
  • the distance L between the liquid supply port 6210 and the atomization surface 6250 is the vertical distance between the center of the liquid supply port 6210 and the atomization surface 6250.
  • the distance L between the liquid supply port 6210 and the atomization surface 6250 may range from 0.3 mm to 0.8 mm.
  • L is 0.35 mm to 0.6 mm.
  • the air flow channel 622 also includes an expansion channel 626, which is connected to an end of the atomization chamber 625 away from the air supply channel 623, and is used to diffuse the liquid particles generated after atomization in the atomization chamber 625 in the form of a jet. Spray out to increase the spray area of liquid particles.
  • the expansion channel 626 is a conical channel that extends longitudinally and has a hole diameter that gradually increases from bottom to top.
  • the atomization angle ⁇ of the expansion channel 626 (that is, the expansion angle of the expansion channel 626) must have a suitable range to ensure that the ejected liquid particles have a suitable injection range.
  • the atomization angle ⁇ of the expansion channel 626 may be 30 0 ⁇ 70 0 .
  • the expansion channel 626 may also be in an elliptical cone shape, a pyramid shape, or other shapes.
  • the air supply channel 623 may include an acceleration section 6231, which has a constricted shape, and its cross-sectional area gradually decreases from an end far away from the atomization chamber 625 to an end close to the atomization chamber 625, so that the air supply channel 623 can be The air flow from the air source 40 is accelerated and then sprayed to the atomization chamber 625 .
  • the accelerating section 6231 is a conical channel extending longitudinally and the aperture gradually decreases from bottom to top.
  • the aperture of the upper end of the accelerating section 6231 is smaller than the aperture of the atomization chamber 625, so that the aperture of the accelerating section 6231 and the atomization chamber 625
  • the junction forms a circular atomization surface 6250. It is understood that in other embodiments, the accelerating section 6231 may also be an elliptical cone shape or a pyramid shape or other contracted shapes.
  • the air supply channel 623 also includes a communication section 6232 that communicates with the acceleration section 6231.
  • the acceleration section 6231 is connected to the air source 40 through the communication section 6232.
  • the communication section 6232 may be a straight cylindrical channel extending longitudinally. The upper end of the communication section 6232 is connected with the accelerating section 6231, and the aperture of the communication section 6232 is consistent with the aperture of the lower end of the accelerating section 6231.
  • the cross-section of the communication section 6232 may also be an ellipse, a rectangle, or other non-circular shapes. It can be understood that in other embodiments, the air supply channel 623 formed in the nozzle 62 may also include only the acceleration section 6231; or, when the air flow rate is sufficient, the air supply channel 623 may also only include the communication section 6232.
  • the liquid storage shell 61 may include a liquid storage body 613 and a liquid storage base 614 that cooperate with each other.
  • the liquid storage chamber 610 and the main body section 612 are both formed in the liquid storage main body 613 .
  • the bottom surface of the liquid storage body 613 is concave to form an annular liquid storage cavity 610
  • the side wall of the liquid storage cavity 610 close to the nozzle 62 extends transversely toward the nozzle 62 to form a main body section 612 .
  • the liquid storage chamber 610 and/or the main body section 612 can also be formed in the liquid storage seat 614, or can also be partially formed in the liquid storage main body 613 and partially in the liquid storage seat 614. .
  • a liquid injection channel 615 connected to the liquid storage chamber 610 may be formed on the liquid storage shell 61 so that liquid can be injected into the liquid storage chamber 610 again after the liquid matrix in the liquid storage chamber 610 is used up.
  • the liquid injection channel 615 is formed in the liquid storage body 613 and extends longitudinally, and the lower end of the liquid injection channel 615 is connected with the liquid storage chamber 610 .
  • the electronic atomization device 100 further includes a heating element 80 contained in the housing 10 .
  • the heating element 80 is electrically connected to the power supply 30 and can generate heat after being powered on.
  • the structure and heating form of the heating element 80 are not limited. For example, it can be a heating net, a heating sheet, a heating wire or a heating film.
  • the heating form can be resistance conduction heating, infrared radiation heating, electromagnetic induction heating or composite heating. Heated form.
  • An output channel 70 is also formed in the housing 10 , and the heating element 80 can be disposed in the output channel 70 and located above the nozzle 62 .
  • the liquid particles ejected from the nozzle 62 upwardly impact the heating element 80 and are heated by the heating element 80 to generate an aerosol.
  • the aerosol is then carried out of the output channel 70 by the air flow for the user to suck or inhale.
  • the nozzle 62 is used to atomize the continuously flowing liquid matrix into liquid particles and then evaporated by the heating element 80. Since the surface area of the fine liquid particles formed after atomization by the nozzle 62 is greatly expanded, it is easier to Heating and evaporation can, on the one hand, improve the conversion efficiency of heat and aerosol, and on the other hand, reduce the temperature of the evaporation process of the heating element 80 to achieve low-temperature atomization.
  • the liquid matrix mainly completes the physical change process, thus overcoming the problem of thermal cracking and deterioration of the liquid matrix caused by the necessity of high-temperature atomization under traditional porous ceramics or porous cotton conditions, not to mention the Burning, carbon deposition, heavy metal volatilization and other phenomena will occur, so that the unique ingredients and flavor and fragrance systems of different liquid bases can be maintained, and ultimately the inhaler can feel the unique taste corresponding to the original liquid base.
  • the heating element 80 is not in contact with the liquid storage chamber 610, and the heating element 80 does not need to be immersed in the liquid matrix for a long time, which reduces the contamination of the liquid matrix by the heating element 80, thereby reducing impurity gases in the aerosol generated after atomization.
  • the liquid particles ejected from the nozzle 62 can also hit the heating element 80 downward, that is, the heating element 80 can also be disposed below the nozzle 62; or, the liquid ejected from the nozzle 62 The particles may also impact the heating element 80 laterally, that is, the heating element 80 and the nozzle 62 are at or approximately at the same level.
  • the electronic atomization device 100 may not be provided with the heating element 80 , that is, the liquid particles atomized by the nozzle 62 may be directly output through the output channel 70 and sucked or inhaled by the user.
  • the housing 10 may also be provided with a bracket assembly 11, which divides the housing 10 into a first receiving space 121 located at the upper part and a second receiving space 122 located at the lower part.
  • the control module 20 , the power supply 30 , and the air source 40 can all be accommodated in the second accommodation space 122 .
  • the liquid storage atomization assembly 60 can be received in the first receiving space 121 and supported on the bracket assembly 11 .
  • the electronic atomization device 100 may further include an airflow sensing element 50 disposed in the housing 10 and electrically connected to the control module 20 .
  • the airflow sensing element 50 can be accommodated at the bottom of the bracket assembly 11 and can sense changes in the airflow when the user inhales. It can usually be a negative pressure sensor, such as a microphone. The user's suction action creates negative pressure, and the airflow sensing element 50 senses the negative pressure to generate a suction signal.
  • the suction signal can be transmitted to the control module 20 to control the operation of the air source 40 and/
  • the electronic atomization device 100 may further include a dust cover 90 detachably disposed on the upper end of the housing 10 .
  • the dust cover 90 can be placed on the upper end of the housing 10 to prevent dust and other impurities from entering the output channel 70 .
  • FIG. 7 shows a nozzle 62 in an alternative version of the present invention.
  • a liquid supply end section 621 and a liquid supply front section 624 are formed in the nozzle 62.
  • the end section 621 is connected to the atomization chamber 625
  • the liquid supply front section 624 is connected to an end of the liquid supply end section 621 away from the atomization chamber 625 .
  • the structure of the final liquid supply section 621 is similar to the relevant description in the above embodiment, and will not be described again here.
  • the liquid supply front section 624 is a weak capillary force channel, which forms a part of the main body section 612 in the above embodiment.
  • the wall surface of the hole of the expansion channel 626 is an arc surface, and the expansion channel 626 and the atomization chamber 625 are connected smoothly in a streamlined manner, for example, they are tangent by rounding.
  • the arc surface can be realized through processes such as rounding.
  • the rounding method can also increase the atomization angle of the expansion channel 626, for example, the atomization angle can be increased from 40 0 to 50 0 . It can be understood that in other embodiments, the hole wall surface of the expansion channel 626 may also have other streamlined expansion shapes.

Landscapes

  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

L'invention concerne un appareil d'atomisation électronique (100), un ensemble de stockage et d'atomisation de liquide (60) associé, et une buse (62). Une cavité de stockage de liquide (610) utilisée pour stocker une matrice liquide, un canal d'écoulement d'air (622) utilisé pour faire circuler un écoulement d'air à grande vitesse, et un canal d'alimentation en liquide résistif (611) utilisé pour mettre la cavité de stockage de liquide (610) en communication avec le canal d'écoulement d'air (622) sont formés à l'intérieur de l'ensemble de stockage et d'atomisation de liquide (60). L'écoulement d'air à grande vitesse s'écoulant dans le canal d'écoulement d'air (622) entraîne la génération d'une pression négative dans le canal d'écoulement d'air (622), la pression négative pouvant aspirer la matrice liquide dans la cavité de stockage de liquide (610) dans le canal d'écoulement d'air (622), et la matrice liquide entrant dans le canal d'écoulement d'air (622) étant atomisée par l'écoulement d'air à grande vitesse s'écoulant dans le canal d'écoulement d'air (622). Le canal d'alimentation en liquide résistif (611) comprend une section arrière d'alimentation en liquide (621) proche du canal d'écoulement d'air (622), la section arrière d'alimentation en liquide (621) étant un canal capillaire. La matrice liquide à écoulement continu est atomisée en particules liquides à l'aide de l'écoulement d'air à grande vitesse, de telle sorte qu'une atomisation à basse température puisse être obtenue. De plus, la force capillaire dans la section arrière d'alimentation en liquide (621) peut réduire le reflux de la matrice liquide vers la cavité de stockage de liquide (610) lorsque l'aspiration s'achève, empêchant ainsi un retard dans l'alimentation en liquide pendant l'aspiration suivante.
PCT/CN2023/080928 2022-04-29 2023-03-10 Appareil d'atomisation électronique, ensemble de stockage et d'atomisation de liquide associé, et buse WO2023207368A1 (fr)

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CN202210468920.0 2022-04-29

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