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US 4,396,964 AGranted
Recirculating air system for magnetic disk drive
AssigneeStorage Technology Corporation
InventorsJames H. Morehouse, Mark A. Swenson
Life of this patent
Estimating the term…
Abstract
In a magnetic disk drive unit, air is pumped by the magnetic disks through a closed recirculating air path extending over and under the base plate. The air is pumped through a heat exchanger and an air filter to maintain uniform temperature and cleanliness of the recirculating air. A blower driven from the motor which drives the hub pumps air through the ambient side of the heat exchanger to effect a heat transfer from the enclosure.
Claims8
A magnetic disk drive comprising:
- a hollow rotating hub having air vents;
- a base plate for mounting said hub for rotation thereon;
- a frame on which said base plate is mounted;
- an enclosure, said frame and enclosure defining a closed air path over and under said base plate, to the inside of said hub and through the vents therein;
- a heat exchanger in said air path;
- a centrifugal blower for circulating cooling air through said heat exchanger;
- and
- a drive motor for driving both said blower and said hub.
5 more elements
A magnetic disk drive comprising:
- a hollow rotating hub having air vents;
- a base plate for mounting said hub for rotation thereon;
- a frame on which said base plate is mounted;
- an enclosure, said frame and enclosure defining a closed air path over and under said base plate, to the inside of said hub and through the vents therein;
- a magnetic recording head assembly positioned in said closed air path;
- a source of pressurized ambient air;
- and
- an ambient filter, said pressurized ambient air being connected to said closed air path through said ambient filter so that leakage from said closed air path is replaced by clean ambient air.
5 more elements
Dependencies are inferred from the claim text.