초록 ▼

A first honeycomb structure not bonded with brazing filler metal and having a catalyst-carrying layer, and two second honeycomb structures bonded together with brazing filler metal and without applying a catalyst-carrying layer arranged before and after the first honeycomb structure are aligned coax

A first honeycomb structure not bonded with brazing filler metal and having a catalyst-carrying layer, and two second honeycomb structures bonded together with brazing filler metal and without applying a catalyst-carrying layer arranged before and after the first honeycomb structure are aligned coaxially inside a cylindrical casing. The first honeycomb structure preferably has a greater concentration of air passages than the second honeycomb structures and moreover, is spaced a fixed distance from each of the second honeycomb structures.

대표청구항 ▼

A metal carrier for a catalytic converter comprising: a first honeycomb structure in which flat sheet material composed of thin flat metal sheet in strip form and corrugated sheet material composed of thin metal sheet folded continuously into a corrugated surface in strip form are stacked in mutual

A metal carrier for a catalytic converter comprising: a first honeycomb structure in which flat sheet material composed of thin flat metal sheet in strip form and corrugated sheet material composed of thin metal sheet folded continuously into a corrugated surface in strip form are stacked in mutual contact and rolled about an axis into a spiral form without bonding to produce numerous air passages in a reticulate pattern, the surface of the air passages having a catalyst-carrying layer including at least one catalyst, said first honeycomb structure including axially spaced ends; a cylindrical casing arranged coaxially with the first honeycomb structure and enclosing the first honeycomb structure without being bonded thereto; two second honeycomb structures each of which comprising flat sheet material composed of thin flat metal sheet in strip form and corrugated sheet material composed of thin metal sheet folded continuously into a corrugated surface in strip form stacked in mutual contact, rolled about an axis into spiral forms to produce numerous air passages in reticulate pattern, said contacting portions being bonded by brazing filler metal, each said second honeycomb structure including axially spaced ends, one end of one of said second honeycomb structures positioned adjacent to one end of said first honeycomb structure and one end of the other second honeycomb structure positioned adjacent to the other end of said first honeycomb structure, and said second honeycomb structures being bonded to the casing within the casing.