Hydraulic machine impeller wheel

摘要

In the present invention, there is disclosed a hydraulic machine impeller wheel comprised of a supporting disc (1) provided with blades (2) creating through-flow channels (3), wherein the blades (2) are arranged in peripheral direction on the supporting disc (1) irregularly such that at least one of the through-flow channels (3) has different shape and a different through-flow cross section whereas the particular blades (2) of an irregular blade cascade are created in the way that their basic parameters the inlet angle ({betai1}), the outlet angle ({betai2}) and the wrapping angle ({gamma}) are in relation {beta}i1max = {beta}i1 +/- 20 degrees and {beta}i2max = {beta}i2 +/- 20 degrees and {gamma}imax = {gamma} +- 20 degrees and the size of inlet spacing (t) on inlet edges (21) and outlet spacing (T) on outlet edges (22) of the blades (2) are in relation t max = t +- 20 percent t and Timax = T +- 20 percent T.