Apparatus and method for gaseous emissions treatment with induction heating of loop conductors
First Claim
1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of parallel cells for the passage of emissions gas, a closed loop metal wire conductor with the ends of the wire being joined together to close the loop, located in a first set of the plurality of cells and having a first part thereof extending in a first direction along one of the set of cells and a second part thereof extending in a direction opposite to the first direction along another of the set of cells, and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field, thereby to inductively heat the first and second parts by inducing eddy currents therein and to heat the closed loop conductor by inducing current around the loop, the loop conductor permitting aggregation of induced currents and translation of heating thereby into a consistent wire temperature around the loop.
1 Assignment
0 Petitions
Accused Products
Abstract
An assembly for treating gaseous emissions includes a substrate body having cells for the passages of emissions gas. Lengths of metal wire are located in selected ones of the cells and an induction heating coil is mounted adjacent the substrate body for generating a varying electromagnetic field. In this way the metal wires are heated, resulting in heating of the substrate body and heating of exhaust gas flowing in the cells. Individual lengths of wire or wire lengths that are joined together are configured as loop conductors.
6 Citations
23 Claims
- 1. An assembly for treating gaseous emissions comprising a substrate body having a plurality of parallel cells for the passage of emissions gas, a closed loop metal wire conductor with the ends of the wire being joined together to close the loop, located in a first set of the plurality of cells and having a first part thereof extending in a first direction along one of the set of cells and a second part thereof extending in a direction opposite to the first direction along another of the set of cells, and an induction heating coil mounted adjacent the substrate body for generating a varying electromagnetic field, thereby to inductively heat the first and second parts by inducing eddy currents therein and to heat the closed loop conductor by inducing current around the loop, the loop conductor permitting aggregation of induced currents and translation of heating thereby into a consistent wire temperature around the loop.
- 19. A method of treating gaseous emissions using an assembly having an induction heating coil mounted adjacent a substrate body, the substrate body having a plurality of parallel cells for the passage of emissions gas, a closed loop metal wire conductor with the ends of the wire being joined together to close the loop, located in a first set of the plurality of cells and having a first part thereof extending in a first direction along one of the set of cells and a second part thereof extending in a direction opposite to the first direction along another of the set of cells, the method comprising generating a varying electromagnetic field at the coil thereby to inductively heat the metal wire loop conductor and thereby to heat the substrate body.
Specification