Patent ID: 7665306
Filing Date: 2010-02-23
Classification: F23R,Y02T

Abstract:
1. A combustor, comprising: an inner liner; an outer liner circumscribing the inner liner and forming a combustion chamber with the inner liner; a combustor dome coupled to the inner and outer liners; and a plurality of heat shields coupled to combustor dome, each of the heat shields comprising a heat shield plate defined by a first edge facing the inner liner and a second edge facing the outer liner; and a plurality of baffles extending from the heat shield plate, wherein each of the plurality of baffles comprises two parallel ribs and a connection portion connecting the two parallel ribs to form a closed portion and an opposite open portion, the open portion of each of the plurality of baffles facing the first edge or the second edge, and wherein the combustor dome defines a plurality of impingement openings for directing a plurality of cooling jets of cooling air onto each of the plurality of heat shields, and wherein the plurality of baffles direct substantially all of the cooling air to the first and second edges of the heat shield plate, and wherein the combustor has a central axis, wherein the combustor dome defines a plurality of rows of impingement openings for directing a plurality of cooling jets onto each of the plurality of heat shields, the plurality of rows including a first row, a second row, and a third row that are generally aligned with a respective radial of the central axis of the combustor, and wherein the plurality of baffles include a first baffle receiving at least one of the plurality of cooling jets of the first row, and a second baffle adjacent to the first baffle and receiving at least one of the plurality of cooling jets of the third row.