Disk File Air Filtration
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01
A disk file employs sintered mesh spacers between the disks to enable both circulation and filtration of air passing around the disks via an internally vented hub. The centrifugal pumping action of the disks circulates the air, and the spacers ensure that 100% filtered air is supplied between the disks, eliminating unwanted debris. In the drawing showing a part section through a disk file, the disk spacers 1 are manufactured as direct replacements for existing spacers but are made as sintered metal air filters. The excessive air flow experienced by traditionally vented disks may be controlled by varying the density (impedance) of the spacers 1, and air noise is minimal. To obtain the mechanical sizes required, the sintered spacer/filters 1 are ground on the faces meeting the disks 6.