High Efficiency Quiet Reversible Fan The present invention relates to centrifugal fans which must be able to create an air flow entering through the gill and leaving the periphery regardless of the direction of rotation of said fan. Applications of such a fan: Rail traction field: subways, regional express transport, Intercity, high speed trains, trolley buses, trams, electric vehicles In the field intended for transport, maritime or the like. In industrial mechanisms. This fan has blades placed radially with respect to the axis of rotation (18), said blades having a "sygne" silhouette with extended wings (Figure 2)
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