Patent ID: 7843096
Filing Date: 2010-11-30
Classification: H02K

Abstract:
1. A device ( 10 ) with an accommodated electric motor ( 30 ), in particular a blower motor for a heating and air conditioning system, having a substantially cup-shaped accommodating housing ( 12 ), serving as a motor housing, with an accommodation opening ( 32 ) into which the pole housing ( 46 ) of an electric motor ( 30 ) is insertable protruding at least partway into it, and having a retaining flange ( 14 ), located on the accommodating housing ( 12 ), for securing the motor housing ( 12 ) to a support element, and having a control and regulating unit ( 20 ), located on the retaining flange ( 14 ), for operating an electric motor ( 30 ), wherein the accommodating housing ( 12 ) has at least one flat region ( 36 , 40 ) in the circumferential direction, which deviates from a circular shape and corresponds with at least one flat face ( 54 ) of an outer contour of the control and regulating unit ( 20 ), wherein the electric motor has at least two permanent magnet poles ( 44 ) and a pole housing ( 46 ) embodied as a magnetic short-circuit ring, wherein the pole housing ( 46 ) has at least one flat face ( 55 ) of its circumference, which corresponds with the flat region ( 36 , 40 ) of the accommodating housing ( 12 ) of the device, wherein the flat faces ( 36 , 40 , 55 ) of the accommodating housing ( 12 ) and of the pole housing ( 46 ) extend substantially parallel to one another, and wherein the at least one flat face ( 55 ) of the pole housing ( 46 ) of the electric motor ( 30 ) is formed by a plane circumferential region of the pole housing ( 46 ) that extends between the ends, facing toward one another, of two permanent magnet poles ( 44 ), wherein at least one cooling body ( 24 ) is associated with the control and regulating unit ( 20 ), and an outer boundary of the cooling body ( 24 ) extends substantially parallel to the flat face ( 36 , 40 ) on the circumference of the accommodating housing ( 12 ), and wherein the control and regulating unit ( 20 ) extends through the retaining flange ( 14 ) in such a way that the cooling body ( 24 ) protrudes with its structured cooling body surface ( 25 ) out of a top side ( 26 ) of the retaining flange ( 14 ).