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Filter Arrangement for Rigid Disk File Internal Air Circulation

IP.com Disclosure Number: IPCOM000046496D
Original Publication Date: 1983-Jul-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Elliott, JF: AUTHOR [+2]

Abstract

The figure illustrates half an axial section of a typical disk assembly that rotates in unison with a shaft 5. The disk assembly includes a hub 6 which carries a series of disks 7 separated by ported spacer rings 8 and a clamp ring 9 that is secured to the hub by a series of bolts 10. Shaft 5 extends through the housing wall 12 and is supported by a bearing 13.

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Filter Arrangement for Rigid Disk File Internal Air Circulation

The figure illustrates half an axial section of a typical disk assembly that rotates in unison with a shaft 5. The disk assembly includes a hub 6 which carries a series of disks 7 separated by ported spacer rings 8 and a clamp ring 9 that is secured to the hub by a series of bolts 10. Shaft 5 extends through the housing wall 12 and is supported by a bearing 13.

The air-flow path over the disk surfaces is radially outward from the hub cavity 15, through the aligned ports in hub 6 and spacers 8, along the surfaces of disks 7, and returning along the housing wall 12 beneath the lower flange l7 of the hub. Particulate matter is filtered from the recirculating air by a filter 20 which is disposed in the space between wall 12 and flange 17. Filter 20 is secured to the housing wall 12 with a minimal clearance gap between the filter and flange
17. The reduced pressure within hub enclosure 15 causes air to flow through filter 20. The clearance gap between the filter and flange is affected by the air flow induced by the lowermost disk surface which is radially adjoining. Accordingly, the air flow through the clearance gap is either negligible or radially outward. This structure is adapted for use with a sealed disk enclosure or a recirculating type equipped with a breather filter which maintains pressure equilibrium with the outside atmosphere.

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