Airflow System for Disk Drive
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
An actuator bypass internal recirculating airflow system in a disk drive enables reliably purging contamination therefrom. Although a major source of particle generation within the file or disk drive is the actuator assembly, it is only necessary for air to flow past the actuator rather than through it to provide satisfactory performance. Because of this characteristic, the actuator assembly can be a completely sealed enclosure. This allows the actuator magnets to be merged to the file outside the clean room during manufacture, thereby providing the opportunity for a cleaner disk enclosure assembly. The airflow system in the disk drive includes a disk hub assembly 20 (Fig. 1) which has a hub cap 25 with multiple fan blades. This allows hub assembly 20 to function as a centrifugal air pump.