| 摘要 |
The invention relates to a fan wheel (1) designed as a radial or diagonal fan, comprising a top plate (2) with an inlet port (4), a base plate (6) and a plurality of fan blades (8) distributed around the inlet port (4) and around an axis of rotation (Z), as well as blade ducts (10) formed respectively between the adjacent fan blades (8) in a circumferential direction. The blade ducts (10) lead radially or diagonally outward from the area of the inlet port (4) and form blow-out ports (11) in the outer region. The blade ducts (10) are designed, with respect to their effective flow cross-section, as large enough that during operation, a turbulent flow with a Reynolds number markedly greater than 2300 is achieved. The top plate (2) and/or the base plate (6) feature/features a non-rotationally symmetric geometry which, with respect to an axial or as the case may be axially parallel direction (Z), has a continuous, point-continuous shape. |
