Patent ID: 7101157
Filing Date: 2006-09-05
Classification: F04D

Abstract:
1. An electromotor including electromotor self-ventilation, the electromotor comprising: a cooling wheel provided on a rotor of the electromotor, the cooling wheel being configured to generate a cooling air stream flowing through said electromotor; motor electronics arranged against direct contact with said cooling air stream, said motor electronics being chambered within a housing compartment bordered by a cooling attachment, said cooling air stream being conveyed past said housing compartment in such a manner that said cooling air stream flows over an outside surface of said cooling attachment, in which the outside surface is turned away from said motor electronics, and an inside surface of said cooling attachment, in which the inside surface is turned toward said motor electronics, with the outside surfaces standing in heat-conducting contact with components of said motor electronics to be cooled; a fan and a fan housing, the fan housing for conveying an air flow of working air, the fan housing including a wall section separating a first interior space of said fan housing including said fan airtight from a second interior space housing the cooling wheel so that said cooling air stream flowing through said electromotor is separated and independent of the air flow of the working air conveyed by said fan; wherein said motor electronics include a supporting plate, which mounts the motor electronics and extends perpendicular to the axis of the electromotor, said cooling attachment including a bottom wall, which is generally parallel to said supporting plate, and said bottom wall of said cooling attachment bordering said housing compartment on a side that is axially turned toward said electromotor, and a separate lid component, which is connected to said cooling attachment, bordering the other axial side that faces away from said electromotor, said housing compartment accommodating said supporting plate; and wherein the inside surface is turned toward the supporting plate, said bottom wall forming a face structure that is matched to said supporting plate of the motor electronics.