WO2023092337A1 - Atomiseur et dispositif d'atomisation électronique - Google Patents

Atomiseur et dispositif d'atomisation électronique Download PDF

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Publication number
WO2023092337A1
WO2023092337A1 PCT/CN2021/132826 CN2021132826W WO2023092337A1 WO 2023092337 A1 WO2023092337 A1 WO 2023092337A1 CN 2021132826 W CN2021132826 W CN 2021132826W WO 2023092337 A1 WO2023092337 A1 WO 2023092337A1
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WO
WIPO (PCT)
Prior art keywords
air outlet
outlet channel
air
aerosol
atomizer
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PCT/CN2021/132826
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English (en)
Chinese (zh)
Inventor
曹润
谢亚军
罗帅
罗智
雷桂林
Original Assignee
深圳麦克韦尔科技有限公司
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Application filed by 深圳麦克韦尔科技有限公司 filed Critical 深圳麦克韦尔科技有限公司
Priority to PCT/CN2021/132826 priority Critical patent/WO2023092337A1/fr
Publication of WO2023092337A1 publication Critical patent/WO2023092337A1/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

Definitions

  • the present application relates to the technical field of electronic atomization devices, in particular to an atomizer and an electronic atomization device.
  • An electronic atomization device is a device that can atomize an aerosol-generating substrate into an aerosol, and is widely used in daily life.
  • the atomizing core in the electronic atomization device has an atomizing surface, and a heating layer is arranged on the atomizing surface. After the heating layer is energized, it can heat the aerosol generating substrate near the atomizing surface, so that the aerosol generating substrate is heated and atomized An aerosol is generated, and the aerosol flows out of the electronic atomization device through the air outlet for use by the user.
  • the atomizing surface of the atomizing core is set downward, that is, it is set towards the air inlet of the electronic atomizing device.
  • the atomizing surface of the atomizing core can also be set up, that is, facing the air outlet, so that the distance between the air outlet and the atomizing surface can be greatly shortened, and the flow of electrons can be improved.
  • the amount of aerosol in the nebulizer is set upward.
  • setting the atomizing side upward will increase the temperature of the aerosol flowing out from the air outlet, and the user experience will be deteriorated.
  • the atomizer and the electronic atomization device provided in the embodiments of the present application solve the problems of high temperature of the aerosol flowing out of the air outlet and poor user experience when the atomization surface is set upward.
  • the first technical solution provided by this application is: provide an atomizer, including a housing, a mounting base and an atomizing core; the housing has an air outlet channel; the mounting base has a An atomization chamber; the atomization core is arranged in the atomization chamber; the atomization core has an atomization surface, the atomization surface faces the air outlet of the mounting seat, and the air outlet channel is connected to the The air outlet hole of the mounting seat; wherein, the mounting seat is provided with an air inlet hole, and the air inlet hole is used to communicate with the external atmosphere and the atomization chamber, so that the external air can pass through the air inlet Stomata flow into the atomization cavity; a certain distance h is set between the atomization surface and the air inlet hole, and a cooling structure is provided in the air outlet channel, so that the temperature range of the aerosol at the air outlet is between 55°C-85°C.
  • the cooling structure makes the air outlet channel split into multiple sub-air outlet channels at the end away from the atomizing core and then converge together.
  • the cooling structure includes a partition arranged in the air outlet channel, so as to divide the end of the air outlet channel away from the atomizing core into two sub-air outlet channels; the extending direction of the partition is the same as that of the The extending directions of the air outlet passages are the same; the end surface of the partition near the end of the air outlet is spaced apart from the air outlet.
  • the range of the distance d between the end surface of the partition near the end of the air outlet and the air outlet is 0mm ⁇ d ⁇ 3mm.
  • the size of the end of the air outlet channel away from the atomizing core in the width direction of the atomizer becomes larger to form a widened section, and the partition is arranged on the widened section and divides the air outlet channel into Two said sub air outlet channels.
  • the two sub air outlet passages are arranged symmetrically along the partition.
  • the ratio of the length of the separator to the length of the air outlet channel is 1:5-1:4.
  • the range of h is 0mm ⁇ h ⁇ 0.7mm.
  • the range of h is 0.2mm ⁇ h ⁇ 0.5mm.
  • the installation seat is arranged in the installation cavity; the installation seat has a top wall and a side wall connected to each other, and the top wall and the side wall surround The atomization chamber is formed; the side wall of the installation seat cooperates with the side wall of the installation chamber to form an air guide channel; the side of the atomization core close to the top wall has an atomization surface; wherein, the The side wall of the installation seat is provided with the air inlet hole, so that the air guide channel communicates with the atomization chamber.
  • the mounting base includes a mounting top cover and a mounting base; the mounting top cover is sleeved on the mounting base; the outer surface of the side wall of the mounting top cover is provided with an air guide groove, and the The side wall cooperates with the bottom wall of the air guide groove to form the air guide channel, and the side of the air guide groove near the top wall of the installation top cover is provided with the air inlet hole; the installation base has an inlet An air port, the end of the air guide channel away from the air inlet hole communicates with the air inlet.
  • the cooling structure is arranged in the outlet channel, wherein the cooling structure is configured to reduce the temperature of the aerosol flowing through the outlet channel.
  • the cooling structure is a protrusion arranged on the inner wall surface of the air outlet channel.
  • the height of the protrusions is 0.3 mm-0.6 mm; and/or, the ratio of the distance between the centers of adjacent protrusions to the height of the protrusions is 7-20.
  • the length of the air outlet channel is less than or equal to 20mm, and the height of the protrusion is 0.6mm-0.7mm;
  • the length of the air outlet channel is greater than 20mm and less than or equal to 30mm, and the height of the protrusion is 0.5mm-0.6mm;
  • the length of the air outlet channel is greater than 30mm and less than or equal to 40mm, and the height of the protrusion is 0.4mm-0.5mm;
  • the length of the air outlet channel is greater than 40mm and less than or equal to 50mm, and the height of the protrusion is 0.35mm-0.45mm;
  • the length of the air outlet channel is greater than 50mm, and the height of the protrusion is 0.3mm-0.4mm.
  • the cross section of the protrusions is a square, and the ratio of the distance between the centers of adjacent protrusions to the height of the protrusions is 10-20;
  • the cross section of the protrusions is circular, and the ratio of the distance between the centers of adjacent protrusions to the height of the protrusions is 7-20.
  • the second technical solution provided by this application is: provide an electronic atomization device, including a battery assembly and an atomizer, the battery assembly is used to power the atomizer, wherein the atomizer is the above-mentioned The nebulizer described in any one.
  • the atomizer includes a housing, a mounting base and an atomizing core; the housing has an air outlet channel, and the mounting base has an atomizing chamber inside; the atomizing core is arranged In the chemical chamber; the atomizing core has an atomizing surface, the atomizing surface faces the air outlet of the mounting seat, and the air outlet channel is connected to the air outlet of the mounting seat; wherein, the mounting seat is provided with an air inlet, and the air inlet is used to communicate with the outside world
  • the atmosphere and the atomization chamber are connected so that the outside atmosphere can flow into the atomization chamber through the air inlet; a certain distance h is set between the atomization surface and the air inlet, and a cooling structure is set in the air outlet channel so that the air outlet
  • the temperature range of the aerosol is 55°C-85°C. Compared with the existing atomizer, the temperature of the aerosol at the air outlet is significantly lower, which improves the user experience.
  • Fig. 1 is a block diagram of a functional module of the electronic atomization device provided by the present application
  • Fig. 2 is a schematic diagram of a three-dimensional structure of the first embodiment of the atomizer provided by the present application;
  • Fig. 3 is a schematic diagram of the explosion structure of the atomizer in Fig. 2;
  • Fig. 4 is a cross-sectional view of the atomizer in Fig. 2 along the direction A-A;
  • Fig. 5 is a three-dimensional structural schematic diagram of an angle of installing the top cover in Fig. 3;
  • Fig. 6 is a three-dimensional structural schematic diagram of another angle of installing the top cover in Fig. 3;
  • Fig. 7 is a schematic diagram of a three-dimensional structure of the atomization core in Fig. 3;
  • Fig. 8 is a cross-sectional view of the assembly seat and atomizing core in Fig. 3;
  • Fig. 9 is a partial sectional view of the atomizer in Fig. 2 along the B-B direction;
  • Fig. 10 is another cross-sectional view of the assembled seat and atomizing core in Fig. 3;
  • Fig. 11 is a local flow velocity diagram of the gas in the atomizer of Fig. 2;
  • Figure 12 is a diagram of the local temperature distribution in the atomizer of Figure 2;
  • Fig. 13 is the curve diagram of the temperature of the aerosol of spacing-air outlet provided by the present application.
  • Fig. 14 is the curve diagram of the aerosol amount of the spacing-air outlet provided by the present application.
  • Fig. 15 is a histogram of spacing-aerosol amount and temperature at the air outlet provided by the present application.
  • Fig. 16 is a schematic diagram of an exploded structure of installing the top cover, the atomizing core, the second seal, the third seal and the installation base in Fig. 3;
  • Fig. 17 is a schematic diagram of the exploded structure of the mounting seat and the end cover in Fig. 3;
  • Fig. 18 is a schematic diagram of another explosion structure in which the top cover, the atomizing core, the second seal, the third seal and the installation base are installed in Fig. 3;
  • Fig. 19 is a partial structural schematic diagram of the second embodiment of the atomizer provided by the present application.
  • Fig. 20 is the structural representation of the first experimental piece
  • Fig. 21 is the structural representation of the second experimental piece
  • Fig. 22 is the airflow temperature distribution diagram at the outlet of the first experimental piece
  • Fig. 23 is the air flow temperature distribution diagram at the outlet of the second experimental piece
  • Figure 24 is a schematic diagram of the change law of the local surface heat transfer coefficient corresponding to different boundary layer forms
  • Fig. 25 is a schematic diagram of the flow path of the airflow in the outlet channel of Fig. 19;
  • Fig. 26 is a distribution diagram of the velocity field in the outlet channel of the existing atomizer
  • Fig. 27 is a distribution diagram of the velocity field in the air outlet channel in the second embodiment of the atomizer provided by the present application.
  • Fig. 28 is a schematic diagram of the structure in which the raised section in Fig. 19 is a square;
  • Fig. 29 is a structural schematic diagram of a protrusion with a circular cross-section in another embodiment
  • Fig. 30 is a chart showing the variation law of the suction resistance with the height of the protrusion calculated for different outlet channel lengths
  • Figure 31 is a temperature distribution diagram of the air outlet corresponding to different protrusion heights
  • Fig. 32 is a schematic diagram for calculation of a flow field with a raised cross-section being a square
  • Fig. 33 is a graph showing the variation law of the heat transfer coefficient of different heights of square cross-section bulges
  • Fig. 34 is the distribution diagram of the velocity field corresponding to different P/H values of the bulge in the positive direction section;
  • Fig. 35 is a graph showing the change law of the heat transfer coefficient with different P/H values of the cross-sectional protrusions in the positive direction;
  • Fig. 36 is a schematic diagram for calculation of a flow field with a convex cross-section being circular;
  • Fig. 37 is a graph showing the variation law of heat transfer coefficients of different heights of circular cross-section bulges
  • Fig. 38 is a distribution diagram of the velocity field corresponding to different P/H values of circular cross-section bulges
  • Fig. 39 is a graph showing the variation law of the heat transfer coefficient with different P/H values of circular cross-section protrusions
  • Fig. 40 is a partial structural schematic diagram of the third embodiment of the atomizer provided by the present application.
  • Fig. 41 is a schematic diagram of a partial structure of an existing atomizer
  • Fig. 42 is a cloud diagram of the aerosol temperature distribution at the air outlet of the atomizer provided in Fig. 41;
  • Figure 43 is a cloud diagram of the aerosol temperature distribution at the air outlet of the atomizer provided in Figure 40;
  • Figure 44 is a flow velocity vector distribution diagram on several surfaces of the air outlet channel of the atomizer provided in Figure 40 near the air outlet;
  • Figure 45 is a graph of the relationship between the maximum temperature of the aerosol at the air outlet and the separation distance d;
  • Fig. 46 is a graph showing the relationship between the aerosol temperature at the center position A of the air outlet and the separation distance d.
  • first”, “second”, and “third” in this application are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, features defined as “first”, “second” and “third” may explicitly or implicitly include at least one of said features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back%) in the embodiments of the present application are only used to explain the relative positional relationship between the various components in a certain posture (as shown in the drawings) , sports conditions, etc., if the specific posture changes, the directional indication also changes accordingly.
  • FIG. 1 is a schematic diagram of a functional module of the electronic atomization device provided in this application.
  • an electronic atomization device is provided.
  • the electronic atomization device can be used for atomization of aerosol-generating substrates.
  • the electronic atomization device includes an atomizer 11 and a battery assembly 12 electrically connected to each other.
  • the atomizer 11 is used for storing the aerosol-generating substrate and atomizing the aerosol-generating substrate to form an aerosol that can be inhaled by the user.
  • the atomizer 11 can be used in different fields, such as medical treatment, beauty care, leisure smoking, etc.; in a specific embodiment, the atomizer 11 can be used in an electronic aerosolization device for atomizing the substrate to be atomized And generate aerosol, for the sucker to inhale, the following embodiments are all taken as an example; of course, in other embodiments, the atomizer 11 can also be applied to hairspray equipment, to be used for hair styling by atomization hairspray; or equipment for the treatment of upper and lower respiratory diseases to aerosolize medical drugs.
  • the battery pack 12 includes a battery (not shown) and a controller (not shown).
  • the battery is used to supply power to the atomizer 11, so that the atomizer 11 can atomize the aerosol generating substrate to form an aerosol; the controller is used to control the operation of the atomizer 11.
  • the battery assembly 12 also includes other components such as a battery holder airflow sensor.
  • the atomizer 11 and the battery assembly 12 can be integrated or detachably connected, and can be designed according to specific needs.
  • Fig. 2 is a schematic three-dimensional structural diagram of the first embodiment of the atomizer provided in this embodiment
  • Fig. 3 is a schematic diagram of the exploded structure of the atomizer in Fig. 2
  • Fig. 4 is The sectional view of the atomizer along the A-A direction in Fig. 2 .
  • an atomizer 11 is provided, and the atomizer 11 includes a housing 111 , a mounting base 112 , an atomizing core 113 and an end cap 114 .
  • a liquid storage cavity 1111 , an air outlet channel 1112 and an installation cavity 1113 are formed in the housing 111 , and the liquid storage cavity 1111 and the air outlet channel 1112 communicate with the installation cavity 1113 respectively.
  • the liquid storage chamber 1111 is used to store the aerosol-generating substrate, and the housing 111 can be made of metal such as aluminum, stainless steel, or plastic, as long as it can store the aerosol-generating substrate and does not react with the aerosol-generating substrate. Can.
  • the shape, size and position of the liquid storage cavity 1111 are not limited, and can be designed according to needs.
  • the liquid storage chamber 1111 and the air outlet channel 1112 are arranged side by side on the same side of the installation chamber 1113 , and the liquid storage chamber 1111 is arranged around the air outlet channel 1112 .
  • the installation seat 112 is disposed in the installation cavity 1113 .
  • the installation base 112 has an atomizing cavity 1123 inside, and the atomizing core 113 is disposed in the atomizing cavity 1123 .
  • the installation seat 112 further includes an installation top cover 1121 and an installation base 1122 , and the installation top cover 1121 is sleeved on a side of the installation base 1122 close to the liquid storage cavity 1111 .
  • FIG. 5 is a schematic perspective view of the top cover in FIG. 3 at one angle
  • FIG. 6 is a schematic perspective view of the top cover in FIG. 3 at another angle.
  • the installation top cover 1121 includes a top wall 1121a and a side wall 1121b connected to each other, the side wall 1121b of the installation top cover 1121 may be an annular side wall, and is arranged on the side of the top wall 1121a of the installation top cover 1121 away from the liquid storage chamber 1111 .
  • the top wall 1121a and the side wall 1121b of the top cover 1121 can be integrally formed.
  • the top wall 1121 a of the top cover 1121 and the side wall 1121 b of the top cover 1121 are surrounded to form an atomization chamber 1123 .
  • top cover 1121 and the installation base 1122 it is also possible to install the top cover 1121 and the installation base 1122 to cooperate to form the atomization chamber 1123 , and the manner in which the installation base 112 forms the atomization chamber 1123 is not limited to the manner mentioned in this application.
  • FIG. 3 and Fig. 4 there is an air outlet 1121c on the top wall 1121a of the top cover 1121, one end of the air outlet 1121c communicates with the atomization chamber 1123, and the other end of the air outlet 1121c communicates with the air outlet channel 1112, so that the atomization
  • the cavity 1123 communicates with the gas outlet channel 1112 .
  • the aerosol atomized by the atomizing core 113 is mixed with the cold air and flows into the air outlet channel 1112 .
  • the end of the air outlet passage 1112 away from the installation cavity 1113 has an air outlet 1112a, that is, the port at one end of the air outlet passage 1112 is the air outlet 1112a, and the air outlet passage 1112 communicates with the outside atmosphere through the air outlet 1112a, so that the air in the air outlet passage 1112
  • the aerosol can flow out of the nebulizer 11 for the user to use.
  • Figure 7 is a schematic diagram of a three-dimensional structure of the atomization core in Figure 3;
  • the atomizing core 113 includes a base body 1133 , a heating layer 1134 and two electrodes 1135 .
  • the base 1133 has an atomizing surface 1131 on the side close to the liquid storage chamber 1111 , that is, the atomizing core 113 has an atomizing surface; the heating layer 1134 and two electrodes 1135 are disposed on the atomizing surface 1131 .
  • Substrate 1133 can store and direct the aerosol-generating substrate.
  • the material of the substrate 1133 can be a porous material, such as porous ceramics. The porous ceramics can use the capillary force to guide the aerosol-generating substrate to the heat-generating layer 1134, and the heat-generating layer 1134 can heat and atomize it to form an aerosol.
  • the heating layer 1134 can be a heating wire, a heating net, a heating film, a heating circuit, etc., which can be selected according to needs.
  • the two electrodes 1135 are arranged at both ends of the heating layer 1134, and the two electrodes 1135 can be electrically connected to the battery assembly 12 through the connector, so that after the two electrodes 1135 are energized, the heating layer 1134 between the two electrodes 1135 is energized to heat the gas.
  • the sol produces a matrix.
  • the atomizing surface of the atomizing core 113 faces the air outlet hole 1121c of the mounting base 112 , that is, the atomizing surface is set upward.
  • the atomizer 11 further includes a first seal 115 , a second seal 116 and a third seal 117 .
  • the first sealing member 115 is disposed at one end of the installation top cover 1121 close to the liquid storage cavity 1111 to realize the sealing between the installation top cover 1121 and the housing 111 .
  • the second sealing member 116 is sleeved on the atomizing core 113 to realize the sealing between the atomizing core 113 and the installation top cover 1121 .
  • the third seal 117 is disposed between the installation base 1122 and the atomizing core 113 to realize the sealing between the atomizing core 113 and the installation base 1122 and the sealing between the installation top cover 1121 and the installation base 1122 .
  • the material of the first sealing member 115 , the second sealing member 116 and the third sealing member 117 can be any sealing material that has certain flexibility and can withstand a certain temperature.
  • the first sealing member 115 , the second sealing member 116 and the third sealing member 117 are made of silica gel.
  • the shapes and sizes of the first sealing member 115 , the second sealing member 116 and the third sealing member 117 are not limited and can be designed according to requirements.
  • Fig. 8 is a cross-sectional view of the mounting base and the atomizing core in Fig. 3 after assembly.
  • the top wall 1121a on which the top cover 1121 is installed is also provided with a lower liquid hole 1121d, one end of the lower liquid hole 1121d communicates with the liquid storage chamber 1111, and the other end of the lower liquid hole 1121d communicates with the atomization chamber 1123, so that the liquid storage
  • the aerosol-generating substrate in the cavity 1111 can flow into the atomizing cavity 1123 through the lower liquid hole 1121d.
  • the number of the lower liquid holes 1121d can be one or more. In this embodiment, the number of the lower liquid holes 1121d is two, and they are arranged symmetrically on opposite sides of the air outlet holes 1121c.
  • the mounting base 112 has a liquid guiding channel 1124 therein.
  • the liquid guide channel 1124 can be formed in the installation top cover 1121, for example, the side wall 1121b of the installation top cover 1121 can form the liquid guide channel 1124, or the second sealing member 116 and the third sealing member 117 can be connected with the installation top cover
  • the side wall 1121b of 1121 cooperates to form a liquid guiding channel 1124, and the liquid guiding channel 1124 communicates with the lower liquid hole 1121d, so that the liquid guiding channel 1124 communicates with the liquid storage chamber 1111.
  • the liquid guiding channel 1124 can guide the aerosol-generating substrate in the liquid storage chamber 1111 to the side wall of the atomizing core 113 and/or the side of the atomizing core 113 away from the air outlet hole 1121c.
  • the liquid guiding channel 1124 guides the aerosol-generating substrate to the side of the atomizing core 113 away from the air outlet hole 1121c.
  • one end of the third sealing member 117 close to the atomizing core 113 is provided with a liquid guiding groove 1171 , and the liquid guiding groove 1171 communicates with the liquid guiding channel 1124 .
  • the liquid guiding groove 1171 can guide the aerosol generating substrate in the liquid guiding channel 1124 to the side of the atomizing core 113 away from the top wall 1121a where the top cover 1121 is installed, so that the atomizing core 113 can heat the atomized aerosol generating substrate to generate aerosol.
  • the second sealing member 116 may also be provided with a liquid guiding groove 1171 to guide the aerosol generating substrate in the liquid guiding channel 1124 to the side wall of the atomizing core 113 .
  • the aerosol generating substrate in the liquid storage chamber 1111 can flow to the side of the atomizing core 113 or the side opposite to the atomizing surface 1131, so that the atomizing core 113 can Absorb the aerosol-generating substrate and guide the aerosol-generating substrate to the atomizing surface 1131 to be heated to form an aerosol.
  • FIG. 9 is a partial cross-sectional view of the atomizer in FIG. 2 along the direction B-B.
  • the arrows in FIG. 9 indicate the airflow path in the atomizer 11 .
  • the side wall 1121b of the installation seat 112 cooperates with the side wall 1113a of the installation cavity 1113 to form the air guide channel 1125 .
  • One end of the air guide channel 1125 communicates with the air inlet 1122a of the atomizer 11, so that the outside atmosphere can enter the air guide channel 1125 through the air inlet 1122a of the atomizer 11; the other end of the air guide channel 1125 is connected with the atomizer
  • the cavity 1123 communicates so that the airflow in the air guiding channel 1125 can enter the atomizing cavity 1123 .
  • the mounting base 112 is provided with an air inlet 1125a, which may be provided on the side wall 1121b of the mounting top cover 1121.
  • One end of the air inlet 1125a is connected to the air guide channel 1125, and the other end is connected to the atomization chamber 1123 communicates, so that the airflow in the air guide channel 1125 enters the atomization chamber 1123 through the air inlet hole 1125a.
  • the air inlet 1125a can be arranged on the side of the atomizing surface 1131 facing the air outlet 1121c.
  • the aerosol generated by the atomizing surface 1131 carrying the atomizing core 113 flows through the air outlet hole 1121c to the air outlet channel 1112, and finally flows out of the atomizer 11 from the air outlet 1112a for use by the user.
  • FIG. 10 is another cross-sectional view of the assembly seat and atomizing core in FIG. 3 .
  • the outer surface of the side wall 1121b of the installation top cover 1121 is provided with an air guide groove 1121e, and the side wall 1113a of the installation cavity 1113 cooperates with the bottom wall of the air guide groove 1121e to form an air guide channel 1125, and the air guide channel 1125 is close to
  • One side of the top wall 1121a on which the top cover 1121 is installed is provided with an air inlet 1125a.
  • the side wall 1113a of the installation cavity 1113 may also be provided with an air guiding groove 1121e, and the side wall 1121b of the mounting seat 112 cooperates with the bottom wall of the air guiding groove 1121e to form an air guiding channel 1125 .
  • the way of forming the air guiding channel 1125 is not limited to the above-mentioned ways.
  • one end of the air guide groove 1121e is a closed end, which is arranged near the top wall 1121a of the top cover 1121; the other end of the air guide groove 1121e is an open end, extending to The bottom surface 1121f of the top cover 1121 is attached.
  • the shape of the air guide groove 1121e may be a rectangle as in this embodiment, or other shapes.
  • the number of air guide grooves 1121e can be one or more. In this embodiment, there are two air guiding grooves 1121e, which are respectively disposed on the outer surfaces of the two opposite side walls 1121b of the installation top cover 1121 .
  • the two air guide grooves 1121e respectively form two air guide channels 1125 with the side wall 1113a of the installation chamber 1113, and the two air guide channels 1125 communicate with the air outlet 1112a of the atomizer 11.
  • Each air guiding groove 1121e of the two air guiding grooves 1121e is provided with an air inlet 1125a at one end close to the top wall 1121a where the top cover 1121 is installed.
  • the airflow entering the atomizer 11 from the air outlet 1112 a flows into the atomization chamber 1123 through two air guiding channels 1125 .
  • the bottom surface 1121g of the air guide groove 1121e near the top wall 1121a of the top cover 1121 is inclined toward the inside of the top cover 1121, and the air inlet 1122a is arranged on the top of the air guide groove 1121e near the top cover 1121.
  • the end of the wall 1121a The depth of the air guide groove 1121e increases near the end of the top wall 1121a where the top cover 1121 is installed, and the closer to the top wall 1121a where the top cover 1121 is installed, the greater the depth of the air guide groove 1121e, so that the air flow of the air guide channel 1125 is easier
  • the air is guided from the air guide channel 1125 to the air outlet hole 1121c.
  • it is also possible that the entire bottom surface 1121g of the air guide groove 1121e is inclined toward the inside of the installation top cover 1121 .
  • the width of the air inlet hole 1125a may be smaller than the width of the air guiding groove 1121e, or may be equal to the width of the air guiding groove 1121e. In this embodiment, the width of the air inlet hole 1125a is equal to the width of the air guiding groove 1121e. The wider the width of the air inlet hole 1125a, the greater the air flow that can pass through the air inlet hole 1125a, which is beneficial to increase the amount of aerosol flowing out from the air outlet 1112a.
  • FIG. 11 is a partial flow velocity diagram of the gas in the atomizer in FIG. 2 , specifically, the partial flow velocity diagram at the atomization chamber 1123 shown in FIG. 11 .
  • the aerosol generated by the atomizing surface 1131 will form a vortex area near the atomizing surface 1131 , wherein the vortex area is an area surrounded by a dotted line frame.
  • the cold air flowing into the atomizing chamber 1123 from the air guide channel 1125 will conduct thermal convection with the hot aerosol generated on the atomizing surface 1131 .
  • the increase of the vortex area near the atomizing surface 1131 reduces the heat convection between the cold air and the hot aerosol, thereby The temperature of the airflow after the cold air is mixed with the aerosol is reduced, and the temperature of the aerosol flowing out of the air outlet 1112a of the nebulizer 11 is reduced, which improves the user experience.
  • FIG. 12 is a diagram of the local temperature distribution in the atomizer of FIG. 2 , specifically, the diagram of the local temperature at the atomization chamber 1123 shown in FIG. 12 .
  • the vortex area is smaller, and the temperature of the aerosol convected with the cold air is higher, so that the temperature of the airflow after the cold air is mixed with the aerosol is higher, and the flow out of the atomizer 11
  • the temperature of the aerosol at the air outlet 1112a is relatively high, resulting in poor user experience.
  • the value of h cannot be too large.
  • the vortex area of the aerosol is too large, and the aerosol convective with the cold air is too little, which will make the aerosol flow out of the air outlet 1112a of the nebulizer 11 The amount is too small.
  • the parameters of the atomizer 11 used in the experiment are as follows: the diameter of the air outlet channel 1112 is 2.5mm, the length is 29.4mm, the initial temperature of the S-shaped heating layer 1134 on the atomization core 113 is 250°, the atomization The amount is 3s/9mg, and the input power of the battery assembly 12 to the atomizing core 113 is 6.5W.
  • Table 1 shows when h is 0mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, and 0.7mm respectively, the gas outlet 1112a flowing out of the atomizer 11
  • Fig. 13 is the temperature curve of the distance-outlet 1112a drawn according to the experimental results of Table 1
  • Fig. 14 is the distance-out according to the experimental results of Table 1 drawn A graph of the amount of aerosol at the air port.
  • a certain distance h can be set between the atomizing surface 1131 and the air inlet 1125a.
  • the range corresponding to h is 0mm ⁇ h ⁇ 0.7mm.
  • the value of h can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm and so on.
  • the distance between the atomizing surface 1131 and the air inlet 1125a is close to the bottom surface 1125b of the atomizing surface 1131
  • the spacing is set in an appropriate range so that the temperature of the aerosol flowing out of the air outlet 1112a of the atomizer 11 is reduced while ensuring that the amount of smoke of the aerosol flowing out of the air outlet 1112a of the atomizer 11 will not be too small, which is beneficial Improve user experience.
  • the inventor also tried to reduce the temperature of the aerosol at the air outlet 1112a by increasing the length of the air outlet channel 1112.
  • the temperature of the aerosol at the air outlet 1112a is 93.16°
  • the temperature of the aerosol at the air outlet 1112a is 87°.
  • the temperature has decreased by 6.17°
  • the length of the air outlet channel 1112 has increased by more than 50%, which is unacceptable for product design. Therefore, the technical solution of setting a certain distance h between the atomizing surface 1131 and the air inlet hole 1125a has Significant performance and effectiveness improvements. Reference can be made to FIG.
  • FIG. 16 is a schematic diagram of an exploded structure of installing the top cover, the atomizing core, the second seal, the third seal and the installation base in FIG. 3 .
  • the installation base 1122 includes a bottom 1122b and a support part 1122c
  • the installation top cover 1121 is sleeved on the support part 1122c and abuts against the bottom 1122b
  • the support part 1122c is set in the atomization cavity 1123
  • the atomization core 113 is set in the support part 1122c is close to the side of the top wall where the top cover 1121 is installed.
  • FIG. 17 is a schematic diagram of the exploded structure of the mounting seat and the end cover in FIG. 3 .
  • the end cover 114 covers the end of the housing 111 away from the air outlet 1112a, for example, the end cover 114 can be sleeved on the end of the housing 111 away from the air outlet 1112a, and the housing 111 and the end cover 114 are detachably connected.
  • the side of the installation base 1122 facing away from the installation top cover 1121 has an air inlet 1122a, and the end cover 114 is provided with a through hole 1141, the through hole 1141 communicates with the external atmosphere, and the air inlet 1122a communicates with the through hole 1141, so as to The outside atmosphere is allowed to enter the air inlet 1122a.
  • the bottom 1122b of the mounting base 1122 has a first groove 1122d on a side facing away from the supporting portion 1122c, and the first groove 1122d serves as the air inlet 1125a and communicates with the through hole 1141 .
  • An end of the first groove 1122d close to the air guiding groove 1121e has a first opening 1122e penetrating through the bottom 1122b of the mounting base 1122 .
  • the first opening 1122e may be a through hole or a notch at the edge of the bottom 1122b.
  • the first opening 1122e communicates the first groove 1122d with the end of the air guide groove 1121e near the bottom 1122b, so that air can flow from the first groove 1122d into the air guide groove 1121e.
  • the number of the first openings 1122e may be the same as the number of the air guiding grooves 1121e.
  • the number of first openings 1122e is two, and the two first openings 1122e are arranged opposite to the two air guide grooves 1121e, and the two first openings 1122e respectively connect the first groove 1122d with the two The air guiding groove 1121e is connected.
  • FIG. 18 is a schematic diagram of another exploded structure for installing the top cover, the atomizing core, the second seal, the third seal and the installation base in FIG. 3 .
  • the atomizer 11 also includes two electrode connectors 118, one end of each electrode connector 118 is electrically connected to an electrode 1135; The through hole 1141 of the cover 114 is exposed, so that the electrode connector 118 can be electrically connected with the battery assembly 12 , so that the battery assembly 12 can supply power to the atomizing core 113 .
  • the two electrode connectors 118 are respectively disposed on both sides of the atomizing core 113 , and are disposed corresponding to the positions of the electrodes 1135 . That is, the two electrode connectors 118 are arranged symmetrically about the center of rotation.
  • two second grooves 1122f are provided on the surface of the bottom 1122b facing away from the supporting portion 1122c, which are respectively used for accommodating the ends of the two electrode connecting parts 118 away from the atomizing core 113 .
  • the second groove 1122f has a second opening 1122g on the side close to the housing 111, and the second opening 1122g may be a gap provided on the edge of the bottom 1122b.
  • the corresponding second openings 1122g are disposed in the corresponding second grooves 1122f.
  • the arrangement of the electrode connector 118 is not limited to the arrangement provided in this application, and other arrangements are also possible, as long as the two electrodes 1135 of the atomizing core 113 can be electrically connected with the battery assembly 12 .
  • FIG. 19 is a partial structural schematic view of the second embodiment of the atomizer provided by the present application.
  • the structure of the atomizer 11 is basically the same as that of the first embodiment of the atomizer 11, the difference is that the atomizer 11 includes a cooling structure 119, and the cooling structure 119 is arranged on In the air outlet channel 1112. Wherein, the cooling structure 119 is configured to reduce the temperature of the aerosol flowing through the air outlet channel 1112 .
  • the cooling structure 119 in the air outlet channel 1112 By setting the cooling structure 119 in the air outlet channel 1112 to interfere with the flow state of the aerosol near the wall of the air outlet channel 1112, the heat transfer coefficient of the wall surface of the air outlet channel 1112 is increased, thereby allowing the gas to flow out of the outlet of the atomizer 11 The temperature of the aerosol in 1112a is reduced, which is beneficial to improve user experience.
  • the distance h between the atomization surface of the atomization core 113 and the air inlet 1125a is set as above (atomizer 11 first
  • the content specifically introduced in the embodiment: the distance h) between the atomization surface of the atomization core 113 and the air inlet hole 1125a is optional.
  • the distance h between the atomizing surface of the atomizing core 113 and the air inlet hole 1125a is set as above, which can It is better to reduce the temperature of the aerosol at the air outlet 1112a, and the way to reduce the temperature of the aerosol at the air outlet 1112a can be designed according to specific needs.
  • the cooling structure 119 can absorb the heat of the aerosol, and on the other hand, it can interfere with the flow field near the wall of the air outlet channel 1112 to improve the heat exchange efficiency between the aerosol and the wall of the air outlet channel 1112 .
  • the cooling structure 119 is a spiral member (not shown in the figure), the spiral member is arranged in the air outlet channel 1112, and the inner wall surface of the air outlet channel 1112 is spaced apart from the spiral member, and it can close the wall surface of the air outlet channel 1112 The flow field at the position is disturbed, and the heat exchange efficiency between the aerosol and the wall surface of the air outlet channel 1112 is improved, so as to reduce the temperature of the aerosol at the air outlet 1112a.
  • the spiral member can be fixed in the air outlet channel 1112 through a fixing structure.
  • the spiral member is made of a metal spring, the manufacturing process is simple, and the metal material has a better heat absorption effect than other materials, which is beneficial to further reduce the temperature of the aerosol at the air outlet 1112a.
  • the cooling structure 119 is a protrusion 1191 disposed on the inner wall of the air outlet channel 1112 .
  • the protrusion 1191 is integrally formed with the side wall of the air outlet channel 1112; that is, similar to the structure of a corrugated tube.
  • the cooling structure 119 is an independent component, and a spiral (not shown) is arranged in the air outlet channel 1112, and the outer wall of the spiral is attached to the inner wall of the air outlet 1112, so that the spiral serves as the air outlet 1112
  • the inner wall surface of the air outlet channel 1112 is a smooth surface, and the screw is fixed by the friction between the screw and the air outlet channel 1112; or, the inner wall of the air outlet channel 1112 is provided with a spiral groove that cooperates with the screw to realize the fixing of the screw , and the wire diameter of the helix is larger than the depth of the helical groove, so as to form the protrusion 1191 .
  • the spiral member is rotated and inserted into the spiral groove of the air outlet channel 1112 .
  • the spiral member is a metal spring, and the metal material has better heat absorption and heat conduction effects than other materials, which is beneficial to further reduce the temperature of the aerosol at the air outlet 1112a.
  • the wire diameter of the metal spring is 0.2mm-0.3mm
  • the wire diameter of the metal spring is the height of the formed protrusion 1191
  • the turn pitch of the metal spring is the distance between adjacent protrusions 1191; wherein , the wire diameter of the metal spring is the diameter of the metal wire used to make the metal spring.
  • the wire diameter of the metal spring is 0.2mm-0.3mm
  • the diameter of the metal spring is 3mm
  • the length of the air outlet channel 1112 is 28mm
  • the size design of the protrusion 1191 and the size design between adjacent protrusions 1191 can refer to the height of the protrusion 1191, the adjacent The ratio of the distance between the centers of the protrusions 1191 to the height of the protrusions 1191.
  • the selection of the spiral can also refer to the height of the protrusion 1191 , the ratio of the distance between the centers of adjacent protrusions 1191 to the height of the protrusion 1191 described later.
  • Fig. 20 is the structural schematic diagram of the first experimental piece
  • Fig. 21 is the structural schematic diagram of the second experimental piece
  • Fig. 22 is the airflow temperature distribution diagram at the outlet of the first experimental piece
  • Fig. 23 is the second experimental piece Airflow temperature distribution at the outlet of the test piece.
  • the first test piece shown in FIG. 20 is a round tube 30 with a smooth inner wall, and the length of the round tube 30 is 50 mm.
  • the port on the left side of the round pipe 30 is the inlet, and the port on the right side of the round pipe 30 is the outlet, and the airflow flows from the inlet to the outlet.
  • the second experimental piece shown in Fig. 21 is the round tube 30 that is provided with protrusion 31 on the inner wall surface, and the length of round tube 30 is 50mm, and the height of protrusion 31 is 0.5mm; Wherein, along the height direction of protrusion 31 , The cross-sectional shape of the protrusion 31 is square.
  • the protrusion 31 is provided along the inner surface of the circular tube 30 for a circle.
  • the port on the left side of the round pipe 30 is the inlet, and the port on the right side of the round pipe 30 is the outlet, and the airflow flows from the inlet to the outlet.
  • the temperature from the pipe wall to the center gradually increases, that is, the highest temperature of the airflow at the outlet is in the central region; as can be seen from Figure 23, the highest temperature of the airflow at the outlet of the second experimental piece is 73.3°C.
  • the provision of protrusions 31 on the inner wall of the circular tube 30 reduces the maximum temperature at the outlet by 13.4%, and the cooling effect is obvious. That is to say, the protrusion 1191 (namely, the cooling structure 119 ) is provided on the inner wall of the air outlet channel 1112 , which can obviously reduce the temperature of the aerosol at the air outlet 1112 a, which is beneficial to improve the user experience.
  • the gas used in the experiment is aerosol or its characteristics are similar to aerosol.
  • FIG. 24 is a schematic diagram of the change law of the local surface heat transfer coefficient corresponding to different boundary layer shapes
  • FIG. 25 is a schematic diagram of the flow path of the airflow in the outlet channel of FIG. 19 .
  • the horizontal axis x represents the distance between the fluid and the inlet of the pipe
  • the vertical axis h x represents the heat transfer coefficient.
  • the fluid enters the pipeline from the inlet of the pipeline, and the shape of the boundary layer after the fluid enters the pipeline is divided into laminar boundary layer, transition zone, and turbulent boundary layer.
  • the heat transfer coefficient of the turbulent boundary layer is higher than that of the laminar boundary layer.
  • the heat transfer in the laminar boundary layer is mainly through heat conduction, and the heat transfer coefficient of air is small, so the heat transfer coefficient is at a low level as a whole; and in the laminar boundary layer, with The heat transfer coefficient decreases as the thickness of the laminar boundary layer increases.
  • the flow velocity of the aerosol in the air outlet channel 1112 is usually not high, and the flow boundary layer near the wall surface is close to the form of laminar flow; After the structure, it is equivalent to artificially disturbing the flow boundary layer near the wall, making it change from a regular laminar flow form to a turbulent flow form.
  • the heat transfer coefficient of the sol helps the aerosol to exchange heat with the side wall of the air outlet channel 1112, and more heat is absorbed by the side wall of the air outlet channel 1112, thereby reducing the temperature of the aerosol at the air outlet 1112a.
  • Fig. 26 is a distribution diagram of the velocity field in the outlet channel of the conventional atomizer
  • Fig. 27 is a distribution diagram of the velocity field in the outlet channel of the atomizer provided in the second embodiment of the present application.
  • the flow field in the air outlet channel 1112 can be divided into a near wall area and a mainstream area, and the heat exchange between the aerosol and the side wall of the air outlet channel 1112 mainly occurs in the near wall area.
  • the protrusion 1191 that is, the cooling structure 119
  • the layer state improves the heat exchange efficiency between the aerosol and the side wall of the air outlet channel 1112, while the aerosol in the mainstream region has little influence.
  • the flow velocity in the near-wall area is less than 3ms ⁇ -1, and the flow velocity in the near-wall area is faster as it is closer to the mainstream area, and the flow velocity in the mainstream area is greater than 3ms ⁇ -1.
  • the protrusion 1191 i.e., the cooling structure 119
  • the flow field is the velocity field.
  • the height of the protrusions 1191 is 0.3 mm-0.6 mm; and/or, the ratio of the distance between the centers of adjacent protrusions 1191 to the height of the protrusions 1191 is 1:20-1:7 .
  • the cross-sectional shape of the protrusion 1191 can be circular, square, rectangular, triangular, etc., and can be specifically designed according to needs.
  • the height of the protrusion 1191 and the ratio of the distance between the height of the protrusion 1191 and the center of the adjacent protrusion 1191 will be described in detail below by taking the cross-section of the protrusion 1191 as a square or a circle as an example.
  • FIG. 28 is a schematic structural diagram of a protrusion with a square cross section in FIG. 19
  • FIG. 29 is a structural schematic diagram of a protrusion with a circular cross section in another embodiment.
  • the cross section of the protrusion 1191 is a square.
  • the cross section of the protrusion 1191 is circular.
  • the height of the protrusion 1191 is represented by "H”
  • the distance between the centers of adjacent protrusions 1191 is represented by "P”.
  • the height of the protrusion 1191 has a great influence on the heat exchange efficiency and the suction resistance of the atomizer 11, so the height of the protrusion 1191 can be designed by comprehensively considering the cooling effect of the aerosol at the air outlet 1112a and the suction resistance of the atomizer 11 .
  • the distance between the centers of adjacent protrusions 1191 affects the flow field near the wall of the outlet channel 1112, and the flow field near the wall of the outlet channel 1112 is also related to the height of the protrusions 1191, so it can be analyzed through flow field analysis and
  • the height of the protrusions 1191 is used to design the distance between the centers of adjacent protrusions 1191 .
  • the upper limit of the drawing resistance additionally caused by the protrusion 1191 is set to 100 Pa. Taking the cross-section of the protrusion 1191 as a square as an example, the relationship between the height of the protrusion 1191 , the length of the air outlet channel 1112 and the suction resistance of the atomizer 11 is studied, and the optimal value of the height of the protrusion 1191 is determined.
  • Fig. 30 is the calculated change law of the suction resistance with the protrusion height for different air outlet channel lengths.
  • Fig. 31 is the temperature distribution diagram of the air outlet corresponding to different protrusion heights.
  • the suction resistance of the air outlet channel 1112 increases with the increase of the height of the protrusion 1191 and the length of the air outlet channel 1112; the shorter the length of the air outlet channel 1112, the larger the upper limit of the height of the protrusion 1191 is.
  • the height of the protrusion 1191 may be 0.6 mm, or even 0.62 mm; therefore, the upper limit of the height of the optional protrusion 1191 is 0.6 mm.
  • the length of the air outlet channel 1112 is represented by "L" in FIG. 30 .
  • the highest temperature of the aerosol at the air outlet 1112a is in the central area, and on the premise that the length of the air outlet channel 1112 is the same, when the protrusion 1191 is not provided, the highest temperature of the aerosol at the air outlet 1112a is 84.6°C;
  • the maximum temperature of the aerosol at the air outlet 1112a is 83.8°C, which is 0.9% lower than that without the protrusion 1191;
  • the maximum temperature of the aerosol at the air outlet 1112a is 81.7°C, which is 3.4% lower than that without the protrusion 1191;
  • the maximum temperature of the aerosol at the air outlet 1112a is 78.5°C, compared with Without the protrusion 1191, the temperature is reduced by 7.2%;
  • the maximum temperature of the aerosol at the air outlet 1112a is 75.3°C, which is 1
  • the optional height of the protrusion 1191 is greater than or equal to 0.3 mm.
  • FIG. 32 is a schematic diagram for calculation of a flow field with a convex section having a square shape.
  • a protrusion 31 is provided in a circular tube 30 with a diameter of 1.5 mm.
  • the cross section of the protrusion 31 is a square, and the gas flows through the circular tube 30 at a speed of 2.6 m/s. .
  • the characteristics of the selected gas are similar to those of the aerosol; the flow velocity of the gas is the real flow velocity of the aerosol in the gas outlet channel 1112 .
  • the height of the protrusions 31 is indicated by "H"
  • the distance between the centers of adjacent protrusions 31 is indicated by "P".
  • the height H of the protrusions 31 only affects the value of the heat transfer coefficient, and the variation of the heat transfer coefficient is mainly affected by the ratio (P/H) of the distance between the centers of adjacent protrusions 31 to the height of the protrusions 31 .
  • the cooling effect is the best when the ratio (P/H) of the distance between the centers of adjacent protrusions 31 to the height of the protrusions 31 is 10-20. Therefore, when the cross-section of the protrusions 1191 arranged on the inner wall of the air outlet channel 1112 is a square, the ratio of the distance between the centers of adjacent protrusions 1191 to the height of the protrusions 1191 is 10-20, optionally, 13 -17.
  • FIG. 36 is a schematic diagram for calculation of a flow field with a circular section of the protrusion.
  • a protrusion 31 is provided in a circular tube 30 with a diameter of 1.5 mm.
  • the cross section of the protrusion 31 is circular, and the gas flows through the circular tube at a speed of 2.6 m/s. 30.
  • the characteristics of the selected gas are similar to those of the aerosol; the flow velocity of the gas is the real flow velocity of the aerosol in the gas outlet channel 1112 .
  • the diameter of the protrusion 31 is indicated by "H", and the distance between the centers of adjacent protrusions 31 is indicated by "P”. Since the section of the protrusion 31 is circular, the height of the protrusion 31 is the same as the diameter of the protrusion 31 .
  • Fig. 37 is a diagram of the change law of the heat transfer coefficient at different heights of the circular section protrusions. It can be seen from Fig. 37 that the change law of the heat transfer coefficient is basically the same for different heights H of the protrusions 31 .
  • the height H of the protrusions 31 only affects the value of the heat transfer coefficient, and the variation of the heat transfer coefficient is mainly affected by the ratio (P/H) of the distance between the centers of adjacent protrusions 31 to the height of the protrusions 31 .
  • Figure 38 is The distribution diagram of the velocity field corresponding to the different P/H values of the circular cross-section bulges.
  • Figure 39 is a diagram of the change law of the heat transfer coefficient with the different P/H values of the circular cross-section bulges.
  • the cooling effect is the best when the ratio (P/H) of the distance between the centers of adjacent protrusions 31 to the height of the protrusions 31 is 7-20. Therefore, when the cross-section of the protrusions 1191 arranged on the inner wall surface of the air outlet channel 1112 is circular, the ratio of the distance between the centers of adjacent protrusions 1191 to the height of the protrusions 1191 is 7-20, and optionally, is 11-16.
  • the optimal design of the height of the protrusion 1191, the distance between the centers of adjacent protrusions 1191 and the height of the protrusion 1191 is shown in Table 2. .
  • the height of the protrusion 1191 is 0.6 mm-0.7 mm; when the length of the air outlet channel 1112 is greater than 20 mm and less than or equal to 30mm, the height of the protrusion 1191 is 0.5mm-0.6mm; when the length of the air outlet channel 1112 is greater than 30mm and less than or equal to 40mm, the height of the protrusion 1191 is 0.4mm-0.5mm; when the length of the air outlet channel is greater than 40mm and less than When equal to 50mm, the height of the protrusion 1191 is 0.35mm-0.45mm; when the length of the air outlet channel is greater than 50mm, the height of the protrusion 1191 is 0.3mm-0.4mm.
  • the height of the protrusion 1191 is 0.6 mm.
  • the length of the air outlet channel is greater than 40mm and less than 50mm, optionally, the height of the protrusion 1191 is 0.4mm.
  • the ratio of the distance between the centers of adjacent protrusions 1191 to the height of the protrusions 1191 is 10-20.
  • the ratio of the distance between the centers of adjacent protrusions 1191 to the height of the protrusions 1191 is 7-20.
  • the width of the protrusion 1191 is the same as the height of the protrusion 1191, the distance between the centers of adjacent protrusions 1191 and the distance between the centers of adjacent protrusions 1191 Designing the ratio of the distance of the protrusion 1191 to the height of the protrusion 1191 also takes into account the influence of the width of the protrusion 191 on the temperature of the aerosol at the air outlet 1112a.
  • FIG. 40 is a schematic diagram of the partial structure of the third embodiment of the atomizer provided by the present application.
  • the structure of the atomizer 11 is basically the same as that of the first embodiment of the atomizer 11, except that the air outlet channel 1112 of the atomizer 11 is far away from the atomizing core 113 One end of the first split into a plurality of sub-outlet channels 1112b and then converge together again.
  • the tongue When the user sucks through the air outlet 1112a, the tongue is located at or corresponds to the central position A of the air outlet 1112a, and the tongue is the key to temperature perception. By reducing the temperature at the central position A of the air outlet 1112a, the user can reduce the air temperature perceived by the user. Sol temperature, thereby improving the user experience.
  • the inventors of the present application have found that if the air outlet channel 1112 adopts a straight-through structure, the temperature of the aerosol flowing out from the central position A of the air outlet 1112a is higher than that of the surrounding aerosol (see the test results in Figure 42 for details).
  • the temperature of the aerosol at the central position A of the air outlet 1112a is reduced by making the air outlet channel 1112 split into a plurality of sub-air outlet channels 1112b at the end away from the atomizing core 113 and converge again. That is to say, the aerosol atomized by the atomizing core 113 first splits into multiple sub-air outlet channels 1112b at the end of the air outlet channel 1112 away from the atomizing core 113, and then gathers together and flows out from the air outlet 1112a.
  • the temperature perceived by the user when inhaling the aerosol through the air outlet 1112a is significantly lower, which is beneficial to improve the user experience.
  • the number of sub air outlet channels 1112b can be designed according to needs.
  • a separator 1112c is provided in the air outlet channel 1112 to divide the end of the air outlet channel 1112 away from the atomizing core 113 into two sub-air outlet channels 1112b, so that the air outlet channel 1112 first divides the flow; wherein, the separator 1112c
  • the extending direction is the same as the extending direction of the air outlet channel 1112 .
  • the end surface of the separator 1112c close to the air outlet 1112a is spaced from the air outlet 1112a, so that the air outlet channels 1112 are converged after being split (as shown in FIG. 40 ).
  • the air outlet channel 1112 includes a first part, a second part and a third part, the inlet of the air outlet channel 1112 is the inlet of the first part, and the outlet of the third part is the air outlet 1112a; the first part and the third part are straight pipes
  • the separator 1112c is disposed on the second part, so that the second part has an obvious split flow effect relative to the first part and the third part, so as to realize split flow cooling.
  • the number of sub-air outlet channels 1112b can be designed according to needs, and the structure of the partition 1112c can be designed according to the number of sub-air outlet channels 1112b.
  • the separator 1112c may be integrally formed with the air outlet channel 1112, or may be fixed together with the air outlet channel 1112 by clamping, etc., and is specifically designed according to needs.
  • the thickness of the separator 1112c is designed according to needs, so that the end of the air outlet channel 1112 away from the atomizing core 113 can be divided into two sub-air outlet channels 1112b, and the temperature of the aerosol flowing through the sub-air outlet channels 1112b can be cooled.
  • the aerosol is mixed with the air in the sub-air outlet channel 1112b to cool down, and the aerosol flowing through the sub-air outlet channel 1112b is absorbed by the cavity wall of the sub-air outlet channel 1112b, thereby reducing the temperature of the aerosol at the air outlet 1112a. Furthermore, since the aerosols in the two sub-air outlet channels 1112b converge and mix at the central position A of the air outlet 1112a, the temperature of the aerosol flowing out from the central position A is further reduced (see the test results in FIG. 44 for details).
  • the partition 1112c can be a solid plate, that is, part of the cavity wall of the two sub-air outlet channels 1112b is shared, and the thickness of the partition 1112c should be set to reduce the temperature of the aerosol in the two sub-air outlet channels 1112b.
  • the partition 1112c can be a hollow plate, that is, the interior of the partition 1112c is hollow, and the two sub-air outlet channels 1112b are two completely separated channels; the wall thickness of the partition 1112c and the width of the hollow cavity inside (The width of the hollow cavity inside the partition 1112c is the dimension along the thickness direction of the partition 1112c) determines the thickness of the partition 1112c, the wall thickness of the partition 1112c and the width of the internal hollow cavity are designed according to needs, can Realize shunt cooling.
  • the separator 1112c is a rectangular hollow plate.
  • the ratio of the length of the separator 1112c (the length of the separator 1112c is the dimension along the direction in which the outlet channel 1112 extends) to the length of the outlet channel 1112 is 1: 5-1:4.
  • the dimension of the end of the air outlet channel 1112 away from the atomizing core 113 in the width direction of the atomizer 11 becomes larger to form a widened section B; the widened section B is the second and third parts of the air outlet channel 1112 .
  • the separator 1112c is arranged on the widening section B and parallel to the thickness direction of the atomizer 11, so as to divide the end of the air outlet channel 1112 away from the atomizing core 113 into two sub-air outlet channels 1112b; the end surface of the separator 1112c close to the air outlet 1112a and the
  • the air outlets 1112a are arranged at intervals, so that the third part of the air outlet channel 1112 is a straight-through pipe, and the aerosols in the two sub-air outlet channels 1112b are gathered together in the third part and flow out from the air outlet 1112a.
  • the partition 1112c provided on the widened section B can have a larger thickness, which can better cool down the aerosol in the two sub-air outlet channels 1112b.
  • the end surface of the widening section B close to the atomizing core 113 is flush with the end surface of the partition 1112c close to the atomizing core 113, that is, the channel width of the air outlet channel 1112 is increased only at the place where the partition 1112c is installed. Width.
  • the widened section B may have the same cross-sectional shape and area along its extending direction; that is, the widened section B is a straight-through structure.
  • the widening section B may include a first section and a second section, the second section is located on the side of the first section away from the atomizing core 113; the cross-sectional area of the first section along the direction away from the atomizing core 113 gradually increases , so that the longitudinal section of the first section along the direction away from the atomizing core 113 is a tapered structure; the cross-sectional area of the second section along the direction away from the atomizing core 113 is the same, that is, the second section is a straight-through structure (such as Figure 40).
  • the aerosol can be prevented from forming a vortex at the corner of the widened section B, thereby avoiding the influence of the structure of the widened section B on the amount of aerosol flowing out of the air outlet 1112a.
  • the two sub-air outlet channels 1112b can be arranged symmetrically along the partition 1112c, so that the aerosol atomized by the atomizing core 113 flows through the two sub-air outlet channels 1112b, and the aerosol can respectively achieve the same cooling effect in the two sub-air outlet channels 1112b.
  • Figure 41 is a schematic diagram of the partial structure of the existing atomizer
  • Figure 42 is the cloud map of the aerosol temperature distribution at the air outlet of the atomizer provided in Figure 41
  • Figure 43 is the atomization provided in Figure 40
  • Fig. 44 is the flow velocity vector distribution diagram on several surfaces of the air outlet channel of the nebulizer near the air outlet provided in Fig. 40 .
  • the structure of the atomizer provided in Figure 41 is different from the structure of the atomizer 11 provided in Figure 40 only in the setting of the air outlet channel.
  • the air outlet channel of the atomizer in Figure 41 is a straight-through structure.
  • the test conditions are as follows: the diameter of the air outlet channel is 2.5mm, the length of the air outlet channel is 32.9mm, the initial temperature of the S-shaped heating layer 1134 on the atomizing core is 250°C, and the atomization amount is 3s/9mg.
  • the atomizer 11 provided in Figure 40 was tested under the following test conditions: the diameter of the end of the air outlet channel 1112 close to the atomizing core 113 before splitting is 2.5mm, and the record between the inlet of the air outlet channel and the air outlet 1112a is 32.9mm, The initial temperature of the S-shaped heating layer 1134 on the atomizing core 113 is 250°C, and the atomization amount is 3s/9mg.
  • the test results are shown in Figure 42- Figure 44.
  • the air outlet channel 1112 is divided into multiple sub-air outlet channels 1112b at the end away from the atomizing core 113 and then converged together, so that the temperature of the aerosol at the air outlet 1112a is significantly lowered, and the user experience is improved.
  • the atomizer 11 with the air outlet channel 1112 of the split flow structure is tested, and the test conditions are: the diameter of the end of the air outlet channel 1112 close to the atomizing core 113 before splitting is 2.5mm, and the record between the inlet of the air outlet channel and the air outlet 1112a
  • the initial temperature of the S-shaped heating layer 1134 on the atomizing core 113 is 250°C, and the atomization amount is 3s/9mg.
  • the test results are shown in Figure 45 and Figure 46.
  • Figure 45 is the relationship curve between the maximum temperature of the aerosol at the air outlet and the separation distance d
  • Figure 46 is the relationship between the aerosol temperature at the center position A of the air outlet and the separation distance d Graph. It can be understood that the highest aerosol temperature at the air outlet 1112a in Fig. 45 refers to the highest aerosol temperature on the entire air outlet 1112a.
  • Analyzing Figure 45 it can be concluded that the distance d between the end surface of the partition 1112c near the air outlet 1112a and the air outlet 1112a has little effect on the maximum aerosol temperature at the air outlet 1112a.
  • Analyzing Figure 46 it can be concluded that when the distance d between the end face of the partition 1112c close to the air outlet 1112a and the air outlet 1112a is greater than 3mm, the aerosol temperature at the center position A of the air outlet 1112a no longer has The relatively large change indicates that when the separation distance d is equal to 3mm, the aerosols have been mixed sufficiently, and further increasing the separation distance d has very limited influence on the temperature distribution of the aerosol at the air outlet 1112a. Therefore, the optional range of d is 0mm ⁇ d ⁇ 3mm, and the more optional range of d is 0mm ⁇ d ⁇ 2.5mm.
  • the atomizer 11 obtained from the experimental data in Fig. 46 is provided with an air outlet channel 1112 with a split flow structure, and the distance h between the atomization surface of the atomization core 113 and the air inlet hole 1125a is set to be 0.4 mm.
  • the temperature of the aerosol at the air outlet 1112a is reduced by making the air outlet channel 1112 split into multiple sub-air outlet channels 1112b at the end away from the atomizing core 113 and then converging together, the atomization of the atomizing core 113
  • the distance h between the surface and the air inlet 1125a is set as above (the content introduced in the first embodiment of the atomizer 11: the distance h between the atomization surface of the atomizing core 113 and the air inlet 1125a) to reduce
  • the aerosol temperature at the air outlet 1112a is optional, and it is also possible to set a cooling structure 119 (the cooling structure 119 specifically introduced in the second embodiment of the atomizer 11 ) in the air outlet channel 1112 to reduce the aerosol temperature at the air outlet 1112a selected.
  • the three implementations of reducing the aerosol temperature at the air outlet 1112a described above can be combined arbitrarily according to needs, and the aerosol temperature at the air outlet 1112a of the nebulizer 11 can be in the range of 55°C-85°C, optional Yes, the temperature range of the aerosol at the air outlet 1112a of the atomizer 11 is 70°C-80°C.

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Abstract

L'invention concerne un atomiseur (11) et un dispositif d'atomisation électronique. L'atomiseur (11) comprend un boîtier (111), une base de montage (112), et un noyau d'atomisation (113) ; le boîtier (111) est pourvu d'un canal de sortie d'air (1112), et l'intérieur de la base de montage (112) est pourvue d'une cavité d'atomisation (1123) ; le noyau d'atomisation (113) est disposé dans la cavité d'atomisation (1123) ; le noyau d'atomisation (113) a une surface d'atomisation, la surface d'atomisation fait face à un trou de sortie d'air (1121c) de la base de montage (112), et le canal de sortie d'air (1112) est en communication avec le trou de sortie d'air (1121c) de la base de montage (112) ; la base de montage (112) est pourvue d'un trou d'entrée d'air (1125a), et le trou d'entrée d'air (1125a) est utilisé pour être en communication avec l'atmosphère extérieure et la cavité d'atomisation (1123) de telle sorte que l'atmosphère extérieure puisse s'écouler dans la cavité d'atomisation (1123) au moyen du trou d'entrée d'air (1125a) ; la surface d'atomisation et le trou d'entrée d'air (1125a) sont conçus pour être espacés d'une certaine distance h, et une structure de refroidissement (119) est disposée dans le canal de sortie d'air (1112), de telle sorte que la température d'un aérosol du trou de sortie d'air (1112a) soit comprise entre 55° C et 85° C.
PCT/CN2021/132826 2021-11-24 2021-11-24 Atomiseur et dispositif d'atomisation électronique WO2023092337A1 (fr)

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