Patent ID: 7295434

Claim:
An electronically controlled electric fan ( 10 ) cooled by pressurized ambient air, said electric fan comprising: a motor ( 11 ) furnished with a cover ( 12 ), a mechanical assembly rotating a fan wheel ( 15 ) and a casing ( 13 ), said motor housing at least its electronic control circuit ( 14 ) and comprising at least one inlet orifice (I) and one outlet orifice (S) for the pressurized ambient air, the fan wheel ( 15 ), a motor support ( 16 ), said ambient air being suitable for passing through the motor, and its mechanical assembly and the support, said electric fan being characterized in that it also comprises: a confinement means ( 20 ) placed inside the motor so as to confine the pressurized ambient air between: a heat sink ( 18 ) integral with the electronic control circuit ( 14 ), and a portion of the motor comprising no sensitive electronic components, wherein the confinement means is a seal, placed between the electronic control circuit ( 14 ) and the casing ( 13 ) of the motor, said seal channeling the pressurized ambient air at least onto said heat sink ( 18 ) situated on a surface of the electronic control circuit without electronic components.