초록 ▼

An electrically heatable honeycomb body, in particular a carrier body for a catalytic converter, includes wound, stacked or otherwise layered sheet-metal layers along which a fluid can flow in a primary flow direction, with at least some of the layers being structured. At least one layer has opening

An electrically heatable honeycomb body, in particular a carrier body for a catalytic converter, includes wound, stacked or otherwise layered sheet-metal layers along which a fluid can flow in a primary flow direction, with at least some of the layers being structured. At least one layer has openings for lengthening and/or narrowing an electrically conductive path therein. The structuring of the layers and the formation and disposition of the openings cause adjacent layers to touch substantially only at locations without the openings in the at least one layer. A sheet-metal layer has raised locations and a periodic and in particular approximately undulating or trapezoidal structure with rising and falling regions and a periodicity defining a period. A method for producing slits extending approximately parallel to the raised locations includes delivering the layer with the periodic structure to a shearing device having a periodic structure, having first and second shears facing one another and being offset from one another, and having a periodicity being equal to the periodicity of the period of the layer, and touching the layer with the shearing device only in at least one of the regions. The shears are moved toward one another until the layer is firmly clamped. The first shears are moved relative to the second shears and a slit is created in each of the rising and falling regions by shearing. The shears move away from one another and expel the slit layer.

대표청구항 ▼

An electrically heatable honeycomb body, comprising: a plurality of sheet-metal layers, at least some of said sheet-metal layers having a structure defining channels along which a fluid can flow in a primary flow direction; said sheet-metal layers including at least one first sheet-metal layer havin

An electrically heatable honeycomb body, comprising: a plurality of sheet-metal layers, at least some of said sheet-metal layers having a structure defining channels along which a fluid can flow in a primary flow direction; said sheet-metal layers including at least one first sheet-metal layer having openings of a given formation and disposition formed therein for increasing an electrical resistance of an electrically conductive path in said at least one first sheet-metal layer and defining locations without said openings in said at least one first sheet-metal layer; and said structure of said sheet-metal layers and said formation and disposition of said openings causing sheet-metal layers adjacent to said at least one first sheet metal layer to touch primarily at said locations without said openings in said at least one first sheet-metal layer.