WO2018041106A1 - 一种声表面波雾化器 - Google Patents
一种声表面波雾化器 Download PDFInfo
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- WO2018041106A1 WO2018041106A1 PCT/CN2017/099529 CN2017099529W WO2018041106A1 WO 2018041106 A1 WO2018041106 A1 WO 2018041106A1 CN 2017099529 W CN2017099529 W CN 2017099529W WO 2018041106 A1 WO2018041106 A1 WO 2018041106A1
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- acoustic wave
- surface acoustic
- atomization
- oil
- piezoelectric substrate
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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
- A24F40/05—Devices without heating means
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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
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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
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- the surface acoustic wave atomization chip 6 includes a piezoelectric substrate 6-1, an interdigital transducer 6-2, and a sound absorbing material 6-3.
- the piezoelectric substrate material may be a piezoelectric single crystal, a piezoelectric film, and a piezoelectric ceramic such as quartz or lithium niobate. It is preferable to cut a lithium niobate (LiNbO 3 ) piezoelectric substrate in the X128.68° direction.
- the surface acoustic wave is a kind of mechanical wave that propagates along the superficial layer of the piezoelectric substrate and has the advantage of energy concentration. Easy to integrate with integrated circuits, micro devices, sensing and microfluidic technology for miniaturization and integration.
- the sound power intensity and frequency used in the surface acoustic wave device are similar to those used for the pregnancy health check, and the safety is high.
- the oil storage type device with the oil guiding core has a simpler structure and lower manufacturing cost than the oil storage type device with the micro fluid flow control device, and the paper oil guiding core is safe and environmentally friendly, and the detachable design greatly facilitates the atomizing warehouse. Cleaning of the surface acoustic wave atomization chip.
- FIG. 2 is a schematic structural view of a drip-type surface acoustic wave atomization chip of the present invention
- Figure 4 is a cross-sectional view of an oil storage type surface acoustic wave atomizer having an oil guiding core according to the present invention
- the reference numerals are: 1: base; 2: atomization chamber; 3: nozzle; 4: air inlet; 5: host connector; 6: surface acoustic wave atomization chip; 6-1: piezoelectric substrate; 6-2: interdigital transducer; 6-3: sound absorbing material; 6-4: microchannel; 7: lead pin; 8: host signal generating device; 8-1: signal generator; 8-2: power Amplifier; 9: smoke oil droplets; 10: oil storage tank; 10-1: oil storage tank end cover; 101: smoke oil inlet end; 102: smoke oil outlet end; 103: capillary tube; 104: oil guiding core.
- the base 1, the atomization chamber 2 and the main unit are assembled, and the smoke oil is dropped on the surface acoustic wave atomization chip 6, and the suction nozzle 3 is attached.
- the host power is activated, the signal generating device 8 operates, the interdigital transducer 6-2 obtains an alternating current signal and is excited, and the surface of the piezoelectric substrate 6-1 vibrates, and the corresponding elastic sound field is excited in the substrate by the inverse piezoelectric effect.
- the oil storage atomizer includes a base, an atomization chamber, a storage tank, and a suction nozzle. Wherein the base is the same as the drip atomizer.
- the atomization chamber comprises a surface acoustic wave atomization chip and a fixing groove, one end of the atomization chamber is connected with the base, and the other end is connected with the oil storage tank.
- the inner end of the atomization chamber is provided with a fixing groove for fixing the surface acoustic wave atomization chip in the atomization chamber.
- the surface acoustic wave atomization chip 6 includes a piezoelectric substrate 6-1, an interdigital transducer 6-2, a sound absorbing material 6-3, and a smoke oil microchannel 6-4.
- the base of the atomizer to the main unit, connect the atomization chamber and the oil storage tank, add the oil to the oil storage tank, and cover the nozzle.
- the host power supply is started, the host control system and the signal generating device operate, and the control system controls the smoke oil in the oil storage tank to be transported through the microchannel smoke oil inlet end 101 through the microchannel 6-4 to the smoke oil outlet end 102 and then dropped on the piezoelectric base.
- the signal generating means 8 triggers a surface acoustic wave propagating along the surface of the piezoelectric substrate.
- the positional relationship between the oil storage tank 10 and the atomization chamber 2 is different from the side-by-side arrangement of the common electronic cigarette atomizers in the radial direction, but is arranged side by side in the axial direction.
- the capillary 103 is in close contact with the surface of the piezoelectric substrate 6-1 of the surface acoustic wave atomization chip 6.
- the oil guiding core 104 is embedded in the capillary 103, and one end of the oil guiding core extends into the oil storage chamber cavity, and the other end extends to the outside of the capillary end portion and is in surface contact with the piezoelectric substrate 6-1.
- the atomization chamber 2 is a C-shaped structure that is open on one side, and its open end is just tightly coupled to one side outer wall of the oil storage tank 10.
- the atomization chamber 2 is fixedly connected to the base 1.
- the oil storage tank 10 and the atomization chamber 2 have a detachable structure, which is convenient for replacing the oil guiding core 104, the cleaning atomizing chamber 2 and the surface acoustic wave atomizing chip 6.
- the oil storage tank 10 and the atomization chamber 2 can be made of a transparent material to observe the smoke consumption and the atomization of the smoke oil in real time.
- the oil guiding core 104 can adopt a cellulose polyester paper filter core, and other safe and environmentally friendly porous materials can also be used.
- the oil guiding core 104 is smoked from the oil storage tank 10, and the oil is continuously delivered to the atomizing chip 6 through the capillary pressure generated in the oil guiding core.
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Abstract
一种声表面波雾化器,包括:底座(1),开设有进气孔(4),底端设有主机连接头(5);雾化仓(2),与进气孔(4)连通,内部底端开设有固定槽(11)和固定在其中的声表面波雾化芯片(6);吸嘴(3);主机信号发生装置(8);雾化仓(2)的一端与底座(1)连接,另一端与吸嘴(3)连接。
Description
本发明属于电子烟技术领域,具体地说,涉及一种声表面波雾化器。
迄今为止,电加热方式仍然是市售电子烟加热雾化烟油的主要方式,其中,雾化器作为电子烟的核心部件,基本上由储油元件、导油元件和电热元件组成。储油元件中的烟油通过导油件输送至电热元件上,通电抽吸时,电热元件的高温使其上的烟油蒸发雾化,形成的雾化蒸汽随载气(空气)一起被抽吸者吸入。
烟油在电热元件上经历了高温加热的过程,在抽吸时,电热元件的高温不仅可能导致烟油中所含的一些致香成分在高温下发生分解变质,造成抽吸异味或香气变化,从而直接影响抽吸品质;还可能导致制造电热元件和导油元件的材料发生裂解、脱落、碳化或溶出,使得抽吸感官品质下降并存在潜在的健康隐患。
现有电子烟雾化技术除了主流的电热雾化外,超声波雾化也是一大趋势。最新的电子烟超声波雾化技术主要包括两类:一类仍需采用发热元件先加热烟油,然后再用超声雾化装置雾化加热后的烟油(如《超声波振动式电子烟雾化装置及电子烟》CN201610007620.7,《一种电子烟雾化器及电子烟》CN201510423239.4);另一类是采用包括压电陶瓷层和用于驱动其振动的导电体构成的雾化片超声雾化烟油,该技术不需发热元件,所用雾化片的压电陶瓷层的上下表面分别需要设置两个与之接触的导电层,另外还需要多孔导油结构(《一种超声波雾化器及电子烟》CN201610160216.3)。超声波雾化器往往体积较大,使得电子烟难以小型化。
因此,人们希望开发除了电加热雾化和超声波雾化之外的新型雾化方式,且对应的雾化设备最好能够小型化。
发明内容
本发明提供一种声表面波雾化器,该雾化属于非电热雾化,无需电热元件和/或导油元件,克服了传统电加热雾化带来的感官品质不佳或不稳定、存在健康隐患等缺陷,结构简单,可以采用直接滴油式雾化,也可与储油件集成。
滴油式雾化器包括底座1、雾化仓2和吸嘴3。其中,底座1开设进气孔4和主机连接头5。所述进气孔4与雾化仓内部贯通。所述连接头5与主机电连接。所述雾化仓2包括声表面波雾化芯片6和固定槽。雾化仓一端与底座连接,另一端与吸嘴连接。所述雾化仓内部低端开有固定槽,用于将声表面波雾化芯片固定在雾化仓中。所述声表面波雾化芯片6包括压电基片6-1、叉指换能器6-2和吸声材料6-3。其中,用于所述压电基片材料可为压电单晶、压电薄膜和压电陶瓷,比如石英、铌酸锂。优选Y切X128.68°方向的铌酸锂(LiNbO3)压电基片。压电基片经表面抛光后,在其上溅镀沉积一层金属(如铝)膜,通过光刻工艺制成具有能量转换功能的交叉指形金属电极(叉指换能器6-2)。叉指换能器6-2通过设在压电基片外侧的引线脚7与主机实现电连接。吸声材料6-3设置在压电基片两端的端面上,是为了抑制声表面波在两个端面间来回反射。
主机中包含用于驱动叉指换能器6-2工作的信号发生装置8。所述主机信号发生装置8包括信号发生器8-1和功率放大器8-2,信号发生器对声表面波雾化芯片施加交流信号,而功率放大器则将信号放大,施加的信号频率设定为器件的工作频率,在经过放大后加载到叉指换能器6-2上,用以激发声表面波。声表面波携带的能量会以漏声表面波的模式向液体传递能量并产生形变,从而对液体的自由表面产生强烈的扰动,当液体表面自身的表面张力不足以保持其几何形态的稳定时,雾化便开始发生。
与现有超声波雾化技术相比,本发明的优势:
声表面波是一种只能在固体表面传播的弹性声波,其能量大部分集中在表面以下深度约为几个波长范围内。声表面波雾化是通过衍射进入液体的声能产生的声流对液体表面产生的表面张力波的扰动引起的,而超声波雾化现象是由压电基片的往复活塞运动产生的扰动产生的。声表面波雾化器的操作频率通常为10-500MHz,比传统超声波雾化器(20kHz-3MHz)高一个数量级。因此,声表面波雾化器的尺寸更小,结构更紧凑也更加便携。
作为一种高频声波雾化方法,具有比超声波雾化技术更高的频率,可以实现烟油雾化气溶胶的单分散性与连续稳定性。同时,高频率便于粘度较大的烟油的雾化。
体声波能量在整个装置基片中传播,而声表面波把其多数能量限定在压电基片的表面,需要功率比体声波低。
声表面波是沿压电基底浅表层传播的一种机械波,具有能量集中的优点。容易与集成电路、微装置、感应和微流控技术结合,便于小型化,集成化。
声表面波装置中使用的声波功率强度和频率和用于孕期健康检查的范围相似,安全性高。
与现有电加热雾化技术相比,本发明的优势:
消除了因使用高温电热元件引起的烟油化学成分变化、干烧等导致的感官品质变化和健康风险等缺陷。
滴油式装置结构简单,具有微流控装置的储油式装置通过对微通道的设计可以定量控制烟油雾化量,从而保证感官一致性及改善用户体验。
具有导油芯的储油式装置相比具有微流控装置的储油式装置,结构更为简单,制造成本更低,纸质导油芯安全环保,可拆卸式设计大大方便了雾化仓和声表面波雾化芯片的清洗。
图1为本发明的声表面波雾化器示意图;
图2为本发明的滴油式声表面波雾化芯片结构示意图;
图3为本发明的具有微流控装置的储油式声表面波雾化芯片结构示意图;
图4为本发明的具有导油芯的储油式声表面波雾化器剖面图;
图5为本发明的具有导油芯的储油式声表面波雾化芯片示意图。
附图标记为:1:底座;2:雾化仓;3:吸嘴;4:进气孔;5:主机连接头;6:声表面波雾化芯片;6-1:压电基片;6-2:叉指换能器;6-3:吸声材料;6-4:微通道;7:引线脚;8:主机信号发生装置;8-1:信号发生器;8-2:功率放大器;9:烟油液滴;10:储油仓;10-1:储油仓端盖;101:烟油入口端;102:烟油出口端;103:毛细管;104:导油芯。
滴油式雾化器的使用方法:
组装底座1、雾化仓2和主机,将烟油滴加在声表面波雾化芯片6上,装上吸嘴3。启动主机电源,信号发生装置8工作,叉指换能器6-2获得交流电信号而被激励,压电基片6-1表面振动,通过逆压电效应在基片内激发相应的弹性声场,将电信号转变为声信号,形成与外加信号同频率并沿基片表面传播的声表面波,声表面波沿压电基片表面传播,当遇到位于声表面波传播路径上的烟油液滴9时,液滴发生雾化形成气溶胶并被从雾化器底座进气孔4进入的空气带入吸嘴端而被吸入。如图1和图2所示。
具有微流控装置的储油式雾化器使用方法:
储油式雾化器包括底座、雾化仓、储油仓和吸嘴。其中,底座与所述滴油式雾化器相同。雾化仓包括声表面波雾化芯片和固定槽,雾化仓一端与底座连接,另一端与储油仓连接。所述雾化仓内部低端开有固定槽,用于将声表面波雾化芯片固定在雾化仓中。所述声表面波雾化芯片6包括压电基片6-1、叉指换能器6-2、吸声材料6-3和烟油微通道6-4。其中,烟油微通道6-4采用微加工技术在聚二甲基硅氧烷(PDMS)上制造,PDMS微通道中烟油输送方向与压电基片上的叉指换能器产生的声表面波传播方向相互垂直。微通道上表面固定在储油仓底部并通过烟油入口端101与储油仓连接,微通道下表面固定在压电基片上并设有烟油出口端102。储油仓中的烟油可采用不同的驱动方式通过微通道入口端经微通道输送至出口端,而且储油仓与微通道入口端可设计各种微泵或微阀并通过主机控制***控制储油仓与微通道之间的连通和关断。上述烟油微通道和与储油仓连接的微泵或微阀等共同构成了微流控装置。压电基片上除微通道外的其他部件的结构、布置及制造方法与所述滴油式雾化器声表面波雾化芯片相同。
连接雾化器底座与主机,连接雾化仓与储油仓,向储油仓中加注烟油,盖上吸嘴。启动主机电源,主机控制***和信号发生装置工作,控制***控制储油仓中的烟油通过微通道烟油入口端101经微通道6-4输送至烟油出口端102后滴在压电基片表面,信号发生装置8则触发沿压电基片表面传播的声表面波,当声表面波遇到位于其传播路径上的烟油液滴9时,液滴发生雾化形成气溶胶并被从雾化器底座进气孔进入的空气带入吸嘴端而被吸入。如图1和图3所示。
具有导油芯的储油式雾化器使用方法:
储油式雾化器包括底座1、雾化仓2、储油仓10和吸嘴端3。雾化仓2与底座1之间设有固定槽11用于固定声表面波雾化芯片6。底座侧壁设有空气进气孔4并与雾化仓内部连通。储油仓10上部近吸嘴端设有端盖10-1可以打开注油。储油仓10的一侧腔壁上开有小孔及与之连通并固设在仓壁上的中空毛细管103。储油仓10与雾化仓2的位置关系不同于常见电子烟雾化器沿径向的并排布置,而是沿轴向的并排布置。所述毛细管103与声表面波雾化芯片6的压电基片6-1表面紧密贴合。所述毛细管103中嵌入导油芯104,且该导油芯一端延伸至储油仓腔体内,另一端延伸至毛细管端部外并与压电基片6-1表面接触。所述雾化仓2为一侧敞开的C型结构,其敞开端正好能与储油仓10的一侧外壁紧密结合。雾化仓2与底座1固定连接。所述储油仓10与雾化仓2之间为可拆卸式结构,便于更换导油芯104和清洗雾化仓2及声表面波雾化芯片6。所述储油仓10和雾化仓2均可采用透明材质制成,以便实时观察烟油消耗及烟油雾化情况。所述导油芯104可采用纤维素聚酯纸过滤芯,也可采用其他安全环保的多孔材料。所述导油芯104从储油仓10中虹吸烟油,通过导油芯中产生的毛细管压可连续输送烟油至雾化芯片6上。
抽吸前,将导油芯104嵌入毛细管103中并使一端延伸至储油仓中,另一端延伸至毛细管端部外。将储油仓与雾化仓进而与底座连接。向储油仓中加入烟油,直至烟油液面高于毛细管端面。关闭储油仓10上部端盖。连接雾化器和主机,盖上吸嘴。启动主机电源,主机信号发生装置8工作,叉指换能器6-2获得交流电信号而被激励,压电基片6-1表面振动,通过逆压电效应在基片内激发相应的弹性声场,将电信号转变为声信号,形成与外加信号同频率并沿基片表面传播的声表面波,声表面波沿压电基片表面传播,当声表面波遇到位于其传播路径上且位于导油芯前端的烟油液膜9时,声波能量漏入液膜中,膜的自由面变得不稳定,液膜破裂形成气溶胶并被从雾化器底座进气孔进入的空气带入吸嘴端而被吸入。如图1和图4、及图5所示。
Claims (8)
- 一种声表面波雾化器,其特征在于,包括:底座(1),开设有进气孔(4),底端设有主机连接头(5);雾化仓(2),与所述进气孔(4)连通,内部底端开设有固定槽和固定在其中的声表面波雾化芯片(6);吸嘴(3);主机信号发生装置(8);所述雾化仓(2)的一端与所述底座(1)连接,另一端与所述吸嘴(3)连接。
- 根据权利要求1所述的声表面波雾化器,其特征在于,所述声表面波雾化芯片(6)为滴油式声表面波雾化芯片或储油式声表面波雾化芯片,包括:压电基片(6-1),外侧设有引线脚(7);叉指换能器(6-2),布置在所述压电基片(6-1)表面;吸声材料(6-3),布置在所述叉指换能器(6-2)两端的所述压电基片(6-1)端面上。
- 根据权利要求1所述的声表面波雾化器,其特征在于,所述主机信号发生装置(8)包括信号发生器(8-1)和功率放大器(8-2)。
- 根据权利要求2所述的声表面波雾化器,其特征在于,所述储油式声表面波雾化芯片上布置有微通道(6-4)以及被所述微通道(6-4)连接的烟油入口端(101)和烟油出口端(102)。
- 根据权利要求2所述的声表面波雾化器,其特征在于,所述储油式声表面波雾化芯片(6)上布置有与其表面紧密贴合的毛细管(103),所述毛细管(103)中嵌入有导油芯(104),所述导油芯(104)一端延伸至所述毛细管(103)端外并与所述压电基片(6-1)表面接触,另一端延伸至储油仓腔体内(10)。
- 根据权利要求2所述的声表面波雾化器,其特征在于,所述压电基片(6-1)为压电单晶、压电薄膜或压电陶瓷。
- 根据权利要求6所述的声表面波雾化器,其特征在于,所述压电基片(6-1)为石英或铌酸锂。
- 根据权利要求7所述的声表面波雾化器,其特征在于,所述压电基片(6-1)为Y切X 128.68°方向的铌酸锂。
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