Patent ID: 7390172
Filing Date: 2008-06-24
Classification: F04D

Abstract:
1. An arrangement for cooling a circuit board, comprising: a generally flat carrier frame; elements connecting said frame to the circuit board and supporting said frame thereon; an annular air passthrough aperture; and a miniature fan that is mounted on a first side of the carrier frame facing away from the circuit board and at a distance from the circuit board, and is equipped with a fan wheel that, during operation, rotates about a rotation axis (A) and transports air through the annular air passthrough aperture, there being provided on the carrier frame, on the side of the air passthrough aperture facing toward the circuit board, an air-directing element which serves to deflect the flow direction of at least a portion of the air transported, during operation, through the air passthrough aperture, wherein the air-directing member is formed with penetrations in order to direct, through a wall of the air-directing member, a portion of the air flow delivered by the fan.