Patent ID: 8371364

Claim:
A regulator, comprising: a cooling body for an electric machine including a heat exchange surface to which a cooling air stream may be applied during operation of the electric machine, the cooling body having an inflow region in which the cooling air stream impinges upon the heat exchange surface, and an outflow region from where the cooling air stream leaves the heat exchange surface; wherein: the inflow region includes a saddle-shaped elevation, which has at least two deflecting surfaces that are aligned obliquely to a direction of incoming cooling air and point in a direction of adjacent subsections of the outflow region disposed on opposite sides of the elevation; the outflow region includes a plurality of rib-shaped projections and a plurality of pin-shaped or needle-shaped projections disposed in each said subsection of the outflow region located between the saddle-shaped elevation and the rib-shaped projections; each of the rib-shaped projections extends linearly along a plane of the heat exchange surface, away from the inflow region and towards an adjacent edge of the heat exchange surface, adjacent ones of the rib-shaped projections forming channels through which air deflected by one of the at least two deflecting surfaces is directed outward toward a respective adjacent edge; and adjacent ones of the pin-shaped or needle-shaped projections are offset to each other along directions of deflected air flow.