Cooler for electric machine has heat exchanger with two adjacent fluid channels, centrifugal fans mounted in chambers offset with respect to center, to blow fluids in opposite directions

摘要

The cooling arrangement has a heat exchanger with two adjacent channels (2A,2B) for the two fluids, a first housing with a first chamber connected to the upstream end of the first channel and a first centrifugal fan (3) for blowing the first fluid into the first channel. The fan is mounted in the first chamber offset with respect to the center and rotates so that the first fluid is blown to the other side of the chamber. A second housing and chamber contain a similar fan arrangement (4) with an opposite flow direction.