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    • 80. 发明授权
    • Honeycomb filter and exhaust gas treatment apparatus
    • 蜂窝式过滤器和废气处理装置
    • US07393377B2
    • 2008-07-01
    • US11065133
    • 2005-02-24
    • Yoshiyuki KasaiTatsuyuki Kuki
    • Yoshiyuki KasaiTatsuyuki Kuki
    • B01D46/00F01N3/022
    • B01D39/2068C04B38/0006C04B2111/0081F01N3/0222F01N2330/06F01N2330/30F01N2330/32F01N2330/34F01N2330/48F01N2340/00Y02T10/20Y10S55/10Y10S55/30Y10T428/24149C04B35/10C04B38/0003C04B35/185C04B35/195C04B35/565
    • In a honeycomb filter in which a plurality of cells are formed by porous partition walls, and a predetermined cell whose one end portion is plugged, and a remaining cell whose other end portion is plugged are alternately arranged in such a manner as to form checked patterns in the opposite end portions. In a section of the filter, a sectional area of the predetermined cell is different from that of the remaining cell, a value of a ratio of a channel hydraulic diameter of the cell having a large sectional area to that of the cell having a small sectional area is 1.2 or more, at least a sectional shape of the cell having the large sectional area is a quadrangular shape whose portion corresponding to at least one corner portion is circular, and a value of a ratio of minimum thickness of a portion (intersection portion) in which the partition walls cross one another to a thickness of each partition wall 2 is 0.7 or more and less than 1.3. The honeycomb filter is capable of inhibiting a fluid inflow-side end face (opening of an inflow-side cell) from being closed by particulates and the like, and maintaining high strength.
    • 在多孔隔壁形成有多个单电池的蜂窝过滤器和一端部插入的规定单元,另一方端部插入的剩余单元交替配置,形成检查图案 在相对的端部。 在过滤器的一部分中,预定电池的截面积与剩余电池的截面积不同,具有大截面的电池的通道水力直径与具有小截面的电池单元的通道水力直径的比值 面积为1.2以上,截面积大的电池单元的截面形状为至少与一个角部对应的部分为圆形的四边形状,并且部分(交叉部分)的最小厚度的比值 ),其中分隔壁彼此交叉以至每个分隔壁2的厚度为0.7以上且小于1.3。 蜂窝过滤器能够抑制流体流入侧端面(流入侧电池的开口)被微粒等封闭,并且保持高强度。