초록 ▼

An axial fan for a cooling blower of a vehicle engine has fins with leading and trailing edges, and aeroacoustic optimization is provided by each of the leading edges and trailing edges having a strong forward sweep followed by a strong backward sweep in the manner of a bird's wing or by a straight

An axial fan for a cooling blower of a vehicle engine has fins with leading and trailing edges, and aeroacoustic optimization is provided by each of the leading edges and trailing edges having a strong forward sweep followed by a strong backward sweep in the manner of a bird's wing or by a straight forward sweeps followed by a strong backward sweep.

대표청구항 ▼

[ What is claimed is:] [1.] An axial fan comprising a fan wheel with fins with inner and outer ends, and leading and trailing edges, the inner ends of said fins being fixed to a hub and the outer ends of the fins being fixed to a surrounding ring arranged concentrically with said hub, wherein the le

[ What is claimed is:] [1.] An axial fan comprising a fan wheel with fins with inner and outer ends, and leading and trailing edges, the inner ends of said fins being fixed to a hub and the outer ends of the fins being fixed to a surrounding ring arranged concentrically with said hub, wherein the leading edges and trailing edges of the fins each have a forward sweep portion extending from the hub and into a flow of fluid followed by a relatively straight transition portion that is followed by a backward sweep portion extending from the forward sweep to the ring and away from the flow of fluid.