Patent ID: 6690575
Filing Date: 2004-02-10
Classification: H05K

Abstract:
A digital data processor comprisinga chassis, a central air source, a first circuit board disposed in the chassis, the first circuit board comprising an air flow inlet edge through which cooling air flow enters into a plenum in which one or more circuit components are disposed, an air flow outlet edge through which the air flow exits that plenum, a connector arrangement that provides operational coupling between the first circuit board and the chassis regardless of whether the board is disposed in a first orientation in a slot on a first side of the central air source or in a second orientation in a slot on a second opposing side of the central air source, wherein the second orientation is rotated substantially 180Â° from the first orientation, a second circuit board disposed in the chassis, the second circuit board comprising, at least two portions, each portion having an air flow inlet edge through which cooling air flow enters into a plenum defined on the portion in which one or more circuit components are disposed, an air flow outlet edge through which the air flow exits that plenum, one or more flow-diverting elements that define, at least in part, that portion's impedance to air flow at least one of entering and exiting that plenum, wherein those one or more flow-diverting elements are adapted so that the impedance of that portion is sized in relation to any of (i) the other portion and (ii) the first circuit board, the portions being disposed on opposing sides of the central air source.