Heating member for a vehicle exhaust gas purification device
AssigneeFaurecia Systemes D'Echappement
InventorsGuillaume Aufranc, Christophe Tournier, Xavier Bartolo
Life of this patent
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Abstract
A heating member for a vehicle exhaust gas purification device includes an electrically conductive outer peripheral frame that has a geometric center and is symmetrical about an axis. An electrically conductive central support is centered on the geometric center, and a perforated heating grid is centered on the geometric center. The heating grid extends between the electrically conductive central support and the electrically conductive outer peripheral frame. The heating grid is formed of a plurality of strands connected by nodes, with the plurality of strands delimiting openings therebetween.
Claims13
A heating member for a vehicle exhaust gas purification device comprising:
- an electrically conductive outer peripheral frame having a geometric center and being symmetrical about an axis;
- an electrically conductive central support centered on the geometric center;
- and
- a perforated heating grid centered on the geometric center, the perforated heating grid extending between the electrically conductive central support and the electrically conductive outer peripheral frame, the perforated heating grid being formed of a plurality of strands connected by nodes, the plurality of strands delimiting openings between the plurality of strands, wherein the heating member comprises an electrically conductive separation ring centered on the geometric center, the perforated heating grid having a first mesh of strands from the plurality of strands, the first mesh of strands being between the electrically conductive separation ring and the electrically conductive outer peripheral frame, and a second mesh of strands from the plurality of strands, the second mesh of strands being between the electrically conductive separation ring and the electrically conductive central support, the perforated heating grid comprising in each of the first and second mesh of strands a plurality of elongate heating elements.
A heating member for a vehicle exhaust gas purification device comprising:
- an electrically conductive outer peripheral frame having a geometric center and being symmetrical about an axis;
- an electrically conductive central support centered on the geometric center;
- and
- a perforated heating grid centered on the geometric center, the perforated heating grid extending between the electrically conductive central support and the electrically conductive outer peripheral frame, the perforated heating grid being formed of a plurality of strands connected by nodes, the plurality of strands delimiting openings between the plurality of strands, wherein the perforated heating grid is formed of a plurality of elongate heating elements, the plurality of elongate heating elements occupying a respective angular sector of the perforated heating grid and being arranged in a zigzag pattern within that respective angular sector to form a succession of strands from the plurality of strands that are connected by the nodes, and being linked by the nodes to the plurality of elongate heating elements occupying adjacent angular sectors, and including a plurality of outer connection legs connecting the plurality of elongate heating elements to the electrically conductive outer peripheral frame, each outer connection leg being capable of deforming to absorb radial thermal expansion of the perforated heating grid during operation of the heating member.
Dependencies are inferred from the claim text.