Patent ID: 9212589
Filing Date: 2015-12-15
Classification: B01D,F01N,Y02T

Abstract:
1. A honeycomb filter comprising: a plurality of honeycomb segments having partition walls with which a plurality of cells extending from an inflow end surface to an outflow end surface are formed to become through channels of a fluid; a plurality of plugging portions to plug openings of first cells on an inflow end surface side among the cells formed in the honeycomb segments, and openings of second cells other than the first cells on an outflow end surface side; and joining layers which partially join side surfaces of the plurality of honeycomb segments to each other, wherein an area of the outflow end surface of each of the honeycomb segments is larger than an area of the inflow end surface of the honeycomb segment, a shape of a cross section of the honeycomb segment which is vertical to an axial direction from the inflow end surface toward the outflow end surface has a similarity in the axial direction, a thickness of each of the joining layers which join the side surfaces of the honeycomb segments to each other decreases in at least a part of the joining layer in a direction from the inflow end surface side toward the outflow end surface side, a length L wherein the joining layers are formed entirely up to the inflow end surface of the honeycomb segments.