Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1987-04-20
1988-10-25
Hecker, Stuart N.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
G11B 5012
Patent
active
047807768
ABSTRACT:
An improved air flow system in a sealed data recording disk file directs selected portions of the air flow from the periphery of the stack of rotating disks to specific heat generating components in the disk file. A converging duct is attached to the disk file housing and has its inlet located in close proximity to the periphery of the rotating disks. The outlet of the converging duct is located adjacent to the voice coil motor (VCM) actuator and oriented such that the flow exiting the outlet is perpendicular to the linear path of the VCM. The outlet of the duct has an area smaller than that of the inlet so that there is an increase in velocity of the exiting air, which increases the cooling rate of the VCM. The converging duct includes a shield which is located adjacent the duct inlet and curved to coincide generally with the periphery of the disks in the disk stack. The shield directs a second portion of the air flow from the periphery of the disks across the electronic read/write modules located on the arms which support the read/write heads. The air flowing across the electronic modules is prevented from flowing perpendicular to the linear path of the VCM and is combined with the flow which has passed across the VCM. The air which has combined after passing across the VCM and the electronic modules is then passed through a filter where any particulate matter is removed. After exiting the filter, the air is directed through a channel and up through the disk stack hub for recirculation by the rotating disks. The portion of air from the rotating disks which is not directed into the inlet of the converging duct or through the opening in the shield attached to the converging duct spirals down the interior walls of the disk file housing and is recombined with the air from the channel for passage up through the disk stack hub.
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Berthold Thomas R.
Hecker Stuart N.
International Business Machines - Corporation
Severin David J.
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