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    • 97. 发明申请
    • Electrostatic filter
    • 静电过滤器
    • US20070137486A1
    • 2007-06-21
    • US11408737
    • 2006-04-18
    • Vance BergeronLaurent Fullana
    • Vance BergeronLaurent Fullana
    • B03C3/00
    • B03C3/12A61L9/205B03C3/011B03C3/06B03C3/155Y10S55/45
    • An electrostatic filter having an improved dielectric is described. The dielectric constitutes a dielectric mat formed from a high porosity non-woven fibers having pores that have a void faction of at least 97%. The dielectric mat is sandwiched by a pair of porous electrodes. The fibers that form the mat have a maximum cross sectional thickness that is less than 100 microns and a length to maximum thickness ratio of greater than 10. The pores are preferably statistically substantially equally sized and open in three dimensions. In various preferred embodiments, the void fraction of the dielectric mat is greater than 99 percent. The mat preferably has a tortuosity of at least 2. The maximal cross sectional width of the fibers is preferably in the range 0.1 to 50 microns. In many implementations, the fibers that form the dielectric mat are formed from either polyester or polypropylene. In some implementations, the cross section of the fibers will have at least one (and preferably two or more) distinct regions of small transversal radius of curvature along its perimeter.
    • 描述了具有改进的电介质的静电过滤器。 电介质构成由具有孔隙至少97%的孔的高孔隙率无纺纤维形成的电介质垫。 电介质垫被一对多孔电极夹持。 形成垫的纤维的最大横截面厚度小于100微米,长度与最大厚度之比大于10.孔优选在统计上基本相同的尺寸和三维开放。 在各种优选实施例中,电介质垫的空隙率大于99%。 垫优选具有至少2的曲折度。纤维的最大横截面宽度优选在0.1至50微米的范围内。 在许多实施方案中,形成电介质垫的纤维由聚酯或聚丙烯形成。 在一些实施方案中,纤维的横截面将具有沿其周边的小的横向曲率半径的至少一个(并且优选地两个或更多个)不同的区域。