FIELD: power industry.
SUBSTANCE: two-blade windwheel made from sheet material is a solid cut from cylindrical tube as per the outline of the pattern applied to the tube along its generatrix and the symmetry axis of which coincides with gravity centre of windwheel. Windwheel can be made so that angle of decalage of each blade is made so that it decreases from the bottom to the blade end by narrowing the pattern ends. Blade can be covered with the material so that blade profile was similar to wing-shaped one; at that, filler can be introduced to the cavity of formed profile on concave side.
EFFECT: simple design of windwheel ensures reduction of production costs at simultaneous profile accuracy.
3 cl, 3 dwg
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