Patent ID: 6042348
Filing Date: 2000-03-28
Classification: F04D,H05K

Abstract:
A forced air cooling system for heat generating equipment comprising:at least two fans, each of said fans having an air inlet end and an air outlet end;a structure for supporting said at least two fans so that said at least two fans when operative draw air into their air inlet ends from a common enclosed space adjacent said equipment and exhaust the drawn air from their air outlet ends away from said common enclosed space in a substantially horizontal direction; and,at least two protective shields each associated with a respective one of said at least two fans, each of said at least two shields being adjacent and overlying the air outlet end of its respective fan, each of said at least two shields including a pivotally mounted solid member arranged (a) to pivot away from the air outlet end when the respective fan is operative and air is exhausted outwardly from its air outlet end and (b) to pivot toward the air outlet end to cover the air outlet end when the respective fan is inoperative and air is drawn into its air outlet end,each of said at least two protective shields comprise a plurality of substantially planar solid members pivotally disposed across and intersecting with the outlet, in an equally spaced and overlapping louver arrangement, said solid members are arranged to pivot each about a respective one of a plurality of parallel axes.