Patent ID: 6709498
Filing Date: 2004-03-23
Classification: B01D,G11B

Abstract:
A filter construction for use in a disk drive assembly, the filter construction comprising:(a) a housing, configured for placement in a disk drive assembly containing a rotating disk, the housing comprising: (i) an air inlet and an air outlet; the air inlet of the housing configured to be positioned farther from the center of the rotating disk than the air outlet; and (ii) an air scoop and a channel connecting the air scoop with the air outlet; wherein the air scoop contains an opening that is positioned at a greater than 15 degree angle to the edge of the rotating disk, and the air outlet is substantially parallel to the edge of the rotating disk; (b) an adsorbent filter element positioned within the housing and in fluid communication with the air inlet and the air outlet, the adsorbent filter element positioned to filter air entering the drive assembly; and (c) a recirculation filter element positioned in the air channel between the air scoop and the air outlet to filter air circulating within the drive assembly; wherein the recirculation filter has a width exposed to air passing through the air channel, and the recirculation filter is positioned in the air channel so that the exposed width is greater than the air channel width at the recirculation filter position.