Localized electrical heating of honeycomb structures
AssigneeCorning Incorporated
InventorG. Daniel Lipp
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Abstract
Electrically conductive honeycomb structures are provided which include an inlet face, an outlet face, a set of short insulating slots extending from the inlet face towards the outlet face, and a set of long insulating slots extending from the outlet face towards the inlet face. The short and long slots are interdigitated so that electrical current flowing parallel to the inlet face must follow a serpentine path around the ends of the slots. The serpentine path is located closer to the inlet face than to the outlet face so that the heating effect of the current is localized near the inlet face.
Claims7
A honeycomb structure comprising:
- (a) an electrically conductive honeycomb body having first and second faces and a plurality of cells within the body which extend between the faces;
- (b) a first set of electrically non-conductive regions formed in the body and extending from the first face towards the second face;
- and
- (c) a second set of electrically non-conductive regions formed in the body and extending from the second face towards the first face;
- wherein the electrically non-conductive regions of the first set extend into the body a shorter distance than the electrically non-conductive regions of the second set and wherein the first and second sets of electrically non-conductive regions are interdigitated.
Dependencies are inferred from the claim text.