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Inertia Filter for Disk Files

IP.com Disclosure Number: IPCOM000099249D
Original Publication Date: 1990-Jan-01
Included in the Prior Art Database: 2005-Mar-14
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Fowler, RV: AUTHOR

Abstract

In a magnetic disk file with a rapidly rotating large particles within the disk enclosure may damage disk surface by collision with it. Disclosed is a scoop mechanically collects and retains these large and removes the requirement for a coarse filter on enclosure.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 86% of the total text.

Inertia Filter for Disk Files

       In a magnetic disk file with a rapidly rotating large
particles within the disk enclosure may damage disk surface by
collision with it.  Disclosed is a scoop mechanically collects and
retains these large and removes the requirement for a coarse filter
on enclosure.

      Assembly operations on a disk file can generate large which
become dislodged after the file has been into service and can collide
with the surface of the removing small patches of magnetic media
causing recording errors.  Small particles can be by a fine filter,
but large heavy particles must be by an additional coarse filter
which constitutes an product cost.  Fine particles are carried by the
airstream at a similar velocity to the airstream, large particles
move at lower velocity and will bounce tumble inside the enclosure.
The difference in inertia fine and coarse particles is utilized to
direct and the latter into a scoop.

      The construction of a scoop is shown in the figures.  It an
air-box 1, filter at the periphery of a disk 2 from which an air flow
3 is driven into the entry 4.  A series of collision vanes 5 fixed
along the of the box occupy the full width of the box but do extend
to the bottom of the box, leaving a clearance 6 heavy particles after
collision with a vane to drop and blown into a retaining cavity 7.
Holes 8 in the vanes an unrestricted airflow 9 to recycle through the
disk increasing the efficiency of the filter.

     ...