Patent ID: 6504717
Filing Date: 2003-01-07
Classification: H05K

Abstract:
A failure-tolerant high-density electronic component cooling system for cooling electronic components in an enclosure with a first and second open end, the cooling system comprising:a push tray located at the first open end of the enclosure and having a plurality of fans for drawing ambient air into the enclosure and forcing the air over the electronic components in the enclosure; a pull tray located at the second open end of the enclosure and having a plurality of impellers with airflow openings for drawing air over the electronic components and exhausting air outside the enclosure, the pull tray having a plurality of baffles arranged between the impellers so that each impeller exhausts air directly out of the enclosure through a vent area dedicated to the each impeller; and a screen covering each vent area, the screen having an open area of substantially 50%, each impeller having an airflow opening with an airflow resistance which, when combined with the airflow resistance of a screen covering its dedicated vent area, limits air drawn into the enclosure through a dedicated vent area of a failed impeller and prevents the disruption of a uniform airflow over the electronic components.