Patent ID: 8992177
Filing Date: 2015-03-31
Classification: F01D,F05D

Abstract:
1. An apparatus for cooling a rotating part having a cooling channels therein, said rotating part attaching to a disk rotating about an axis, said disk having a conduit for feeding a cooling fluid to said cooling channel, said apparatus comprising: a first impeller rotating with said disk and in register with said conduit and an outer periphery of said disk, said first impeller directing said cooling fluid to said conduit, wherein said first impeller has a radial portion and an extension, said radial portion and said extension form a J-shape; and a second impeller adjacent said first impeller, wherein said second impeller lacks an extension, wherein said radial portion and said second impeller each have a saddle disposed at a radially intermediate portion thereof, wherein said radial portion and said second impeller each have an upper peak and a lower peak, said saddles disposed radially between said upper and lower peaks, said saddles each having a dimension less than both said lower and upper peaks in a direction parallel to said axis.