公开(公告)号：US08747511B2

公开(公告)日：2014-06-10

申请号：US13764009

申请日：2013-02-11

Applicant: NGK Insulators, Ltd.

Inventor： Koji Motoki ,  Hiroyuki Suenobu ,  Eriko Kodama

IPC: B01D39/00 ,  B01D39/06 ,  B01D24/00 ,  B01D39/14 ,  B01D50/00

CPC classification number: B01D39/2068 ,  B01D46/2429 ,  B01D46/2444 ,  B01D2046/2433 ,  B01D2046/2437 ,  B82Y30/00 ,  C04B35/195 ,  C04B38/0009 ,  C04B2111/00793 ,  C04B2201/40 ,  C04B2235/3203 ,  C04B2235/3218 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/349 ,  C04B2235/5208 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  F01N3/0222 ,  C04B38/0054 ,  C04B38/0074

Abstract: A honeycomb filter includes a tubular honeycomb structure having porous partition walls with which there are formed a plurality of cells extending from one end surface to the other end surface to become through channels of a fluid; and plugged portions arranged in one open end portion of each of predetermined cells and the other open end portion of each of the remaining cells, porosities of the partition walls are 46% or less, a pore volume ratio of pores having pore diameters of 40 μm or more is 7.5% or less, and a pore volume ratio of pores having pore diameters of 10 μm or less is 25% or less, a permeability of the honeycomb structure is 0.8 μm2 or more, and a coefficient of thermal expansion of the honeycomb structure in a range of 40 to 800° C. is 1.0×10−6/° C. or less.

Abstract translation: 蜂窝过滤器包括具有多孔分隔壁的管状蜂窝结构，其中形成有从一个端面延伸到另一端面的多个单元，以通过流体通道; 并且每个预定单元的一个开口端部分布置的封闭部分和每个剩余单元的另一个开口端部分隔壁的孔隙率为46％以下，孔径为40μm的孔的孔体积比 以上，以下，孔径为10μm以下的孔的孔体积比为25％以下，蜂窝结构体的导磁率为0.8μm2以上，蜂窝状体的热膨胀系数 在40〜800℃的范围内的结构为1.0×10 -6 /℃以下。