CN106072775A - 一种电子烟用复合加热丝 - Google Patents

一种电子烟用复合加热丝 Download PDF

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CN106072775A
CN106072775A CN201610600941.8A CN201610600941A CN106072775A CN 106072775 A CN106072775 A CN 106072775A CN 201610600941 A CN201610600941 A CN 201610600941A CN 106072775 A CN106072775 A CN 106072775A
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electronic cigarette
film layer
silk
composite heating
heating silk
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倪健雄
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Hangzhou Senyi Technology Co Ltd
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Abstract

本发明提供了一种电子烟用复合加热丝，包括芯部和设置在芯部外表面的壳部，所述芯部为线状的金属加热丝，所述壳部包括至少一层的无机膜层。本发明所述的电子烟用复合加热丝采用具有化学惰性的无机膜层覆盖在金属合金加热表面，避免了烟油与金属合金的直接接触，有效防止化学活性的金属合金发热丝与烟油发生化学反应，避免产生焦糊味的气体和影响发热丝的电热性能。同时加热丝只是直径发生表面，合理控制无机膜层厚度，保证复合发热丝的发热效率和柔性，与现有电子烟结构高度兼容。

Description

一种电子烟用复合加热丝
技术领域
本发明属于电子烟工艺技术领域，尤其是涉及一种电子烟用复合加热丝。
背景技术
电子烟包括用于雾化烟油的雾化组件以及用于供电的电池组件。雾化组件包括用于储油的储油件以及用于加热烟油的加热件。现有技术中的电子烟通常采用加热雾化低沸点的烟油来产生烟雾，这种烟油往往采用丙二醇、甘油为基料，并加入尼古丁和香精。目前通用的加热件为铁铬铝合金或镍铬合金，但是雾化器中心温度长期处在280℃以上，这将会导致化学活性的金属合金发热丝与烟油发生化学反应，产生具有焦糊味的气体，同时也影响发热丝的电热性能，并可能发生熔断。
专利CN201510555798公开了碳纤维热辐射发热体及CN201520101892公开的厚膜电阻陶瓷发热体为代表的非接触式加热方式，可以有效避免加热丝的“积碳”现象。但是这类加热方式存在加热缓慢的缺点，同时对于电子烟的结构设计提出了新的要求。因此设计一种不产生“积碳”的快速加热体是电子烟雾化器技术领域亟待解决的技术问题。
发明内容
有鉴于此，本发明旨在提出一种电子烟用复合加热丝，以解决化学活性的金属合金发热丝与烟油发生化学反应导致的焦糊味和“积碳”的技术问题。
为达到上述目的，本发明的技术方案是这样实现的：
一种电子烟用复合加热丝，包括芯部和设置在芯部外表面的壳部，所述芯部为线状的金属加热丝，所述壳部包括至少一层的无机膜层。
进一步的，所述无机膜层为氧化铈膜层、氧化钛膜层、氧化锆膜层、氧化钪膜层、硅氧化物膜层、硅氮化物膜层、硼氮化物膜层、类金刚石碳膜层、铝氧化物膜层、铝氮化物膜层、钛氧化物膜层或钛氮化物膜层。
优选地，所述无机膜层为硅氧化物膜层或硅氮化物膜层。
进一步的，所述无机膜层的厚度为2μm-50μm。
优选地，所述无机膜层的厚度为5μm-20μm。
进一步的，所述无机膜层的孔隙率低于10％。
进一步的，所述芯部为铁铬铝合金、镍铬合金或PTC合金(正温度系数热敏电阻合金)，其电阻率为1.1μΩ/m-3.5μΩ/m。
进一步的，所述无机膜层采用离子镀膜法、物理气相沉积法、化学气相沉积法、溶胶凝胶法或喷涂法复合在金属加热丝表面。
相对于现有技术，本发明所述的电子烟用复合加热丝具有以下优势：
本发明所述的电子烟用复合加热丝采用具有化学惰性的无机膜层覆盖在金属合金加热表面，避免了烟油与金属合金的直接接触，有效防止化学活性的金属合金发热丝与烟油发生化学反应，避免产生焦糊味的气体和影响发热丝的电热性能。同时加热丝只是直径发生表面，合理控制无机膜层厚度，保证复合发热丝的发热效率和柔性，与现有电子烟结构高度兼容。
附图说明
构成本发明的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在 附图中：
图1为本发明实施例所述的电子烟用复合加热丝的结构示意图。
附图标记说明：
1-无机膜层；2-金属加热丝。
具体实施方式
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”等的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以通过具体情况理解上述术语在本发明中的具体含义。
下面将参考附图并结合实施例来详细说明本发明。
如图1所示，本发明的电子烟用复合加热丝包括芯部和设置在芯部外表面的壳部，所述芯部为线状的金属加热丝2，所述壳部包括至少一层的无机膜层1。所述无机膜层1采用离子镀膜法、物理气相沉积法、化学气相沉积法、溶胶凝胶法或喷涂法复合在金属加热丝2表面。
实施例1
将直径为0.1mm的镍铬合金(型号为Cr20Ni80)浸泡在正硅乙酸酯：无水乙醇：蒸馏水按摩尔比为1：15：9.5的混合溶液中,调节溶液pH值为2.8，在60摄氏度下搅拌5min后，然后取出在120℃干燥1小时，最后在600℃氮气气氛下灼烧2h,得到氧化硅膜层厚度约为5μm的复合加热丝。采用称重法(浸湿液为电子烟油)测试膜层孔隙率为4.2％。
实施例2
将直径为0.1mm的镍铬合金(型号为Cr20Ni80)悬空放置在真空度为2×10-3Pa的腔室中，保持温度为200℃，控制硅烷(纯度99.99％)/氧气(纯度99.99％)/氨气(纯度99.99％)/氢气(纯度99.99％)气体质量流量比为3：1：1：20时，在金属丝衬底上采用电压为1000V，功率为2000W的等离子气相化学沉积(PECVD)100min，得到氮氧化硅膜层厚度约为2.5μm的复合加热丝。采用称重法(浸湿液为电子烟油)测试膜层孔隙率为1.4％。
实施例3
直径为0.2mm的铁铬铝(型号0Cr21Al6Nb)浸泡在正钛酸四丁酯：无水乙醇：蒸馏水按摩尔比为2：14：9.5的混合溶液中,调节溶液pH值为7.8，在60℃下搅拌8min后，然后取出在120℃干燥1小时，最后在600℃氮气气氛下灼烧2h,得到二氧化钛膜层厚度约为4μm的复合加热丝。采用称重法(浸湿液为电子烟油)测试膜层孔隙率为6.9％。
实施例4
直径为0.2mm的铁铬铝(型号0Cr21Al6Nb)浸泡在Ce(NO3)3·6H2O：无水乙醇：蒸馏水按摩尔比为2：13：10的混合溶液中,调节溶液pH值为8.2，在75℃下搅拌8min后，然后取出在120℃干燥1小时，最后在600℃氮气气氛下灼烧2h，得到氧化铈膜层厚度约为6.4μm的复合加热丝。采用称重法(浸湿液为电子烟油)测试膜层孔隙率为7.3％。
实施例5
直径为0.2mm的铁铬铝(型号0Cr21Al6Nb)浸泡在ZrOCl2·8H2O：无水乙醇：蒸馏水按摩尔比为2：17：20的混合溶液中,调节溶液pH值为10，在60℃下搅拌8min后，然后取出在110℃干燥1小时，最后在600℃氮气气氛下灼烧2h，得到氧化锆膜层厚度约为7.2μm的复合加热丝。采用称重法(浸湿液为电子烟油)测试膜层孔隙率为5.1％。
实施例6
直径为0.2mm的铁铬铝(型号0Cr21Al6Nb)浸泡在异丙醇铝(AJ(GH70),：无水乙醇：蒸馏水按摩尔比为2：23：25的混合溶液中,调节溶液pH值为5，在90℃下搅拌8min后，然后取出在110℃干燥1小时，最后在1200℃氮气气氛下灼烧2h,得到氧化铝膜层厚度约为7.2μm的复合加热丝。采用称重法(浸湿液为电子烟油)测试膜层孔隙率为4.9％。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (8)

1.一种电子烟用复合加热丝，其特征在于：该加热丝包括芯部和设置在芯部外表面的壳部，所述芯部为线状的金属加热丝，所述壳部包括至少一层的无机膜层。
2.根据权利要求1所述的电子烟用复合加热丝，其特征在于：所述无机膜层为氧化铈膜层、氧化钛膜层、氧化锆膜层、氧化钪膜层、硅氧化物膜层、硅氮化物膜层、硼氮化物膜层、类金刚石碳膜层、铝氧化物膜层、铝氮化物膜层、钛氧化物膜层或钛氮化物膜层。
3.根据权利要求1所述的电子烟用复合加热丝，其特征在于：所述无机膜层为硅氧化物膜层或硅氮化物膜层。
4.根据权利要求1或2所述的电子烟用复合加热丝，其特征在于：所述无机膜层的厚度为2μm-50μm。
5.根据权利要求1或2所述的电子烟用复合加热丝，其特征在于：所述无机膜层的厚度为5μm-20μm。
6.根据权利要求1或2所述的电子烟用复合加热丝，其特征在于：所述无机膜层的孔隙率低于10％。
7.根据权利要求1或2所述的电子烟用复合加热丝，其特征在于：所述芯部为铁铬铝合金、镍铬合金或PTC合金(正温度系数热敏电阻合金)，其电阻率为1.1μΩ/m-3.5μΩ/m。
8.根据权利要求1所述的电子烟用复合加热丝，其特征在于：所述无机膜层采用离子镀膜法、物理气相沉积法、化学气相沉积法、溶胶凝胶法或喷涂法复合在金属加热丝表面。
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