US 9,810,073 B2
Turbine blade having swirling cooling channel and cooling method thereof
Sung Chul Jung, Daejeon (KR)
Assigned to DOOSAN HEAVY INDUSTRIES & CONSTRUCTION Co., LTD, Gyeongsangnam-do (KR)
Filed by DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD., Gyeongsangnam-do (KR)
Filed on Dec. 15, 2014, as Appl. No. 14/570,639.
Prior Publication US 2015/0198049 A1, Jul. 16, 2015
Int. Cl. F01D 5/18 (2006.01)
CPC F01D 5/187 (2013.01) [F01D 5/186 (2013.01); F05D 2260/2212 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A turbine blade, comprising:
a blade unit having a leading edge, a trailing edge, and a cooling channel to pass cooling air there through, the cooling channel including
a first channel defined in the blade unit adjacent to the leading edge and extending in a longitudinal direction of the blade unit, and
a second channel defined in the blade unit between the first channel and the trailing edge and extending in the longitudinal direction;
a root unit including an air entrance, the air entrance including
a first entrance communicating with the first channel, the first entrance having a first swirl portion to provide a swirl flow of air in the longitudinal direction along the first channel, and
a second entrance communicating with the second channel, the second entrance having a second swirl portion to provide a swirl flow of air in the longitudinal direction along the second channel; and
a platform unit disposed between the blade unit and the root unit.