Patent ID: 8129877

Claim:
An arrangement for cooling of an electrical machine, wherein the electrical machine comprises a rotor and a stator with an air-gap is arranged between the rotor and the stator, the rotor and the stator include a circulation arrangement to allow the circulation of air for cooling-purposes of the rotor and of the stator, and the rotor and the stator are encapsulated by a shell that is formed to allow the flow of hot air from the rotor and the stator to a heat-exchanger and the shell is formed to allow the flow of cool air from the heat-exchanger back to the rotor and the stator for cooling-purposes, and the shell includes a plurality of corners, each corner gathers the hot air before being guided to the heat-exchanger, the heat exchanger within at least one of the corners, the shell further comprising air-guide-plates located proximate the at least one of the corners to guide the hot air to the heat exchanger.