Power supply with obliquely impinging airflow

Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices

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Details

H05K 720

Patent

active

060814233

ABSTRACT:
A power supply includes a housing and an air moving device for moving cooling air along a flowpath extending through the housing. A heat sink extends in a longitudinal direction and is positioned within the flowpath so that an upstream section of the flowpath has a flow axis that defines an acute angle with respect to the longitudinal direction. Therefore, air flowing from the upstream section of the flowpath impinges upon and is deflected by the heat sink toward and along a downstream section of the flowpath that has a flow axis that extends approximately in the longitudinal direction. An electrical component to be cooled is positioned within the flowpath downstream from the heat sink. A second heat sink extends in the longitudinal direction and is laterally displaced from the first heat sink so that the flowpath extends between the first heat sink and the second heat sink. The upstream ends of the heat sinks define a staggered arrangement, which is characterized by the end of one of the heat sinks extending farther then the end of the other heat sink. That staggered arrangement allows for air flowing from the upstream section of the flowpath to impinge at an acute angle upon a substantial length of the first heat sink. The air moving device is positioned in a corner of the housing that is opposite from the staggered arrangement.

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