Cooling of an electronic unit by means of the lid of the air-gap sleeve

摘要

The motor has an impeller wheel chamber (4), power electronics in an electronic module (20) and a slotted tube (9) open at both ends between the stator and rotor. The slotted tube separates the hydraulic volume carrying the delivery medium from the electric drive chamber. The end of the tube remote from the impeller wheel chamber is sealed closed by a cover (14), bringing the electronic module into thermal contact with the rear of the cover.