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    • 3. 发明授权
    • Honeycomb filter
    • 蜂窝过滤器
    • US08496883B2
    • 2013-07-30
    • US13292827
    • 2011-11-09
    • Takashi MizutaniKoji NagataYukio Miyairi
    • Takashi MizutaniKoji NagataYukio Miyairi
    • B01D50/00
    • B01J35/04B01D53/944B01D2255/1021B01D2255/2065B01D2255/2092B01D2255/9032F01N3/022F01N3/0222F01N3/035F01N3/2842F01N2330/60F01N2510/0682
    • A honeycomb filter includes a cell having one open end and another closed end that serves as a fluid flow path and a cell having one closed end and another open end, wherein the cells are alternately disposed. The honeycomb filter includes an undeposited region in an upstream region of a partition portion, which has no trapping layer and has a length of 5% or more and 30% or less of the length of the inlet cell. The upstream region of the partition portion includes an undeposited region having an area of 10% or more of that of the cell in a cross-section perpendicular to the exhaust gas flow direction. The undeposited region with no trapping layer in the upstream region decreases the permeation resistance of the partition portion in the upstream region and facilitates fluid passage through the partition portion in the upstream region.
    • 蜂窝过滤器包括具有一个开口端的单元和用作流体流动通道的另一个封闭端,以及具有一个封闭端和另一个开口端的单元,其中所述单元交替布置。 蜂窝过滤器包括在分隔部分的上游区域中的未沉积区域,其没有捕获层,并且具有入口池的长度的5%以上且30%以下的长度。 分隔部的上游区域包括与废气流动方向垂直的截面的面积为电池单元面积的10%以上的未沉积区域。 在上游区域中没有捕获层的未沉积区域降低了上游区域中的分隔部分的渗透阻力,并且便于流体通过上游区域中的分隔部分。
    • 8. 发明授权
    • Honeycomb filter
    • 蜂窝过滤器
    • US08293183B2
    • 2012-10-23
    • US13292757
    • 2011-11-09
    • Takashi MizutaniKoji NagataYukio Miyairi
    • Takashi MizutaniKoji NagataYukio Miyairi
    • B01D50/00
    • B01D46/2474B01D53/944B01D2255/9155B01J35/04F01N3/0222F01N3/035F01N2330/60F01N2510/0682Y02T10/20
    • A honeycomb filter includes a partition portion having a thickness tp of 150 μm or more and 460 μm or less and a trapping layer having an average thickness tAve of 5 μm or more and 80 μm or less, wherein a film thickness ratio Y1 of a downstream thickness tl to an up- and mid-stream thickness thm satisfies a relationship according to formula (1), wherein a film thickness ratio Y2 of the maximum thickness tmax of a trapping layer to the average thickness tAve of the trapping layer satisfies a relationship according to formula (2), and wherein a cell has a hydraulic diameter HDin satisfying a relationship according to formula (3): −4/375·tAve+2.05≦Y1≦−17/375·tAve+10.23  (1); Y2≦−1/15·tAve+8.33  (2); and 0.95≦HDin≦2.0  (3).
    • 蜂窝过滤器包括具有150μm以上且460μm以下的厚度tp的分隔部和平均厚度tAv​​e为5μm以上且80μm以下的捕获层,其中下游侧的膜厚比Y1 厚度t1与上游和中间厚度thm满足根据式(1)的关系,其中捕获层的最大厚度tmax与捕获层的平均厚度tAv​​e的膜厚比Y2满足关系 (2),其中电池具有满足式(3)的关系的水硬度HDin:-4 / 375·tAve + 2.05≦̸ Y1≦̸ -17 / 375·tAve + 10.23(1); Y2≦̸ -1 / 15·tAve + 8.33(2); 和0.95≦̸ HDin≦̸ 2.0(3)。