WO2021073564A1 - 雾化芯及电子雾化装置 - Google Patents
雾化芯及电子雾化装置 Download PDFInfo
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- WO2021073564A1 WO2021073564A1 PCT/CN2020/121091 CN2020121091W WO2021073564A1 WO 2021073564 A1 WO2021073564 A1 WO 2021073564A1 CN 2020121091 W CN2020121091 W CN 2020121091W WO 2021073564 A1 WO2021073564 A1 WO 2021073564A1
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- heating element
- atomizing
- core according
- electrode
- atomization
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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
Definitions
- This application relates to the field of electronic atomization technology, and in particular to an atomization core and an electronic atomization device.
- Electronic atomization devices have a similar appearance and taste to ordinary cigarettes, but usually do not contain other harmful components such as tar and suspended particles in cigarettes. Therefore, electronic atomization devices are commonly used as substitutes for cigarettes.
- the electronic atomization device usually uses a heating wire to atomize the liquid in the substrate to form a smoke that can be smoked.
- the heating wire is not fully infiltrated by the liquid and there is a dry burning phenomenon; at the same time, the heating wire is easily ejected from the substrate and detached during the heating process.
- an atomization core including:
- the base body has an atomizing surface for atomizing the liquid to form smoke, and the base body is used to conduct and buffer the liquid;
- the heating element is a flat elongated structure with a width greater than its thickness.
- the heating element is attached to the atomization surface along its thickness direction or is embedded in the substrate through the atomization surface, and the heating element The body is used to heat and atomize the liquid in the matrix.
- the cross section of the heating element is a rectangle, the rectangle has long sides and short sides, the long side is the width of the heating element, and the short side is the thickness of the heating element .
- the length of the long side is 20-100 times the length of the short side.
- the long side is 0.2 mm to 1 mm
- the short side is 0.01 mm to 1 mm.
- the base body has a cylindrical structure and surrounds an airflow channel for gas to circulate, and the atomization surface defines the boundary of the airflow channel.
- it further includes a first electrode and a second electrode embedded in the base body and respectively connected to both ends of the heating body, the base body has an outer peripheral surface disposed opposite to the atomizing surface, And an end surface connected between the atomization surface and the outer peripheral surface, and both the first electrode and the second electrode extend beyond the base through the outer peripheral surface or the end surface .
- the first electrode and the second electrode are parallel to each other.
- the first electrode and the second electrode both extend from the same end surface of the base body to the outside of the base body.
- the first electrode and the second electrode are both connected to the heating element by welding.
- the heating element is a space spiral arranged around the central axis of the air flow channel.
- the base body is a block structure
- the heating element is a plane spiral body
- the shape of the heating element is a plane sine curve or a space sine curve.
- the heating element is embedded in the base, and the surface of the heating element is flush with the atomizing surface.
- the surface of the heating element protrudes from the atomization surface to a certain height, and the height is the thickness of the heating element.
- the substrate includes a porous ceramic substrate;
- the heating element includes at least one of a nickel-chromium heating element, an iron-chromium-aluminum heating element, or a titanium alloy heating element.
- the porosity of the substrate is 30% to 70%, and the average pore diameter of the substrate is 10 ⁇ m to 50 ⁇ m.
- An electronic atomization device is provided with a liquid storage cavity for storing liquid.
- the electronic atomization device includes a power source and any one of the above-mentioned atomization cores, and the substrate is used to suck liquid from the liquid storage cavity,
- the power supply is used to supply power to the heating element.
- FIG. 1 is a schematic partial three-dimensional structure diagram of a first example of an atomization core provided by an embodiment
- FIG. 2 is a schematic partial three-dimensional structure diagram of a second example of an atomization core provided by an embodiment
- Fig. 3 is a schematic diagram of the three-dimensional structure of the heating element in Fig. 1;
- FIG. 4 is a schematic diagram of a three-dimensional structure of an atomization core provided by another embodiment
- FIG. 5 is a schematic partial cross-sectional view of the first example of the atomization core shown in FIG. 4;
- Fig. 6 is a schematic partial cross-sectional view of a second example of the atomization core shown in Fig. 4;
- Fig. 7 is an exploded structure diagram of Fig. 6.
- the atomization core 10 provided by an embodiment of the present application includes a base 100 and a heating element 200.
- the base 100 is used for conducting or buffering a liquid represented by the aerosol generating substrate, and the heating element 200 is used for heating the liquid buffered in the base 100 so as to atomize the liquid to form a smoke for the user to inhale.
- the base 100 includes a porous ceramic base 100, that is, the base 100 is made of a porous ceramic material. Therefore, the base 100 has a large number of micropores and has a certain porosity. Porosity can be defined as the percentage of the volume of pores in the object to the total volume of the material in its natural state.
- the porosity of the matrix 100 can range from 30% to 70%, for example, the specific values are 30%, 40%, 50% or 70% etc.
- the average pore diameter of the micropores in the substrate 100 may range from 10 ⁇ m to 50 ⁇ m, for example, the specific value is 10 ⁇ m, 20 ⁇ m, 30 ⁇ m, or 50 ⁇ m.
- the flow resistance when the liquid penetrates the matrix 100 is inversely proportional to the porosity of the matrix 100 and the average pore diameter of the micropores. That is, the higher the porosity and the average pore diameter of the micropores of the matrix 100, the greater the flow resistance of the matrix 100 to the liquid. Smaller.
- the base 100 made of porous ceramic material has good high temperature resistance.
- the liquid buffered in the base 100 will not chemically react with the base 100 under high temperature conditions, preventing the liquid from being wasted due to unnecessary chemical reactions. , Can also avoid the production of harmful substances.
- the base 100 has an atomizing surface 110, and the heat of the heating element 200 is conducted to the atomizing surface 110, so that the liquid on the atomizing surface 110 is heated and atomized to form smoke.
- the heating element 200 includes a nickel-chromium heating element, an iron-chromium-aluminum heating element or a titanium alloy heating element, that is, the heating element 200 can be made of nickel-chromium, iron-chromium-aluminum, titanium alloy, etc. Made of metal or alloy materials.
- the width a of the heating element 200 is greater than the thickness b and is flat.
- the length of the heating element 200 is much greater than its width a and thickness b, so that the heating element 200 is elongated. Therefore, the entire heating element 200 is flat and long. Strip structure.
- the heating element 200 can be directly attached to the atomizing surface 110 of the base 100 along its thickness direction (see FIG. 5).
- the heating element 200 is embedded in the base 100 through the atomizing surface 110.
- a part of the area on the atomizing surface 110 is recessed with a set depth relative to other areas to form a groove 120, and the heating element 200 is accommodated in the recess.
- an embedded relationship is formed with the base 100 (see FIGS. 6 and 7).
- the surface of the heating element 200 can protrude from the atomizing surface 110 to set a height, or the surface of the heating element 200 and the atomizing surface 110 are kept flush.
- the surface of the heating element 200 also protrudes from the atomizing surface 110 to a certain height, which is exactly the thickness of the heating element 200.
- the heating element 200 may include two first surfaces 210 and two second surfaces 220, the two first surfaces 210 are arranged opposite to each other, and the two second surfaces 220 are arranged opposite to each other, that is, one of them
- the first surface 210 is connected between one ends of the two second surfaces 220
- the other first surface 210 is connected between the other ends of the two second surfaces 220.
- the area of the second surface 220 is much larger than the area of the first surface 210.
- the direction in which one first surface 210 points to the other first surface 210 is the width direction of the heating element 200, and one of the second surfaces 220 points to the other first surface 210.
- the direction of one second surface 220 is the thickness direction of the heating element 200.
- one of the second surfaces 220 is directly attached to the atomizing surface 110;
- the heating element 200 is embedded in the base 100 along its thickness direction, the two Each of the first surfaces 210 is attached to the side wall 121 of the groove 120, one of the second surfaces 220 is attached to the bottom wall 122 of the groove 120, and the other second surface 220 protrudes from the atomizing surface 110 to set a height or It is flush with the atomization surface 110.
- the cross section of the heating element 200 is rectangular, the long side of the rectangular cross section is the width a of the heating element 200, and the short side of the rectangular cross section is the thickness b of the heating element.
- the value range of the width a of the heating element 200 may be 0.2 mm to 1 mm, for example, the specific value of the width a is 0.2 mm, 0.5 mm, 0.8 mm, or 1 mm.
- the thickness b of the heating element 200 can range from 0.01 mm to 1 mm, for example, the specific value of the thickness b is 0.01 mm, 0.06 mm, 0.5 mm, or 1 mm.
- the specific value of the width a (corresponding to the long side) can be the thickness b (corresponding to the short Side) is 20-100 times of the specific value, and in some embodiments, it may be 30-80 times.
- the heating element 200 is a heating round wire with a circular cross section.
- the atomizing core 10 mainly has the following three defects: First, during the forming process of the atomizing core 10, the heating circle The contact area between the wire and the base 100 is small, and the liquid in the base 100 is difficult to fully infiltrate the entire surface of the heating round wire, so that some parts of the heating round wire are not infiltrated or sufficiently infiltrated by the liquid, resulting in the formation of the heating round wire. If the temperature is too high, the heating round wire will burn dry and form a burnt smell or fried oil, and it will affect the service life of the heating round wire.
- the bonding force between the heating round wire and the base 100 is relatively small.
- the heating round wire is working, under the action of thermal stress, a part of the heating round wire Even all will overcome the above-mentioned bonding force and eject from the base 100 to separate from the base 100, so that the base 100 cannot continue to supply liquid to the heating round wire at all, resulting in dry burning of the heating round wire.
- the heating round wire has a low utilization rate of heat, so that the heating round wire atomizes the liquid less in a unit time, resulting in a lower smoke concentration.
- the atomization core 10 of the above embodiment adopts the heating element 200 with a flat and long structure.
- the thickness b of the heating element 200 can be reduced and the size of the heating element 200 can be increased.
- Its width a is to reduce the area of the first surface 210 and increase the area of the second surface 220, so that its thickness b is much smaller than the diameter of the traditional heating round wire.
- the heating element 200 becomes wider and wider. Thinner, the total surface of the heating element 200 is larger than the total surface of the heating round wire. Since the heating element 200 has a larger area of the second surface 220, the contact area between the heating element 200 and the base 100 is increased.
- the entire heating element 200 can be fully infiltrated by the liquid in the base 100 to ensure that the heating element 200 is fully wetted by the liquid in the base 100.
- the temperature is the same everywhere, preventing the local temperature from being too high and causing dry burning; on the other hand, it can increase the bonding force between the heating element 200 and the base 100, the heating element 200 and the base 100 are more firmly bonded, and the thermal stress generated by the heating element 200 It is difficult to overcome the bonding force to cause the heating element 200 to fall off from the base 100; at the same time, the effective heating area of the heating element 200 is further made larger than the effective heating area of the heating round wire. Instantly atomize more liquid to increase the concentration of the smoke, and avoid the overheating of the heating element 200, making the taste of the smoke more pure.
- the base 100 may have a cylindrical cylindrical structure, and the base 100 is a hollow structure, that is, the base 100 is surrounded by an airflow channel 101 for gas and smoke to circulate.
- the surface 110 is the inner surface of the base 100 and defines the boundary of the air flow channel 101.
- the base 100 of the cylindrical structure also has an outer peripheral surface 120 and two end surfaces 130.
- the outer peripheral surface 120 is disposed opposite to the atomizing surface 110.
- the two end surfaces 130 are located at both ends of the base 100 and are connected to the outer peripheral surface 120 and Between the atomization surface 110.
- the heating element 200 is arranged around the central axis of the airflow channel 101, so that the heating element 200 has a spatial spiral structure.
- the atomization core 10 further includes a first electrode 310 and a second electrode 320.
- Both the first electrode 310 and the second electrode 320 are embedded in the base body 100 and connected to both ends of the heating body 200, respectively.
- both the first electrode 310 and the second electrode 320 may simultaneously extend from the outer peripheral surface 120 of the cylindrical structure base 100 to the outside of the base 100; for another example, both the first electrode 310 and the second electrode 320 may extend from the outer peripheral surface 120 of the base 100 at the same time.
- first electrode 310 may extend from one end surface 130 of the cylindrical structure base 100 to the outside of the base 100
- second electrode 320 may extend from the cylindrical structure
- the other end surface 130 of the structural base 100 extends beyond the base 100.
- first electrode 310 and the second electrode 320 may be parallel to each other, or may form a certain angle. Both the first electrode 310 and the second electrode 320 may be connected to the heating element 200 by welding.
- the base 100 may be a rectangular parallelepiped block structure, and the heating element 200 has a planar spiral structure. At this time, the heating element 200 is similar to a mosquito coil or an involute structure.
- the shape of the heating element 200 can also be wound into a plane or a spatial sine curve, etc., the number of the heating element 200 can be multiple, and multiple heating elements 200 can make the temperature distribution of each area of the atomizing surface 110 better.
- the uniformity ensures that the concentration of the smoke formed by the atomization of each area of the atomization surface 110 is consistent, thereby improving the taste of the smoke.
- the present application also provides an electronic atomization device.
- the electronic atomization device includes a power supply, a control assembly, and the above-mentioned atomization core 10.
- the electronic atomization device may be provided with a liquid storage cavity for storing liquid. 100 can directly contact the liquid in the liquid storage cavity, and under the capillary action of the base 100, the liquid in the liquid storage cavity can continuously penetrate into the base 100 for atomization.
- the positive electrode of the power source may be connected to the first electrode 310 of the atomizing core 10, and the negative electrode of the power source may be connected to the second electrode 320 of the atomizing core 10, so as to realize the power supply of the heating element 200 by the power source.
- the control component controls the power supply to supply power to the heating element 200, and the heating element 200 generates heat to atomize the liquid.
- the control component controls the power supply to stop supplying power to the heating element 200, and the heating element 200 will stop generating heat.
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Abstract
一种雾化芯(10)和电子雾化装置,雾化芯(10)包括:基体(100),用于传导和缓存液体并具有供液体雾化形成烟雾的雾化面(110);及发热体(200),用于对基体(100)中的液体加热雾化,发热体(200)为宽度大于厚度的扁平的长条状结构,发热体(200)沿自身厚度方向附着在雾化面(110)上或经雾化面(110)而嵌设在基体(100)中。由于发热体(200)为宽度大于厚度而呈扁平的长条状结构,这能保证发热体(200)与基体(100)有足够大的接触面积,使得发热体(200)能被基体(100)中的液体充分浸润,保证发热体(200)上各处温度均匀,防止局部温度过高而形成干烧;也可以增大发热体(200)与基体(100)之间的结合力,使得发热体(200)与基体(100)结合更加牢固,发热体(200)产生的热应力难以克服结合力而使得发热体(200)从基体(100)上脱落。
Description
本申请涉及电子雾化技术领域,特别是涉及一种雾化芯及电子雾化装置。
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发热丝将基体内的液体雾化以形成可抽吸的烟雾。但是,对于传统的电子雾化装置,发热丝因未被液体充分浸润而存在干烧现象;同时,发热丝在发热过程中容易从基体上弹出而脱离。
发明内容
根据本申请的各种实施例,提供一种雾化芯,包括:
基体,具有供液体雾化形成烟雾的雾化面,所述基体用于传导和缓存液体;及
发热体,为宽度大于厚度的扁平的长条状结构,所述发热体沿自身厚度方向附着在所述雾化面上或经所述雾化面而嵌设在所述基体中,所述发热体用于对所述基体中的液体加热雾化。
在其中一个实施例中,所述发热体的横截面为矩形,所述矩形具有长边和短边,所述长边为所述发热体的宽度,所述短边为所述发热体的厚度。
在其中一个实施例中,所述长边的长度为所述短边的长度的20~100倍。
在其中一个实施例中,所述长边为0.2mm~1mm,所述短边为0.01mm~1mm。
在其中一个实施例中,所述基体为筒状结构并围设成供气体流通的气流通道,所述雾化面界定所述气流通道的边界。
在其中一个实施例中,还包括嵌入所述基体内并分别与所述发热体两端连接的第一电极和第二电极,所述基体具有与所述雾化面相对设置的外侧周面、及连接在所述雾化面与所述外侧周面之间的端面,所述第一电极、所述第二电极两者均经所述外侧周面或所述端面延伸至所述基体之外。
在其中一个实施例中,所述第一电极和所述第二电极相互平行。
在其中一个实施例中,所述第一电极、所述第二电极均从所述基体的同一端面延伸至所述基体之外。
在其中一个实施例中,所述第一电极和所述第二电极均通过焊接的方式与所述发热体连接。
在其中一个实施例中,所述发热体为环绕所述气流通道的中心轴线设置的空间螺旋体。
在其中一个实施例中,所述基体为块状结构,所述发热体为平面螺旋体。
在其中一个实施例中,所述发热体的形状为平面正弦曲线或空间正弦曲线。
在其中一个实施例中,所述发热体嵌设在所述基体中,所述发热体的表面平齐于所述雾化面。
在其中一个实施例中,所述发热体的表面凸出所述雾化面一定高度,该高度为发热体的厚度。
在其中一个实施例中,所述基体包括多孔陶瓷基体;所述发热体包括镍铬发热体、铁铬铝发热体或钛合金发热体中的至少一种。
在其中一个实施例中,所述基体的孔隙率为30%~70%,所述基体的平均孔径为10μm~50μm。
一种电子雾化装置,开设有用于存储液体的储液腔,所述电子雾化装置包括电源和上述任一所述的雾化芯,所述基体用于从所述储液腔吸取液体,所述电源用于对所述发热体供电。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其他特征、目的和优点将从说明书、附图以及权利要求书变得明显。
图1为一实施例提供的雾化芯的第一示例局部立体结构示意图;
图2为一实施例提供的雾化芯的第二示例局部立体结构示意图;
图3为图1中发热体的立体结构示意图;
图4为另一实施例提供的雾化芯的立体结构示意图;
图5为图4所示的雾化芯的第一示例局部剖视结构示意图;
图6为图4所示的雾化芯的第二示例局部剖视结构示意图;
图7为图6的分解结构示意图。
为了更好地描述和说明这里公开的那些申请的实施例和/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申请、目前描述的实施例和/或示例以及目前理解的那些申请的最佳模式中的任何一者的范围的限制。
为了便于理解本申请,下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施方式。但是,本申请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申请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。
同时参阅图1和图2,本申请一实施例提供的雾化芯10,包括基体100和发热体200。基体100用于传导或缓存气溶胶生成基质为代表的液体,发热体200用于将缓存在基体100中的液体进行加热,从而将液体雾化形成供用户抽吸的烟雾。
同时参阅图1和图2,在一些实施例中,基体100包括多孔陶瓷基体100,即基体100采用多孔陶瓷材料制成,因此,基体100内存在大量的微孔而具有一定的孔隙率,孔隙率可以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30%~70%,例如其具体取值为30%、40%、50%或70%等。基体100中微孔的平均孔径的取值范围可以为10μm~50μm,例如其具体取值为10μm、20μm、30μm或50μm。液体在基体100中渗透时的流动阻力与基体100的孔隙率、微孔的平均孔径均成反比,即基体100的孔隙率和微孔的平均孔径愈高,基体100对液体所产生的流动阻力愈小。同时,多孔陶瓷材料制成的基体100具有很好的耐高温特性,缓存在基体100中的液体不会在高温条件下与基体100产生化学反应,防止液体因参与不必要的化学反应而产生浪费,也能避免有害物质的产生。基体100具有雾化面110,发热体200的热量传导至雾化面110,从而对雾化面110上的液体进行加热雾化以形成烟雾。
同时参阅图5至图7,在一些实施例中,发热体200包括镍铬发热体、铁铬铝发热体或钛合金发热体,即发热体200可以采用镍铬、铁铬铝、钛合金等金属或合金材料制成。发热体200的宽度a大于厚度b而呈扁平状,同时,发热体200的长度远远大于其宽度a和厚度b,使得发热体200呈长条状,因此,发热体200整体呈扁平的长条状结构。发热体200可以沿自身的厚度方向直接附着在基体100的雾化面110上(参阅图5)。或者,发热体200经雾化面110而嵌设在基体100中,换言之,雾化面110上的一部分区域相对其它区域凹陷设定深度而形成凹槽120,发热体200则容置在该凹槽120中,从而与基体100形成嵌设关系(参阅图6和图7)。当发热体200嵌设在基体100中时,发热体200的表面可以凸出雾化面110设定高度,或者发热体200的表面与雾化面110保持平齐。当发热体200直接贴附在雾化面110上时,发热体200的表面当然也凸出雾化面110一定高度,该高度刚好为发热体200的厚度。
同时参阅图3至图7,例如,发热体200可以包括两个第一表面210和两个第二表面220,两个第一表面210相对设置,两个第二表面220相对设置,即其中一个第一表面210连接在两个第二表面220的其中一端之间,另外一个第一表面210连接在两个第二表面220的另外一端之间。第二表面220的面积远远大于第一表面210的面积,此时,其中一个第一表面210指向另外一个第一表面210的方向为发热体200的宽度方向,其中一个第二表面220指向另外一个第二表面220的方向为发热体200的厚度方向。当发热体200沿其厚度方向直接附着在雾化面110上时,其中一个第二表面220直接附着在雾化面110上;当发热体200沿其厚度方向嵌设在基体100中时,两个第一表面210均附着在凹槽120的侧壁121上,其中一个第二表面220附着在凹槽120的底壁122上,另外一个第二表面220凸出雾化面110设定高度或与雾化面110相互平齐。
发热体200的横截面为矩形,矩形横截面的长边为发热体200的宽度a,矩形横截面的短边为发热体的厚度b。发热体200的宽度a的取值范围可以为0.2mm~1mm,例如宽度a的具体取值为0.2mm、0.5mm、0.8mm或1mm等。发热体200的厚度b的取值范围可以为0.01mm~1mm,例如厚度b的具体取值为0.01mm、0.06mm、0.5mm或1mm等。不论发热体200的宽度a和厚度b的具体取值如何变化,只需保证宽度a的值大于厚度b的值即可,例如宽度a(对应长边)具体取值可以为厚度b(对应短边)具体取值的20~100倍,在一些实施例中可以为30~80倍。
对于传统的雾化芯10,其发热体200为横截面呈圆形的发热圆丝,该雾化芯10主要存在以下三个缺陷:第一,在雾化芯10的成型过程中,发热圆丝与基体100的接触面积较小,基体100中的液体难以充分浸润整个发热圆丝的表面,使得发热圆丝的某些局部并未被液体浸润或充分浸润,导致发热圆丝的该局部形成过高的温度,发热圆丝将产生干烧而形成焦味或炸油现象,同时影响发热圆丝的使用寿命。第二,由于发热圆丝与基体100的接触面积较小,使得发热圆丝与基体100之间的结合力较小,当发热圆丝工作时,在热应力的作用下,发热圆丝的局部甚至全部将克服上述结合力而从基体100上弹出以脱离基体100,使得基体100完全无法继续向发热圆丝供应液体,从而导致发热圆丝产生干烧。第三,在相同电阻值 的情况下,发热圆丝对热量的利用率较低,使得发热圆丝在单位时间内对液体的雾化量较少,从而导致烟雾浓度较低。
而上述实施例的雾化芯10采用呈扁平长条状结构的发热体200,在与传统发热圆丝的横截面和电阻值相同的情况下,可以减少发热体200厚度b的尺寸而增大其宽度a的尺寸,即减少第一表面210的面积并增大第二表面220的面积,使得其厚度b的尺寸远远小于传统发热圆丝的直径,换言之,发热体200变得更宽且更薄,发热体200的总表面大于发热圆丝的总表面积。由于发热体200具有较大面积的第二表面220,从而增大发热体200与基体100的接触面积,这样一方面使得整个发热体200能被基体100中的液体充分浸润,保证发热体200上各处温度一致,防止局部温度过高而形成干烧;另一方面可以增大发热体200与基体100之间的结合力,发热体200与基体100结合更加牢固,发热体200产生的热应力难以克服结合力而使得发热体200从基体100上脱落;同时,进一步使得发热体200的有效加热面积大于发热圆丝的有效加热面积,发热体200能够在短时间内迅速升温和冷却,既能瞬间雾化更多的液体量以提高烟雾的浓度,又能避免发热体200温度过高,使得烟雾的口感更加纯正。
同时参阅图1至图3,在一些实施例中,基体100可以为圆柱形的筒状结构,该基体100为中空结构,即基体100围设成一个供气体和烟雾流通的气流通道101,雾化面110为基体100的内表面并界定气流通道101的边界。该筒状结构的基体100还具有外侧周面120和两个端面130,外侧周面120与雾化面110相对设置,两个端面130位于基体100的两端并分别连接在外侧周面120与雾化面110之间。本实施方式中,发热体200环绕气流通道101的中心轴线设置,使得发热体200呈空间螺旋体结构。
同时参阅图1至图3,雾化芯10还包括第一电极310和第二电极320,第一电极310和第二电极320两者嵌入基体100中并分别连接在发热体200的两端,例如,第一电极310和第二电极320两者可以同时从筒状结构基体100的外侧周面120延伸至基体100之外;又如,第一电极310和第二电极320两者可以同时从筒状结构基体100的同一个端面130延伸至基体100之外;再如,第一电极310可以从筒状结构基体100的一个端面130延伸至基体100之外,第二电极320可以从筒状结构基体100的另一个端面130延伸至基体100之外。当然,第一电极310和第二电极320可以相互平行,也可以形成一定的夹角。第一电极310和第二电极320两者可以通过焊接的方式与发热体200进行连接。
参阅图4,在一些实施例中,基体100可以为长方体的块状结构,发热体200为平面螺旋体结构,此时的发热体200类似于蚊香或渐开线等结构。
在其它实施例中,发热体200的形状还可以绕制成平面或空间正弦曲线等,发热体200的数量可以为多个,多个发热体200可以使得雾化面110各个区域的温度分布更加均匀,保证雾化面110各个区域雾化形成的烟雾浓度一致,从而提高烟雾的口感。
本申请还提供一种电子雾化装置,该电子雾化装置包括电源、控制组件和上述的雾化芯10,电子雾化装置可以开设有储液腔,该储液腔用于存储液体,基体100可以与储液腔中的液体直接接触,在基体100的毛细作用下,使得储液腔中的液体能持续渗透至基体100中以便雾化。电源的正极可以与雾化芯10的第一电极310连接,电源的负极可以与雾化芯10的第二电极320连接,从而实现电源对发热体200的供电。当用户抽吸时,控制组件控制电源对发热体200供电时,发热体200产生热量以对液体雾化。当用户停止抽吸时,控制组件控制电源停止对发热体200供电时,发热体200将停止产生热量。
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申请的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对申请专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本申请构思的前提下,还可以做出若干变形和改进,这些都属于本申请的保护范围。因 此,本申请专利的保护范围应以所附权利要求为准。
Claims (18)
- 一种雾化芯,其特征在于,包括:基体,具有供液体雾化形成烟雾的雾化面,所述基体用于传导和缓存液体;及发热体,为宽度大于厚度的扁平的长条状结构,所述发热体沿自身厚度方向附着在所述雾化面上或经所述雾化面而嵌设在所述基体中,所述发热体用于对所述基体中的液体加热雾化。
- 根据权利要求1所述的雾化芯,其特征在于,所述发热体的横截面为矩形,所述矩形具有长边和短边,所述长边为所述发热体的宽度,所述短边为所述发热体的厚度。
- 根据权利要求2所述的雾化芯,其特征在于,所述长边的长度为所述短边的长度的20~100倍。
- 根据权利要求3所述的雾化芯,其特征在于,所述长边为0.2mm~1mm,所述短边为0.01mm~1mm。
- 根据权利要求1所述的雾化芯,其特征在于,所述基体为筒状结构并围设成供气体流通的气流通道,所述雾化面界定所述气流通道的边界。
- 根据权利要求5所述的雾化芯,其特征在于,还包括嵌入所述基体内并分别与所述发热体两端连接的第一电极和第二电极,所述基体具有与所述雾化面相对设置的外侧周面、及连接在所述雾化面与所述外侧周面之间的端面,所述第一电极、所述第二电极均经所述外侧周面或所述端面延伸至所述基体之外。
- 根据权利要求6所述的雾化芯,其特征在于,所述第一电极和所述第二电极相互平行。
- 根据权利要求6所述的雾化芯,其特征在于,所述第一电极、所述第二电极均从所述基体的同一端面延伸至所述基体之外。
- 根据权利要求6所述的雾化芯,其特征在于,所述第一电极和所述第二电极均通过焊接的方式与所述发热体连接。
- 根据权利要求5所述的雾化芯,其特征在于,所述发热体为环绕所述气流通道的中心轴线设置的空间螺旋体。
- 根据权利要求1所述的雾化芯,其特征在于,所述基体为块状结构,所述发热体为平面螺旋体。
- 根据权利要求1所述的雾化芯,其特征在于,所述发热体的形状为平面正弦曲线或空间正弦曲线。
- 根据权利要求1所述的雾化芯,其特征在于,所述发热体嵌设在所述基体中,所述发热体的表面平齐于所述雾化面。
- 根据权利要求1所述的雾化芯,其特征在于,所述发热体的表面凸出所述雾化面一定高度,该高度为发热体的厚度。
- 根据权利要求1所述的雾化芯,其特征在于,所述基体包括多孔陶瓷基体。
- 根据权利要求1所述的雾化芯,其特征在于,所述发热体包括镍铬发热体、铁铬铝 发热体或钛合金发热体中的至少一种。
- 根据权利要求1所述的雾化芯,其特征在于,所述基体的孔隙率为30%~70%,所述基体的平均孔径为10μm~50μm。
- 一种电子雾化装置,其特征在于,开设有用于存储液体的储液腔,所述电子雾化装置包括电源和权利要求1至17中任一项所述的雾化芯,所述基体用于从所述储液腔吸取液体,所述电源用于对所述发热体供电。
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