AIR COOLING AND FILTERING SYSTEM FOR MAGNETIC DISK DATA STORAGE DEVICE

摘要

A closed loop air path extends from the area of the disk hub through holes in disk spacers (16) radially outwards across the disk surfaces, down the vertical walls of the disk enclosure and back through one of two parallel branches to an impellor on the disk hub. One of the parallel branches includes a high impedance, low volume filter (40) to remove debris. The other branch is a low impedance, high volume branch and includes the hot side of a heat exchange (51) which is an integral part of the disk file baseplate (12) on which the disk spindle (17) and positioning system components (11) are mounted. A separate open loop air path outside the disk enclosure includes an impeller surface (18B) on a driving pulley (18) attached to the disk spindle (17) and passes through the cold side of the heat exchanger (51).