FIELD: machine building.
SUBSTANCE: at least one cooling channel is made in wall. The wall has internal and external surfaces and can be cooled by means of cool air moving through the said channel. The channel has an orifice and a dispersion section. On one side the orifice comes into internal surface, while on another side it comes out into the dispersion section forming a mouth. The dispersion section expands around the mouth and comes onto external surface. Also, the dispersion section has in essence a flat bottom part, inclined in thickness of the wall and passing in front from the mouth in the direction of cold air flow, and an edge zone passing behind on sides and in front of the mouth. The edge zone connects sides of the front bottom part. The front bottom part and the edge zone are fit into a cone the end of which is rounded and conic surface of which has local flat surface.
EFFECT: reduced time for making cooling channel and reduced expenditures.
12 cl, 5 dwg
