FIELD: machine building.
SUBSTANCE: blade for a turbomachine includes an airfoil portion and a root portion. Airfoil portion comprises an outer wall, first and second cavities. Outer wall has a pressure side, a suction side, a leading edge and a trailing edge. Outer wall extends between the leading edge and the trailing edge of the airfoil portion. First cavity is located between the pressure side of the outer wall and the first inner wall. Second cavity is located between the suction side of the outer wall and the second inner wall. First inner wall and second inner wall form a receiving cavity located therebetween and fluidly connected to both the first cavity and the second cavity. Cooling fluid in the first cavity and the second cavity is conducted in a direction from the trailing edge to the leading edge. Cooling fluid in the receiving cavity is conducted in a direction from the leading edge to the trailing edge.
EFFECT: invention is aimed at increasing the efficiency of cooling the blade.
13 cl, 3 dwg
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