Electric motor, in particular for a centrifugal pump

摘要

Electric motors with forced-cooling of the terminal box by the use of an impeller wheel involve considerable increased constructional and design costs, and have reduced resultant driving power of the centrifugal pump impeller. To avoid these disadvantages, the lower face of the terminal box (3) is at least sectionally matched to the external contour of the motor housing (4) whereby the terminal box in this region is provided with channel-forming ribs running transversely to the shaft, on its lower face.