便携式负压除尘黑板擦流体通道设计与除尘效率匹配问题研究
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摘要
为了进一步提升便携式负压除尘黑板擦的除尘效率,合理设计黑板擦有限空间内部结构,根据流体力学相关原理,对流体通道的横截面积、长度与除尘效率匹配关系进行了研究。结果显示:流体通道孔径在18～22mm之间时吸尘效率在86%以上,在孔径为20mm时达到最大值;在25mm处风速和风压达到最值;孔径为20mm时,通道长度在25mm处效率最高。为便携式负压除尘黑板擦的设计工作提供了参考。
In order to further enhance the efficiency of portable dust removal eraser with negative pressure and to properly design the internal structure in the finite space of eraser, the research that based on the theories of fluid mechanics for the cross-sectional area, the length of the fluid passage, and the dust removal efficiency was carried out.Results showed that with the pore size between 18 to 22mm, the dust suction efficiency was over 86%, and it reached the maximum when the pore size was 20mm. The wind speed and pressure reached the maximum value when the fluid passage was 25mm, the efficiency was the highest when the pore size was 20mm and the passage length was 25mm. It provides a reference for the design of portable dust removal eraser with negative pressure.
In order to further enhance the efficiency of portable dust removal eraser with negative pressure and to properly design the internal structure in the finite space of eraser, the research that based on the theories of fluid mechanics for the cross-sectional area, the length of the fluid passage, and the dust removal efficiency was carried out.Results showed that with the pore size between 18 to 22mm, the dust suction efficiency was over 86%, and it reached the maximum when the pore size was 20mm. The wind speed and pressure reached the maximum value when the fluid passage was 25mm, the efficiency was the highest when the pore size was 20mm and the passage length was 25mm. It provides a reference for the design of portable dust removal eraser with negative pressure.
引文
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[2]仝世学,褚庆忠,李全通,等.基于静电吸附原理的光能无尘黑板擦的研究[J].科学技术创新,2018(7):194-195.
[3]张荆沙,刘阳.便携式电动无尘黑板擦的设计[J].现代商贸工业,2017(23):189-190.
[4]王锦翠.一种无尘黑板擦的设计[J].南方农机,2017,48(24):59.
[5]袁湘月,年兴,朱怡霖,等.新型除尘黑板擦的研究与改进[J].机电产品开发与创新,2012,25(4):50-51.
[6]林肇信,刘天齐,刘逸农.环境保护概论[M].北京:高等教育出版社,1999.
[7]余成荪.家用吸尘器电机的主要性能指标及其测试[J].微特电机,1989(1):1-4.
[8]钱胜,王孟鸿,何远营,等.计算流体力学原理及其在复杂空间结构表面风压数值模拟中的应用:第十三届全国现代结构工程学术研讨会论文集[C].天津:2013.
[9]罗若.连续性方程应用存在问题的研究[J].时代农机,2018,45(3):149-150.
[10]陆桂林,朱仲文.离心风机涡流噪声的研究[J].上海交通大学学报,1989,23(5):103-108.