Patent ID: 9366143
Filing Date: 2016-06-14
CPC Classification: F01D,F05D

Claim Text:
1. A turbine airfoil comprising: a root; a tip; a pressure side wall; a suction side wall; a leading edge connecting the pressure side wall to the suction side wall; a trailing edge connecting the pressure side wall to the suction side wall; a first plurality of cooling apertures defined through the trailing edge; and a cooling arrangement configured to route a cooling fluid from an entrance of the cooling arrangement to an exit of the cooling arrangement, the exit coinciding with at least one of the first plurality of cooling apertures; wherein: the first arrangement of serially interconnected flow sections comprises at least a first flow section, a second flow section, and a third flow section; the first arrangement of serially interconnected flow sections is configured to pass the cooling fluid through at least a portion of the turbine airfoil, and remove heat therefrom; the first section defines a first plurality of first flow paths extending between the entrance and the second section; the first section is configured to effect flow of the cooling fluid between the entrance and the second section; the third section defines a third plurality of third flow paths extending between the second section and the exit, the third section configured to effect flow of the cooling fluid from the second section and through the third flow paths; the second section defines one or more second flow paths extending between the first section and the third section, the second section configured to effect flow of the cooling fluid between the first flow paths and the third flow paths; the first section is fluidically coupled to said second section solely by one or more first transition chamber; each first transition chamber defines a corresponding transition flow path that is substantially orthogonal to the first plurality of first flow paths and that is substantially orthogonal to the one or more second flow paths; and the number of second flow paths being less than the number of first flow paths.