WO2022021036A1 - 雾化芯、雾化器及电子雾化装置 - Google Patents

雾化芯、雾化器及电子雾化装置 Download PDF

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Publication number
WO2022021036A1
WO2022021036A1 PCT/CN2020/105001 CN2020105001W WO2022021036A1 WO 2022021036 A1 WO2022021036 A1 WO 2022021036A1 CN 2020105001 W CN2020105001 W CN 2020105001W WO 2022021036 A1 WO2022021036 A1 WO 2022021036A1
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WO
WIPO (PCT)
Prior art keywords
heating
atomizing core
core according
liquid
heating surface
Prior art date
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PCT/CN2020/105001
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English (en)
French (fr)
Inventor
何雪琴
肖从文
陈武
Original Assignee
深圳麦克韦尔科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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/CN2020/105001 priority Critical patent/WO2022021036A1/zh
Priority to EP20947032.7A priority patent/EP4190178A4/en
Priority to JP2023504829A priority patent/JP2023535747A/ja
Publication of WO2022021036A1 publication Critical patent/WO2022021036A1/zh
Priority to US18/155,640 priority patent/US20230148668A1/en

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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
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—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
    • A24F40/10—Devices using liquid inhalable precursors

Definitions

  • the invention relates to the technical field of atomization, in particular to an atomization core, an atomizer and an electronic atomization device.
  • Electronic atomization devices usually use an atomizing core to atomize the liquid to form aerosol (smoke) for the user to inhale.
  • the atomizing core and the power supply are electrically connected through leads or thimbles.
  • the stability and reliability of the connection between the thimble and the atomizing core will compress the total area of the entire heating surface, resulting in a low utilization rate of the heating surface, which is not conducive to the layout of the heating body on the heating surface, and ultimately affects the atomization of the entire atomizing core. Effect.
  • a technical problem solved by the present invention is how to improve the atomization effect of the atomizing core.
  • An atomizing core of an electronic atomization device comprises:
  • the heating element is used to generate heat
  • the electrode body is electrically connected to the heating body
  • a base body the base body is used to store liquid and has a mounting surface and a heating surface arranged at an interval from the mounting surface, the electrode body is arranged on the mounting surface, the heating body is arranged on the heating surface, and the The heat generating surface absorbs the heat generated by the heat generating body and can atomize the liquid.
  • An atomizer the atomizer comprises a suction nozzle and the atomizing core described in any one of the above, an airflow channel is opened in the suction nozzle, and the atomizing core is located in the airflow channel, so The airflow channel penetrates through the surface of the suction nozzle to form a nozzle mouth for smoking smoke, the heating surface is arranged towards the suction mouth mouth, and the installation surface is arranged away from the suction mouth mouth.
  • An electronic atomization device includes a power source and the above atomizer, the power source includes a conductor for electrical connection with the electrode body, and the conductor is located on the side where the installation surface is located.
  • FIG. 1 is a schematic cross-sectional structure diagram of an atomizer provided by an embodiment
  • Fig. 2 is the three-dimensional structure schematic diagram of the first example atomizing core in the atomizer shown in Fig. 1;
  • Fig. 3 is the partial three-dimensional structure schematic diagram of the atomizing core shown in Fig. 2 after removing the matrix;
  • Fig. 4 is the three-dimensional structure schematic diagram of the matrix in the atomizing core shown in Fig. 2;
  • Fig. 5 is the three-dimensional schematic diagram of the second example atomizing core in the atomizer shown in Fig. 1;
  • Fig. 6 is the partial three-dimensional structure schematic diagram of the atomizing core shown in Fig. 5 after removing the matrix;
  • Fig. 7 is the three-dimensional structure schematic diagram of the matrix in the atomizing core shown in Fig. 5;
  • FIG. 8 is a schematic three-dimensional structure diagram of a third example atomizing core in the atomizer shown in FIG. 1;
  • FIG. 9 is a schematic three-dimensional structure diagram of a fourth example atomizing core in the atomizer shown in FIG. 1;
  • FIG. 10 is a schematic three-dimensional structural diagram of the atomizing core shown in FIG. 9 from another viewing angle.
  • an electronic atomization device provided by an embodiment of the present invention includes an atomizer 10 and a power supply.
  • the atomizer 10 includes a suction nozzle 20 and an atomizing core 30 , and a liquid storage cavity 21 isolated from each other is opened in the suction nozzle 20 And the airflow channel 22, the liquid storage chamber 21 is used for storing liquid.
  • the atomizing core 30 is located in the airflow channel 22 , the atomizing core 30 absorbs the liquid in the liquid storage chamber 21 to buffer, and atomizes the liquid to form a smoke that can be drawn, and the smoke is essentially an aerosol.
  • the airflow channel 22 runs through the surface (upper end surface) of the suction nozzle 20 to form the suction nozzle port 22c.
  • the power supply includes a conductor 40, the conductor 40 can be a conductive column with a columnar structure, and the conductor 40 is electrically connected to the atomizing core 30, so that the power supply supplies power to the entire atomizing core 30 through the conductor 40, and the atomizing core 30 converts electrical energy into Thermal energy required for liquid atomization.
  • the atomizing core 30 includes a base body 100 , a heating body 200 , an electrode body 300 and a connecting body 400 .
  • the base body can be made of porous glass, porous ceramics, honeycomb ceramics, etc.
  • the base body 100 is a porous ceramic body, that is, the base body 100 is made of porous ceramic materials, for example, the base body 100 can be made of alumina, silicon oxide, silicon nitride It is made of materials such as , silicate or silicon carbide, so that there are a large number of micropores in the matrix 100 and a certain porosity.
  • the porosity of the substrate 100 may range from 20% to 80%, for example, the specific value of the porosity may be 20%, 40%, 50%, or 80%.
  • the average pore size of the micropores in the substrate 100 may range from 20 ⁇ m to 55 ⁇ m, for example, the specific value of the pore size is 20 ⁇ m, 30 ⁇ m, 45 ⁇ m, or 55 ⁇ m.
  • the base body 100 can be formed by a process such as grouting or powder pressing, and the shape of the base body 100 can be cylindrical or prismatic. 100 may be cuboid.
  • the substrate 100 When the substrate 100 is in contact with the liquid in the liquid storage chamber 21, the substrate 100 forms capillary action due to the existence of micropores, and the liquid can gradually penetrate into the interior of the substrate 100 through the capillary action, so that the substrate 100 has a certain buffering function for the liquid.
  • the flow resistance of the liquid when permeating in the matrix 100 is inversely proportional to the porosity and the average pore size of the micropores.
  • the matrix 100 made of porous ceramic material has good high temperature resistance properties, which prevents the liquid stored in the matrix 100 from chemically reacting with the matrix 100 under high temperature conditions, so that the liquid is not involved in unnecessary chemical reactions and is wasted. Avoid all kinds of harmful substances that are incidental to chemical reactions.
  • the base 100 has a heating surface 110 and a mounting surface 120 .
  • the heating surface 110 can absorb heat to increase the temperature, thereby atomizing the liquid, while the mounting surface 120 cannot The liquid is atomized, so the heating surface 110 and the installation surface 120 are two different surfaces.
  • the heating surface 110 and the mounting surface 120 are arranged at intervals along the extending direction of the airflow channel 22 (ie, the vertical direction), and the directions of the heating surface 110 and the mounting surface 120 are just opposite.
  • the heating surface 110 faces the suction nozzle 22c
  • the installation face 120 faces away from the suction nozzle 22c and faces the power source, that is, the installation face 120 faces downward.
  • the heating surface 110 is the upper surface of the base body 100
  • the mounting surface 120 is the lower surface of the base body 100 .
  • the heating surface 110 is still disposed upward
  • the installation surface 120 is located below the heating surface 110
  • the installation surface 120 and the heating surface 110 are oriented in the same direction, and both are arranged upward.
  • both can also be set downward.
  • the heating element 200 may be a metal heating element or an alloy heating element, that is, the heating element 200 may be made of a metal material or an alloy material.
  • the alloy material can be selected from iron-chromium alloy, iron-chromium-aluminum alloy, iron-chromium-nickel alloy, chromium-nickel alloy, titanium alloy, stainless steel alloy or Karma alloy.
  • the heating body 200 can be formed by die stamping, casting, mechanical weaving, chemical etching or screen printing.
  • the base body 100 can be integrally formed with the heating body 200, for example, the two can obtain an integrally formed structure by means of debinding and sintering.
  • the base body 100 and the heating body 200 can also be formed separately, for example, the base body 100 is formed first, and then the heating body 200 and the base body 100 are connected by debinding and sintering by screen printing.
  • the heating body 200 can be a long sheet-like structure, and the heating body 200 can be bent to form various regular or irregular patterns, for example, the heating body 200 is S-shaped.
  • the heating body 200 is arranged on the heating surface 110, for example, the heating body 200 is directly attached to the heating surface 110, so that the heating body 200 protrudes from the heating surface 110 to a certain height.
  • the groove is formed by a part of the heating surface 110 with a predetermined depth, and the heating body 200 is embedded in the groove 111, so that the upper surface of the heating body 200 can protrude from the heating surface 110 to a certain height, and the upper surface of the heating body 200 can also be Just flush with the heating surface 110 .
  • the value range of the thickness of the heating body 200 may be 0.01 mm to 2.00 mm, for example, the specific value of the thickness may be 0.01 mm, 0.03 mm, 0.1 mm, or 2.00 mm.
  • the value range of the width of the heating body 200 is 0.05mm to 3mm, for example, the specific value of the width may be 0.05mm, 0.06mm, 0.25mm, or 30mm.
  • the electrode body 300 is electrically connected to the heating body 200 , and at the same time, the electrode body 300 is also electrically connected to the conductor 40 .
  • the resistivity of the electrode body 300 is significantly smaller than that of the heating body 200 , so that the electrode body 300 has excellent electrical conductivity.
  • the electrode body 300 may have a sheet-like structure, and the electrode body 300 is disposed on the installation surface 120 .
  • the heating body 200 is directly attached to the heating surface 110 , so that the heating body 200 protrudes from the heating surface 110 by a certain height.
  • the installation surface 120 A sinking groove can be set on the upper surface, the sinking groove is formed by a part of the mounting surface 120 with a set depth, and the electrode body 300 is embedded in the groove 111, so that the upper surface of the electrode body 300 can protrude from the mounting surface 120 by a certain height, and also The upper surface of the electrode body 300 may be just flush with the mounting surface 120 .
  • the number of electrode bodies 300 is two, and one electrode body 300 is used as a positive electrode, and the other electrode body 300 is used as a negative electrode.
  • the resistivity of the electrode body 300 is significantly smaller than that of the heating body 200.
  • the heating body 200 When the power supply supplies power to the heating body 200, the heating body 200 generates a large amount of heat, and the heating surface 110 absorbs the heating body 200. The heat generated is high enough to atomize the liquid.
  • the heat generated by the electrode body 300 is negligible, so the mounting surface 120 cannot generate a high temperature that can atomize the liquid.
  • the electrode body 300 occupies a part of the heating surface 110, resulting in the reduction of the effective atomization area on the heating surface 110 that can atomize the liquid, that is, The effective atomization area is compressed, thereby reducing the amount of liquid atomized by the heating surface 110 per unit time, and reducing the concentration of smoke; it also causes the heating surface 110 to generate smoke at a slower rate, thereby affecting the response of the atomizing core 30 to suction sensitivity.
  • the electrode body 300 and the conductive column can absorb the heat on the heating surface 110, resulting in the connection failure of the electrode body 300 and the conductive body 40 due to high temperature, which affects the service life of the atomizing core 30; also causes the heating surface 110 to exist. A large amount of heat is lost, thereby affecting the thermal efficiency of the heating surface 110 .
  • the heating body 200 is arranged on the heating surface 110, and the electrode body 300 is arranged on the installation surface 120, that is, the heating body 200 and the electrode body 300 are arranged on different surfaces of the base body 100 to prevent the electrode body 300 and the heating
  • the bodies 200 are all located on the same heating surface 110 .
  • This can prevent the electrode body 300 from encroaching on a part of the heating surface 110, thereby ensuring that the heating surface 110 maintains an effective atomization area sufficient to atomize the liquid, increasing the atomization amount of the liquid by the heating surface 110 per unit time, and increasing the amount of smoke. It also increases the speed at which the heating surface 110 generates smoke, thereby improving the sensitivity of the atomizing core 30 to the suction response.
  • connection failure of the electrode body 300 and the conductive column due to absorbing the heat of the heating surface 110 can be prevented, the service life of the atomizing core 30 can be improved, and the heat loss of the heating surface 110 can be reduced to improve the thermal efficiency of the heating surface 110 .
  • the substrate 100 further includes a liquid absorbing surface 131, and the liquid absorbing surface 131 is connected between the heating surface 110 and the mounting surface 120, when the heating surface 110 is the upper surface of the substrate 100 and When the mounting surface 120 is the lower surface of the base body 100 , the liquid absorbing surface 131 is actually a part of the side surface 130 of the base body 100 .
  • the liquid-absorbing surface 131 is used for contacting the liquid in the liquid storage chamber 21 , and the liquid in contact with the liquid-absorbing surface 131 can penetrate into the interior of the substrate 100 under capillary action.
  • the connecting body 400 is connected between the electrode body 300 and the heating body 200 , the number of the connecting body 400 is two, and the upper end of one connecting body 400 is electrically connected to one end of the heating body 200
  • the lower end is electrically connected to one of the electrode bodies 300
  • the upper end of the other connecting body 400 is electrically connected to the other end of the heating body 200 and the lower end is electrically connected to the other electrode body 300 .
  • the connecting body 400 and the heating body 200 can be made of the same material, and the two can also be integrally formed.
  • the base body 100 is also provided with a through hole 101 .
  • the through hole 101 extends along the setting direction and penetrates the heating surface 110 and the installation surface 120 at the same time. internal.
  • the connecting body 400 Since the connecting body 400 is disposed inside the base body 100, on the one hand, the installation stability of the connecting body 400 can be improved, and the heating body 200 can be firmly fixed on the heating surface 110; The high connection strength ensures the stable reliability of both the connecting body 400 and the electrode body 300 in terms of mechanical connection and electrical connection.
  • the connecting body 400 when the connecting body 400 is energized, the connecting body 400 will generate a certain amount of heat, which will have a certain preheating effect on the base body 100, and the viscosity of the liquid stored in the base body 100 will decrease due to the absorption of heat, thereby improving the liquid in the base body.
  • the fluidity inside 100 is to reduce the flow resistance of the liquid, so that the liquid can quickly reach the heating surface 110 from the liquid absorbing surface 131 through the interior of the base 100 to be atomized, avoiding the phenomenon of dry burning, and ensuring that the entire atomizing core 30 can meet the high requirements. Atomization requirements for viscous liquids.
  • the distance between the connecting body 400 and the liquid absorbing surface 131 is smaller than the distance between the connecting body 400 and the geometric center of the base body 100 .
  • the connecting body 400 is disposed closer to the liquid absorbing surface 131 .
  • the area of the base body 100 close to the liquid absorbing surface 131 can quickly absorb heat to improve the fluidity of the liquid and ensure that the liquid can quickly enter the interior of the base body 100 from the liquid storage cavity 21 through the liquid absorbing surface 131 .
  • the connecting body 400 and the heating body 200 can also be made of different materials respectively. Referring to FIG. 1
  • the entire atomizing core 30 divides the airflow channel 22 into two parts, and the part of the airflow channel 22 located above the atomizing core 30 is denoted as The upper channel 22a, the part of the airflow channel 22 located below the atomizing core 30 is denoted as the lower channel 22b. Also, the electrical conductor 40 is also located in the lower channel 22b.
  • the smoke generated on the heating surface 110 will first enter the lower channel 22b, and then pass through the part of the airflow channel 22 between the atomizing core 30 and the suction nozzle 20 to enter the upper channel 22a, and finally the smoke will pass through the upper channel 22a.
  • the mouthpiece 22c is absorbed by the user. This design pattern can be referred to simply as the "downward fog pattern”.
  • the above-mentioned "downward atomization mode" has at least the following four defects: First, since the smoke is first discharged into the lower channel 22b, and the conductor 40 occupies part of the space in the lower channel 22b, the total space of the lower channel 22b is compressed. And decrease, which is not conducive to the full atomization of the liquid. Second, the smoke discharged into the lower channel 22b will come into contact with the conductor 40, and the conductor 40 will hinder the circulation and transmission of the smoke, affecting the transmission speed of the smoke in the airflow channel 22.
  • the third is that the smoke generated on the heating surface 110 has a longer path to reach the suction nozzle 22c, which increases the probability of the smoke condensing in the airflow channel 22 to form large droplets, thereby reducing the concentration due to smoke loss. It can also cause large particle droplets to block the gas flow channel 22 or leak into the power supply to erode it. To reduce smoke solidification, there will be higher requirements on the structural design of the entire airflow channel 22, thereby increasing the design and manufacturing costs of the entire electronic atomization device. Fourth, the liquid tends to accumulate on the heating surface 110 under the action of gravity. When the viscosity of the liquid itself is low, the liquid collected on the heating surface 110 will drip off and leave the atomizing core 30, thereby causing the liquid leakage.
  • the heating surface 110 is disposed toward the nozzle opening 22c (ie, is disposed upward), and the installation surface 120 is disposed away from the suction nozzle opening 22c and is disposed toward the power source (ie, disposed downward), so that the The conductor 40 is located on the side where the mounting surface 120 is located, that is, the conductor 40 is located in the lower channel 22b.
  • the smoke generated on the heating surface 110 directly enters the upper channel 22a instead of being discharged to the lower channel 22b.
  • This design pattern can be referred to simply as the "up-atomization pattern”.
  • the above-mentioned "upward atomization mode" has at least the following four beneficial effects: First, the smoke is directly discharged into the upper channel 22a, and the conductor 40 located in the lower channel 22b obviously does not occupy the space of the upper channel 22a, so that the upper channel 22a has no space. The space is large enough to facilitate adequate atomization of the liquid. Second, the smoke is directly discharged into the upper channel 22a, and the conductor 40 located in the lower channel 22b obviously does not come into contact with the smoke in the upper channel 22a, which effectively avoids the obstruction of the smoke by the conductor 40 and improves the smoke in the airflow channel 22. flow velocity.
  • the smoke generated on the heating surface 110 directly reaches the suction mouth 22c through the upper passage 22a to be absorbed by the user, eliminating the flow path of the smoke from the lower passage 22b to the upper passage 22a, thereby reducing the smoke reaching the suction mouth 22c.
  • the length of the flow path reduces the probability of smoke condensing to form large particle droplets in the airflow channel 22, preventing the concentration reduction due to smoke loss, and effectively preventing the large particle droplets from blocking the airflow channel 22 or leaking to the power supply to prevent it. constitute erosion.
  • the requirements on the structural design of the airflow channel 22 can be appropriately reduced, thereby reducing the design and manufacturing costs of the entire electronic atomization device.
  • the liquid gathers upward to the heating surface 110 against gravity, thereby reducing the possibility of leakage caused by the liquid dripping off the atomizing core 30 .
  • the base body 100 is further provided with an air guide hole 102 , and the air guide hole 102 penetrates both the mounting surface 120 and the heating surface 110 .
  • the gas can enter the upper passage 22a from the lower channel 22b through the air guide hole 102, so that the gas can carry the smoke to the mouthpiece 22c.
  • the diameter of the air guide hole 102 ranges from 0.05 mm to 5.00 mm.
  • the specific value of the diameter of the air guide hole 102 may be 0.05 mm, 1 mm, 4 mm, or 5 mm.
  • the number of the air guide holes 102 may be one or more, and the air guide holes 102 may be circular holes, elliptical holes, regular polygon holes, or the like.
  • the installation surface 120 and the heating surface 110 may be two planes parallel to each other. Of course, the installation surface 120 and the heating surface 110 may also be curved surfaces.
  • the mounting surface 120 is provided with a groove 111 , and the groove 111 is recessed toward the heating surface 110 to a predetermined depth.
  • the groove 111 By arranging the groove 111 , the total weight of the atomizing core 30 can be reduced, and the flow resistance of the liquid in the matrix 100 can also be reduced, so that the liquid can quickly reach the heating surface 110 from the liquid absorbing surface 131 .
  • the base body 100 may further include a base portion 140 and a boss portion 150.
  • the base portion 140 has a stepped surface 141, the mounting surface 120 is located on the base portion 140, and the mounting surface 120 and the stepped surface 141 face oppositely. , that is, the step surface 141 is arranged upward, and the installation surface 120 is arranged downward.
  • the boss portion 150 is connected to the stepped surface 141 , the boss portion 150 protrudes a certain height relative to the stepped surface 141 , and the heating surface 110 is located on the boss portion 150 , so that the heating surface 110 is disposed upward.
  • both the atomizer 10 and the power source are detachably connected.
  • the atomizer 10 is a disposable consumable, the used atomizer 10 can be easily unloaded from the power source and discarded separately, and the power source can be used in conjunction with a new atomizer 10 to achieve recycling.

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Abstract

一种雾化芯(30)，包括：发热体(200)，发热体(200)用于产生热量；电极体(300)，电极体(300)与发热体(200)电性连接；及基体(100)，基体(100)用于缓存液体并具有安装面(120)和与安装面(120)间隔设置的发热面(110)，电极体(300)设置在安装面(120)上，发热体(200)设置在发热面(110)上，发热面(10)吸收发热体(200)产生的热量并能够将液体雾化。

Description

雾化芯、雾化器及电子雾化装置 技术领域
本发明涉及雾化技术领域，特别是涉及一种雾化芯、雾化器及电子雾化装置。
背景技术
烟草燃烧的烟雾中存在数十种致癌物质，例如焦油会对人体健康会产生非常大的危害，而且烟雾弥漫在空气中形成二手烟，周围的人群吸入后也会对身体造成伤害，因此，大多数公共场合都明令禁止吸烟。而电子雾化装置具有与普通香烟相似的外观和口感，但通常不含有香烟中的焦油、悬浮微粒等其他有害成分，因此电子雾化装置普遍用作香烟的替代品。
电子雾化装置通常采用雾化芯对液体进行雾化，从而形成供用户抽吸的气溶胶(烟雾)，雾化芯与电源之间通过引线或顶针实现电性连接，但是，为了确保引线或顶针跟雾化芯连接的稳定性和可靠性，会压缩整个发热面的总面积，从而导致发热面利用率低，不利于发热体在发热面上的布局，最终影响整个雾化芯的雾化效果。
发明内容
本发明解决的一个技术问题是如何改善雾化芯的雾化效果。
一种电子雾化装置的雾化芯，所述雾化芯包括：
发热体，所述发热体用于产生热量；
电极体，所述电极体与所述发热体电性连接；及
基体，所述基体用于缓存液体并具有安装面和与所述安装面间隔设置的发热面，所述电极体设置在所述安装面上，所述发热体设置在所述发热面上，所述发热面吸收所述发热体产生的热量并能够将液体雾化。
一种雾化器，所述雾化器包括吸嘴和上述中任一项所述的雾化芯，所述吸嘴内开设有气流通道，所述雾化芯位于所述气流通道内，所述气流通道贯穿所述吸嘴的表面而形成用于抽吸烟雾的吸嘴口，所述发热面朝向所述吸嘴口设置，所述安装面背向所述吸嘴口设置。
一种电子雾化装置，包括电源和上述的雾化器，所述电源包括用于与所述电极体电性连接的导电体，所述导电体位于所述安装面所处的一侧。
本发明的一个或多个实施例的细节在下面的附图和描述中提出。本发明的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为一实施例提供的雾化器的剖面结构示意图；
图2为图1所示雾化器中第一示例雾化芯的立体结构示意图；
图3为图2所示雾化芯去除基体后的局部立体结构示意图；
图4为图2所示雾化芯中基体的立体结构示意图；
图5为图1所示雾化器中第二示例雾化芯的立体结构示意图；
图6为图5所示雾化芯去除基体后的局部立体结构示意图；
图7为图5所示雾化芯中基体的立体结构示意图；
图8为图1所示雾化器中第三示例雾化芯的立体结构示意图；
图9为图1所示雾化器中第四示例雾化芯的立体结构示意图；
图10为图9所示雾化芯在另一视角下的立体结构示意图。
具体实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。 附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“内”、“外”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
参阅图1，本发明一实施例提供的电子雾化装置包括雾化器10和电源，雾化器10包括吸嘴20和雾化芯30，吸嘴20内开设有相互隔离的储液腔21和气流通道22，储液腔21用于存储液体。雾化芯30位于该气流通道22中，雾化芯30吸收以缓存储液腔21中的液体，并对液体进行雾化而形成可抽吸的烟雾，该烟雾实质为一种气溶胶。气流通道22贯穿吸嘴20的表面(上端面)而形成吸嘴口22c，当液体通过雾化芯30雾化形成排放至气流通道22中的烟雾时，用户可以接触该吸嘴口22c而对气流通道22中的烟雾进行抽吸。电源包括导电体40，导电体40可以为柱状结构的导电柱，导电体40与雾化芯30电性连接，使得电源通过导电体40对整个雾化芯30供电，雾化芯30将电能转化为液体雾化所需的热能。
同时参阅图2、图3和图4，在一些实施例中，雾化芯30包括基体100、发热体200、电极体300和连接体400。基体可为多孔玻璃、多孔陶瓷、蜂窝陶瓷等制成，本实施例中基体100为多孔陶瓷体，即基体100采用多孔陶瓷材料制成，例如基体100可以采用氧化铝、氧化硅、氮化硅、硅酸盐或碳化硅等材料制成，这样可以使得基体100内存在大量的微孔而具有一定的孔隙率，孔隙率定义为物体中孔隙的体积与材料在自然状态下总体积的百分比，该基体100的孔隙率的取值范围可以为20％～80％，例如孔隙率的具体取值可以为20％、40％、50％或80％等。基体100中微孔的平均孔径的取值范围可以为20μm～55μm，例如孔径的具体取值为20μm、30μm、45μm或55μm等。 基体100可以采用注浆成型或粉体压制成型等工艺进行成型，基体100的形状可以为圆柱状或棱柱状等，同时参阅图5、图6和图7，当基体100为棱柱状时，基体100可以为长方体状。
当基体100与储液腔21中的液体接触时，基体100因微孔的存在而形成毛细作用，液体通过该毛细作用可以逐渐渗透至基体100内部，使得基体100对液体具有一定的缓存功能。液体在基体100内渗透时的流动阻力跟孔隙率和微孔的平均孔径均成反比，基体100的孔隙率和微孔的平均孔径越高时，液体在基体100中的流动阻力越小。并且多孔陶瓷材料制成的基体100具有良好的耐高温特性，防止缓存于基体100中的液体在高温条件下与基体100产生化学反应，使得液体因不参与不必要的化学反应而产生浪费，同时避免化学反应附带产生的各种有害物质。
同时参阅图1、图2和图5，在一些实施例中，基体100具有发热面110和安装面120，发热面110能够吸收热量而升温，从而对液体进行雾化，安装面120则无法对液体进行雾化，故发热面110和安装面120为两个不相同的表面。发热面110和安装面120沿气流通道22的延伸方向(即竖直方向)间隔设置，并且使得发热面110与安装面120两者的朝向刚好相反，此时，发热面110朝向吸嘴口22c而背向电源设置，即发热面110朝上设置；而安装面120背向吸嘴口22c而朝向电源设置，即安装面120朝下设置。通俗而言，发热面110为基体100的上表面，安装面120为基体100的下表面。在其他实施例中，例如，参阅图8，发热面110依然朝上设置，安装面120位于发热面110的下方，安装面120与发热面110朝向相同，两者均朝上设置。当然两者还可以均朝下设置。
发热体200可以为金属发热体或合金发热体，即发热体200可以采用金属材料制成，也可以采用合金材料制成。合金材料可以选择铁铬合金、铁铬铝合金、铁铬镍合金、铬镍合金、钛合金、不锈钢合金或卡玛合金等。发热体200可以采用模具冲压、铸造、机械编织、化学蚀刻或丝网印刷等工艺制作成型。基体100可以与发热体200一体成型，例如两者通过排胶和烧结的 方式获得一体成型结构。当然，基体100和发热体200也可以采用分体成型的方式，例如先成型基体100，再通过丝网印刷方式，排胶和烧结使得发热体200与基体100连接。
发热体200可以为长条形的片状结构，发热体200能够弯曲形成各种规则或非规则图形，例如发热体200为S型等。发热体200设置在发热面110上，例如发热体200直接贴附在发热面110上，使得发热体200凸出发热面110一定的高度，又如，发热面110上可以开设沉槽，该沉槽由发热面110的一部分凹陷设定深度形成，发热体200则嵌设在该凹槽111，可以使得发热体200的上表面凸出发热面110一定高度，也可以使得发热体200的上表面与发热面110刚好平齐。发热体200的厚度的取值范围可以为0.01mm至2.00mm，例如厚度的具体取值可以为0.01mm、0.03mm、0.1mm或2.00mm等。发热体200的宽度的取值范围为0.05mm至3mm，例如宽度的具体取值可以为0.05mm、0.06mm、0.25mm或30mm等。
电极体300与发热体200电性连接，同时电极体300也与导电体40电性连接，电源依次通过导电体40和电极体300对发热体200供电。电极体300的电阻率显著小于发热体200的电阻率，使得电极体300具有优良的导电性能。电极体300可以片状结构，电极体300设置在安装面120上，例如发热体200直接贴附在发热面110上，使得发热体200凸出发热面110一定的高度，又如，安装面120上可以开设沉槽，该沉槽由安装面120的一部分凹陷设定深度形成，电极体300则嵌设在该凹槽111，可以使得电极体300的上表面凸出安装面120一定高度，也可以使得电极体300的上表面与安装面120刚好平齐。电极体300的数量为两个，其中一个电极体300作为正极使用，另外一个电极体300作为负极使用。
由于发热体200与电极体300串联连接，电极体300的电阻率显著小于发热体200的电阻率，当电源对发热体200供电时，发热体200产生大量的热量，发热面110吸收发热体200产生的热量而升温，该温度足以能够对液体进行雾化。而电极体300产生的热量可以忽略不计，故安装面120无法产 生能够对液体进行雾化的高温。
假如将发热体200和电极体300同时设置在发热面110上，一方面使得电极体300占用发热面110的部分区域，导致发热面110上能够对液体进行雾化的有效雾化区域减少，即对有效雾化区域进行压缩，从而减少单位时间内发热面110对液体的雾化量，减少烟雾的浓度；也导致发热面110产生烟雾的速度较慢，从而影响雾化芯30对抽吸响应的灵敏度。另一方面使得电极体300和导电柱能吸收发热面110上的热量，导致电极体300和导电体40因高温而引发连接失效现象，影响雾化芯30的使用寿命；也导致发热面110存在大量的热损失，从而影响发热面110的热效率。
而上述实施例将发热体200设置在发热面110上，并将电极体300设置在安装面120上，即将发热体200和电极体300设置在基体100的不同表面上，防止电极体300和发热体200均位于同一个发热面110上。这样能够避免电极体300侵占发热面110的部分区域，从而保证发热面110维持足够能对液体进行雾化的有效雾化区域，提高单位时间内发热面110对液体的雾化量，提高烟雾的浓度；也提高发热面110产生烟雾的速度，进而提高雾化芯30对抽吸响应的灵敏度。并且，还可以防止电极体300和导电柱因吸收发热面110的热量而导致的连接失效，提高雾化芯30的使用寿命，同时减少发热面110的热量损失以提高发热面110的热效率。
同时参阅图4和图7，在一些实施例中，基体100还包括吸液面131，吸液面131连接在发热面110和安装面120之间，当发热面110为基体100的上表面且安装面120为基体100的下表面时，吸液面131实际为基体100的侧表面130的一部分。参阅图1，吸液面131用于与储液腔21中的液体接触，与吸液面131接触的液体可以在毛细作用下渗透至基体100的内部。
同时参阅图2、图3和图4，连接体400连接在电极体300和发热体200之间，连接体400的数量为两个，其中一个连接体400的上端与发热体200的一端电性连接且其下端与其中一个电极体300电性连接，另外一个连接体400的上端与发热体200的另一端电性连接且其下端与另外一个电极体300 电性连接。连接体400可以与发热体200采用相同的材料，两者还可以一体成型。基体100上还开设有通孔101，该通孔101沿设置方向延伸并同时贯穿发热面110和安装面120，连接体400则与安装通孔101配合，使得整个连接体400穿设在基体100的内部。
由于连接体400穿设在基体100的内部，一方面可以提高连接体400安装的稳定性，可以使得发热体200牢牢固定在发热面110上；也可以提高连接体400与电极体300之间的连接强度，确保连接体400、电极体300两者在机械连接和电性连接两方面上的稳定可靠性。另一方面当连接体400通电时，连接体400会产生一定的热量，从而对基体100起到一定的预热作用，缓存在基体100中的液体因吸收热量而粘度降低，进而改善液体在基体100内部的流动性，即降低液体的流动阻力，使得液体能够从吸液面131经基体100内部快速抵达至发热面110雾化，避免产生干烧现象，确保整个雾化芯30能够满足对高粘度液体的雾化要求。
进一步地，连接体400与吸液面131之间的间距小于连接体400与基体100的几何中心之间的间距，通俗而言，连接体400更加靠近吸液面131设置。此时，使得基体100靠近吸液面131的区域能快速吸收热量以改善液体的流动性，确保液体从储液腔21经吸液面131快速进入基体100内部。
在其他实施例中，连接体400与发热体200也可以分别选择不同的材料，参阅图8，连接体400还可以不穿设在基体100内部，而是直接附着在基体100的外表面上。
参阅图1，假如将发热面110背向吸嘴口22c而朝向电源设置，此时，整个雾化芯30将气流通道22分隔为两部分，气流通道22位于雾化芯30上方的部分记为上方通道22a，气流通道22位于雾化芯30下方的部分记为下方通道22b。并且，导电体40也位于下方通道22b中。当发热体200工作时，发热面110上产生的烟雾将首先进入下方通道22b中，然后经过气流通道22位于雾化芯30和吸嘴20之间的部分以进入上方通道22a，最终使得烟雾由吸嘴口22c被用户吸收。该设计模式可以简称为“向下雾化模式”。
上述“向下雾化模式”会至少存在以下四个缺陷：一是由于烟雾首先排放至下方通道22b中，而导电体40占用下方通道22b中的部分空间，使得下方通道22b的总空间被压缩而减少，导致不利于液体的充分雾化。二是排放至下方通道22b中的烟雾将与导电体40接触，导电体40会对烟雾的流通和传输产生阻碍作用，影响烟雾的在气流通道22中的传输速度。三是发热面110上产生的烟雾抵达至吸嘴口22c所流经的路径较长，使得烟雾在气流通道22中凝结形成大颗粒液滴的概率增大，从而因烟雾损耗而导致浓度降低，也会导致大颗粒液滴堵塞气流通道22或泄漏至电源以对其构成侵蚀。如需减少烟雾凝固，则在整个气流通道22的结构设计上将存在更高的要求，从而提高整个电子雾化装置的设计和制造成本。四是液体在重力的作用下易于趋向聚集在发热面110上，在液体自身粘度较低的情况下，会导致聚集在发热面110上的液体滴落而脱离雾化芯30，从而引发液体的泄漏。
参阅图1，而在上述实施例中，发热面110朝向吸嘴口22c设置(即朝上设置)、且安装面120背向吸嘴口22c而朝向电源设置(即朝下设置)，将使得导电体40位于安装面120所处的一侧，即导电体40位于下方通道22b中。当发热体200工作时，发热面110上产生的烟雾直接进入上方通道22a中，而不是排放至下方通道22b。该设计模式可以简称为“向上雾化模式”。
上述“向上雾化模式”至少存在如下四个有益效果：一是烟雾直接排放至上方通道22a中，位于下方通道22b中的导电体40显然不会占用上方通道22a的空间，使得上方通道22a的空间足够大而有利于液体的充分雾化。二是烟雾直接排放至上方通道22a中，位于下方通道22b中的导电体40显然不会与上方通道22a中的烟雾形成接触，有效避免导电体40对烟雾的阻碍，提高烟雾在气流通道22中的流通速度。三是发热面110上产生烟雾直接经上方通道22a抵达至吸嘴口22c以被用户吸收，消除了烟雾从下方通道22b抵达至上方通道22a的流动路径，从而减少烟雾抵达至吸嘴口22c所流经的路径长度，使得烟雾在气流通道22中凝结形成大颗粒液滴的概率降低，防止因烟雾损耗而导致浓度降低，也有效避免大颗粒液滴堵塞气流通道22或泄漏至电 源以对其构成侵蚀。同时可以适当降低气流通道22在结构设计上的要求，从而降低整个电子雾化装置的设计和制造成本。四是液体克服重力向上聚集至发热面110，从而减少液体滴落脱离雾化芯30而引发泄漏的可能。
参阅图1和图2，在一些实施例中，基体100上还开设有导气孔102，该导气孔102同时贯穿安装面120和发热面110。当用户在吸嘴口22c抽吸时，气体可以从下方通道22b经该导气孔102进入上方通道22a中，以便气体携带烟雾抵达吸嘴口22c。导气孔102的口径的取值范围为0.05mm至5.00mm，例如导气孔102的口径的具体取值可以为0.05mm、1mm、4mm或5mm等。导气孔102的数量可以为一个或多个，导气孔102可以为圆孔、椭圆孔或正多边形孔等。安装面120和发热面110可以为相互平行的两个平面，当然，安装面120和发热面110还可以且曲面。
在一些实施例中，安装面120上开设有凹槽111，该凹槽111朝发热面110凹陷设定深度。通过设置该凹槽111，既可以减轻雾化芯30的总重量，也可以降低液体在基体100内的流动阻力，可以使得液体从吸液面131快速抵达至发热面110。
同时参阅图9和图10，基体100还可以包括基础部140和凸台部150，基础部140具有台阶面141，安装面120位于基础部140上，安装面120与台阶面141两者朝向相反，即台阶面141朝上设置，安装面120朝下设置。凸台部150与台阶面141连接，凸台部150相对台阶面141凸出一定的高度，发热面110位于凸台部150上，使得发热面110朝上设置。当基体100安装在吸嘴20上时，台阶面141和凸台部150可以对整个基体100提供良好的限位作用，提高雾化芯30安装的稳定可靠性。
在一些实施例中，雾化器10和电源两者可拆卸连接。当雾化器10为一次性使用的消耗品时，可以很方便地将使用完毕的雾化器10从电源上卸载并单独丢弃，电源可以与新的雾化器10搭配使用而实现循环利用。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这 些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种电子雾化装置的雾化芯，其特征在于，所述雾化芯包括：
    发热体，所述发热体用于产生热量；
    电极体，所述电极体与所述发热体电性连接；及
    基体，所述基体用于缓存液体并具有安装面和与所述安装面间隔设置的发热面，所述电极体设置在所述安装面上，所述发热体设置在所述发热面上，所述发热面吸收所述发热体产生的热量并能够将液体雾化。
  2. 根据权利要求1所述的雾化芯，其特征在于，所述安装面与所述发热面两者朝向相反。
  3. 根据权利要求1或2所述的雾化芯，其特征在于，还包括连接体，所述基体内开设有同时贯穿所述安装面和所述发热面的通孔，所述连接体穿设在所述通孔中，所述连接体的一端与所述发热体电性连接，所述连接体的另一端与所述电极体电性连接。
  4. 根据权利要求3所述的雾化芯，其特征在于，所述基体还包括用于吸收液体的吸液面，所述吸液面连接在所述安装面和所述发热面之间，所述连接体与所述吸液面之间的间距小于所述连接体与所述基体的几何中心之间的间距。
  5. 根据权利要求3所述的雾化芯，其特征在于，所述连接体与所述发热体采用相同材料制成。
  6. 根据权利要求2所述的雾化芯，其特征在于，所述基体上还开设有导气孔，所述导气孔同时贯穿所述安装面和所述发热面。
  7. 根据权利要求6所述的雾化芯，其特征在于，所述导气孔的口径为0.05mm至5.00mm。
  8. 根据权利要求2所述的雾化芯，其特征在于，所述安装面上开设有朝所述发热面凹陷设定深度的凹槽。
  9. 根据权利要求2所述的雾化芯，其特征在于，所述基体包括基础部和凸台部，所述基础部具有台阶面，所述安装面位于所述基础部上并与所述台 阶面朝向相反，所述凸台部与所述台阶面连接并相对所述台阶面凸出，所述发热面位于所述凸台部上。
  10. 根据权利要求2所述的雾化芯，其特征在于，所述安装面与所述发热面两者为相互平行的平面。
  11. 根据权利要求1所述的雾化芯，其特征在于，所述电极体为片状结构，所述电极体直接附着在所述发热面上，或者所述安装面上凹陷形成有沉槽，所述电极体嵌设在所述沉槽中。
  12. 根据权利要求1所述的雾化芯，其特征在于，所述发热体为条形片状结构，所述发热体的厚度为0.01mm至2.00mm，所述发热体的宽度为0.05mm至3mm。
  13. 根据权利要求1所述的雾化芯，其特征在于，所述基体为多孔陶瓷体，所述发热体为金属发热体或合金发热体。
  14. 根据权利要求1所述的雾化芯，其特征在于，所述发热体直接附着在所述发热面上，或者所述发热面上凹陷形成有沉槽，所述发热体嵌设在所述沉槽中。
  15. 根据权利要求1所述的雾化芯，其特征在于，所述基体与所述发热体两者一体成型。
  16. 一种雾化器，其特征在于，所述雾化器包括吸嘴和权利要求1至15中任一项所述的雾化芯，所述吸嘴内开设有气流通道，所述雾化芯位于所述气流通道内，所述气流通道贯穿所述吸嘴的表面而形成用于抽吸烟雾的吸嘴口，所述发热面朝向所述吸嘴口设置，所述安装面背向所述吸嘴口设置。
  17. 一种电子雾化装置，其特征在于，包括电源和权利要求16所述的雾化器，所述电源包括用于与所述电极体电性连接的导电体，所述导电体位于所述安装面所处的一侧。
  18. 根据权利要求17所述的电子雾化装置，其特征在于，所述雾化器与所述电源可拆卸连接。
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