公开(公告)号：CA747568A

公开(公告)日：1966-11-29

申请号：CA747568D

Applicant: IBM

Inventor： BOLTON IVOR W ,  TAUB DANIEL M ,  OWEN CHARLES E ,  GOWER KENNETH N ,  PROUDMAN ANTONY ,  WARWICK WILLIAM A

公开(公告)号：CA1143665A

公开(公告)日：1983-03-29

申请号：CA350324

申请日：1980-04-22

Applicant: IBM

Inventor： BOLTON IVOR W

IPC: G11B33/14 ,  G11B23/02 ,  B01D53/26

Abstract: Relative humidity within a machine enclosure is controlled by means of a desiccant and a circulatory breather flow through the enclosure walls. The desiccant absorbs moisture during power off periods to keep the relative humidity down. During power on periods the enclosure temperature rises which drives off the absorbed moisture from the desiccant. Operation of the machine also creates a pressure differential between two breather orifices in the enclosure walls so that there is a circulatory exchange of air between the enclosure and atmosphere. If the desiccant has absorbed a significant amount of moisture during power off periods, the moisture concentration within the enclosure will exceed that outside and there will be a net expulsion of moisture to partially recharge the desiccant.

公开(公告)号：FR2306503A1

公开(公告)日：1976-10-29

申请号：FR7605920

申请日：1976-02-25

Applicant: IBM

Inventor： BOLTON IVOR W ,  GEORGE IAN C

IPC: G11B25/04 ,  G11B33/14 ,  G11C5/00

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.