Back flow limiting device for failed redundant parallel fan

摘要

A plurality of parallel fans are mounted for moving side-by-side columns of air in a chassis. A louver member is provided adjacent each fan. Each louver member is bendable from a closed position to an open position by a flow of air generated by its respective fan, and is restrictedly bendable to a closed position, in engagement with a portion of an air passageway, in response to failure of its respective fan.