公开(公告)号：DE2611209A1

公开(公告)日：1976-10-14

申请号：DE2611209

申请日：1976-03-17

Applicant: IBM

Inventor： BOLTON IVOR WILLIAM ,  GEORGE JAN CHARLES

IPC: G11B25/04 ,  G11B33/14 ,  G11B5/016 ,  G11B17/32

Abstract: A gas filtering arrangement is described for a magnetic disk file consisting of a closed housing surrounding the magnetic disks. A bearing mounted in a wall of the housing carries a drive shaft upon which the disk (or disks) and a gas impeller are mounted. The impeller pumps gas through a main filter, located within the housing, to clean the gas. The air flow due to the impeller and the disk is arranged to maintain a positive air pressure adjacent the bearing to prevent gas entering the housing through the bearing. A breather filter within the housing connected to the exterior of the housing by a breather aperture is arranged so that during operation a negative pressure is applied to the breather filter to prevent gas leaving the housing through the breather filter.