| 摘要 |
Airflow patterns from fans and centrifugal blowers that force air into cardcages may be very irregular and unpredictable. Because the amount of cooling provided by fans and centrifugal blowers is based directly upon the velocity of air over the components of the circuit cards within the cardcages, irregular airflow patterns may lead to unreliable operation of circuit cards due to inadequate cooling. In a broad aspect, the present invention comprises a system for controlling the temperatures of circuit cards in cardcages or other enclosures by controlling the flow of air. More particularly, the invention comprises mechanical flow diverters which may divert, deflect, channel or otherwise re-distribute the flow of air to attain a generally common or consistent rate of flow past each circuit card in a cardcage. The invention may be assembled as a discrete part and attached either to the fan, cardcage or other support structure or the invention can be an integral part of the cardcage. The invention maximizes cooling efficiency by modifying the cooling air distribution based on actual requirements and these requirements are proportional to the local heat flux and/or device temperature limits. |
