Fundamental Investigation of Charge Injection Type of Electrostatic Oil Filter and its Trial Manufacture

电荷注入式静电滤油机的基础研究及试制

• 批准号: 16560117
• 负责人: YANADA Hideki
• 金额: $ 1.98万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560117/
• 关键词: Electrostatic filter; Charge injection; Insulating liquid; Lubricating oil; DC electric field; Reuse; Contamination control

A simple model of charge injection type of electrostatic oil filter was made which consists of two smooth plate electrodes and an emitter electrode, which has sharp projections on its both surfaces in order for electric charges to be injected under the application of a high DC voltage. The effects of various factors such as the configuration of emitter electrode, the magnitude and polarity of applied voltage, flow rate and physical properties of oils on the filtration speed were investigated using 18 types of oils, in which a test powder was mixed at a fixed concentration. The filtration speed was increased by virtue of charge injection for the majority of the oils used; for a few oils, the filtration speed was hardly changed by using the emitter electrode ; in addition, the filtration speed was decreased to some degree for a few oils by charge injection. The filtration speed was increased with increasing number of sharp projections, with decreasing electrode spacing and emitter thickness, with increasing applied voltage and flow rate, but the filtration speed tended to be saturated or was, in some cases, decreased. An ion drag flow generated from the tips of the projections towards the smooth plate electrodes might detach particles captured on the plate electrodes for some oils under such conditions as relatively large applied voltage or small electrode spacing. The experiments showed that there was no correlation between the viscosity of oil and the filtration speed but that a weak correlation exists between the conductivity of oil and the filtration speed. The filtration speed of oils having relatively high conductivities was slower than that of oils having relatively low conductivities. No correlation was found out between the physical properties of oils and the degree of the increase in the filtration speed under charge injection.

建立了一种简单的电荷注入式静电滤油器模型，该滤油器由两个光滑的平板电极和一个发射极组成，发射极在其两个表面上具有尖锐的凸起，以便在施加高直流电压的情况下注入电荷。使用18种类型的油，其中测试粉末以固定浓度混合，研究了各种因素如发射极的配置、施加电压的大小和极性、流速和油的物理性质对过滤速度的影响。对于大多数使用的油，电荷注入可以提高过滤速度;对于少数油，使用发射电极几乎没有改变过滤速度;此外，对于少数油，电荷注入在一定程度上降低了过滤速度。过滤速度随着尖锐突起的数量的增加而增加，随着电极间距和发射体厚度的减小而增加，随着施加电压和流速的增加而增加，但是过滤速度趋于饱和或者在某些情况下下降。对于某些油，在相对大的施加电压或小的电极间距的条件下，从突起的尖端朝向光滑板电极产生的离子拖曳流可能分离在板电极上捕获的颗粒。实验结果表明，过滤速度与油的粘度无相关性，而与油的电导率有较弱的相关性。具有相对高的传导率的油的过滤速度比具有相对低的传导率的油的过滤速度慢。没有发现油的物理性质和在电荷注入下的过滤速度的增加的程度之间的相关性。

项目成果

Fundamental investigation of charge-injection type ofelectrostatic oil filter (effect of type of oil)

电荷注入式静电滤油器的基础研究（油类型的影响）

• 发表时间: 2006
• 期刊: Proceedings of the 2006 Spring-Term Meeting of Fluid Power Systems, The Japan Fluid Power System Society (in Japanese)
• 作者: Yanada;H.;Tran;K.D.
• 通讯作者: K.D.

絶縁性液体用電荷注入式静電フィルタの基礎研究(性能に及ぼす諸因子の影響)

绝缘液体电荷注入式静电过滤器的基础研究（各种因素对性能的影响）

• 发表时间: 2006
• 期刊: 日本機械学会講演論文集 No.068-1
• 作者: 柳田秀記;小島 優;Tran Khanh Duong
• 通讯作者: Tran Khanh Duong

Fundamental Investigation of Charge-Injection Type of Electrostatic Oil Filter

电荷注入式静电滤油机的基础研究

• 发表时间: 2005
• 期刊: The 1st International Conference of Manufacturing, Machine Design and Tribology, Seoul, 2005 (CD)
• 作者: Yanada H.;Masuoka T;Yoshida Y.
• 通讯作者: Yoshida Y.

電荷注入式静電フィルタの基礎研究(力学的因子の影響)

电荷注入式静电过滤器的基础研究（机械因素的影响）

• 发表时间: 2004
• 期刊: H16年秋季フルードパワーシステム講演会講演論文集
• 作者: 柳田秀記;吉田 豊;升岡達宏
• 通讯作者: 升岡達宏

Effects of various factors on filtration speed of charge injection type of electrostatic oil filter

各种因素对电荷注入式静电滤油机过滤速度的影响

• 发表时间: 2006
• 期刊: Proceedings of ASIATRIB 2006 KANAZAWA, JAPAN
• 作者: Hideki Yanada;Khanh Duong Tran;Yu Kojima
• 通讯作者: Yu Kojima