POWER SUPPLY WITH OBLIQUELY IMPINGING AIRFLOW

摘要

A power supply includes a housing and an air moving device for movingcooling air along a flowpath extending through the housing. A heat sinkextends in alongitudinal direction and is positioned within the flowpath so that anupstream section ofthe flowpath has a flow axis that defines an acute angle with respect to thelongitudinaldirection. Therefore, air flowing from the upstream section of the flowpathimpingesupon and is deflected by the heat sink toward and along a downstream sectionof theflowpath that has a flow axis that extends approximately in the longitudinaldirection. Anelectrical component to be cooled is positioned within the flowpath downstreamfrom theheat sink. A second heat sink extends in the longitudinal direction and islaterallydisplaced from the first heat sink so that the flowpath extends between thefirst heat sinkand the second heat sink. The upstream ends of the heat sinks define astaggeredarrangement, which is characterized by the end of one of the heat sinksextending fartherthen the end of the other heat sink. That staggered arrangement allows for airflowingfrom the upstream section of the flowpath to impinge at an acute angle upon asubstantiallength of the first heat sink. The air moving device is positioned in a cornerof thehousing that is opposite from the staggered arrangement.