Patent ID: 8344563

Claim:
A rotating electrical machine comprising: a rotor having a rotational axis; a frame having a hollow shape and including a first end and a second end opposite to the first end in an axial direction along the rotational axis, the frame including a first outer flat surface and a second outer flat surface, the first outer flat surface being provided along the axial direction, the second outer flat surface being provided along the axial direction and being opposite to the first outer flat surface with respect to the rotational axis when viewed from the axial direction; a flange provided at the first end of the frame; a lid provided at the second end of the frame, the flange and the lid supporting the rotor to be rotatable with respect to the frame about the rotational axis; a stator connected to an inner section of the frame and surrounding the rotor; a first fan provided on the first outer flat surface of the frame to blow air into the frame, the first fan being offset toward a first side with respect to the rotational axis in a first direction along the first and second outer flat surfaces when viewed from the axial direction; and a second fan provided on the second outer flat surface of the frame to blow air into the frame, the second fan being offset toward a second side with respect to the rotational axis in the first direction when viewed from the axial direction, the second side being opposite to the first side with respect to the rotational axis in the first direction when viewed from the axial direction.