Integrated upstream spoiler and particle filter in a hard-disk drive (HDD)
View Patent ↗Approaches for integrating an upstream spoiler with a particle filter in a hard-disk drive (HDD). According to an approach, a single part may comprise an upstream spoiler and an opening. The single part has a structure which enables an airborne particle filter to be positioned over or within the opening. The airborne particle filter, which covers the opening, has a curvature that follows the curvature of a shroud. When the upstream spoiler diverts a flow of air, which circulates within the enclosure when the magnetic-recording disk is rotating, from the magnetic-recording head, the upstream spoiler creates an area of relatively greater pressure. Air in the area of greater pressure flows through the airborne particle filter to an area of relatively lesser pressure, thereby removing airborne particles within the enclosure of the HDD. Alternately, the airborne particle filter may be positioned within slits present in the shroud and the upstream spoiler.
1. A hard-disk drive (HDD), comprising:
an enclosure;
a magnetic-recording head;
a magnetic-recording disk rotatably mounted on a spindle;
a drive motor having a motor shaft attached to said spindle for rotating said magnetic-recording disk;
a voice-coil motor configured to move said magnetic-recording head to access portions of said magnetic-recording disk;
a shroud that surrounds a majority of the perimeter of the magnetic-recording disk;
a single part comprising:
an upstream spoiler having one or more wings, wherein the shape of the upstream spoiler diverts a flow of air, which circulates within the enclosure when the magnetic-recording disk is rotating, from the magnetic-recording head, and
an opening, wherein the single part has a structure which enables an airborne particle filter to be positioned over or within the opening; and
the airborne particle filter having a curvature that follows the curvature of the shroud, wherein the airborne particle filter is positioned over the opening of the single part.
2. The hard-disk drive (HDD) of claim 1 , wherein the single part comprises a curved extension that forms a portion of the shroud, wherein the curved extension has a curvature that follows the curvature of the shroud, and wherein neither upstream spoiler nor the airborne particle filter are comprised within the curved extension of the single part.
3. The hard-disk drive (HDD) of claim 1 , wherein the airborne particle filter is flush or substantially flush with the curvature of the shroud.
4. The hard-disk drive (HDD) of claim 1 , wherein the single part is manufactured as a single injection molded plastic part having a filler that dissipates static electricity.
5. The hard-disk drive (HDD) of claim 1 , wherein the shroud does not have a bypass channel.
6. The hard-disk drive (HDD) of claim 1 , wherein the shroud does have a bypass channel, wherein the bypass channel has a bypass filter covering an opening thereof, and wherein the characteristics of the airborne particle filter are designed to optimize airborne particle collection through the airborne particle filter and the bypass filter.
7. The hard-disk drive (HDD) of claim 1 , wherein the single part is manufactured to comprise a slit that allows the airborne particle filter to be positioned within the single part.
8. The hard-disk drive (HDD) of claim 1 , wherein the airborne particle filter is bonded to the single part to cover the opening of the single part.
9. A hard-disk drive (HDD), comprising:
an enclosure;
a magnetic-recording head;
a magnetic-recording disk rotatably mounted on a spindle;
a drive motor having a motor shaft attached to said spindle for rotating said magnetic-recording disk;
a voice-coil motor configured to move said magnetic-recording head to access portions of said magnetic-recording disk;
a shroud that surrounds a majority of the perimeter of the magnetic-recording disk, wherein a portion of the shroud comprises a first slit that is shaped to accommodate a first side of an airborne particle filter;
an upstream spoiler having one or more wings, wherein the shape of the upstream spoiler diverts a flow of air, which circulates within the enclosure when the magnetic-recording disk is rotating, from the magnetic-recording head, wherein a portion of the upstream spoiler comprises a second slit that is shaped to accommodate a second side of the airborne particle filter; and
the airborne particle filter having a curvature that follows the curvature of the shroud, wherein the first side of the airborne particle filter is positioned within the first slit of the shroud, and wherein the second side of the airborne particle filter is positioned within the second slit of the upstream spoiler.
10. The hard-disk drive (HDD) of claim 9 , wherein the airborne particle filter is bonded to the shroud at the first slit and bonded to the upstream spoiler at the second slit using heat sealing, ultrasonic bonding, or an adhesive.
11. The hard-disk drive (HDD) of claim 9 , wherein the airborne particle filter is flush or substantially flush with the curvature of the shroud.
12. The hard-disk drive (HDD) of claim 9 , wherein the shroud does not have a bypass channel.
13. The hard-disk drive (HDD) of claim 9 , wherein the shroud does have a bypass channel, wherein the bypass channel has a bypass filter covering an opening thereof, and wherein the characteristics of the airborne particle filter are designed to optimize airborne particle collection through the airborne particle filter and the bypass filter.
14. The hard-disk drive (HDD) of claim 9 , wherein the airborne particle filter comprises carbon material to aid in the absorption of chemical vapor.
15. An upstream spoiler, comprising:
the upstream spoiler having one or more wings, wherein the shape of the upstream spoiler diverts a flow of air, which circulates within an enclosure of a hard-disk drive (HDD) when a magnetic-recording disk is rotating, from a magnetic-recording head; and
an airborne particle filter having a curvature that follows the curvature of a shroud,
wherein the upstream spoiler creates an area of relatively greater pressure as a result of diverting the flow of air when the magnetic-recording disk is rotating, and wherein a portion of the air in the area of greater pressure flows through the airborne particle filter to an area of relatively lesser pressure.
16. The upstream spoiler of claim 15 , wherein the airborne particle filter comprises a curved extension that forms a portion of the shroud, and wherein the curved extension has a curvature that follows the curvature of the shroud.
17. The upstream spoiler of claim 15 , wherein a single part comprises the upstream spoiler and an opening, wherein the opening has a structure which enables the airborne particle filter to be positioned over the opening, and wherein the single part is manufactured as a single injection molded plastic part having a filler that dissipates static electricity.
18. The upstream spoiler of claim 17 , wherein the single part is manufactured to comprise a slit that allows the airborne particle filter to be positioned within the single part.
19. The upstream spoiler of claim 17 , wherein the airborne particle filter is bonded to the single part to cover the opening of the single part.
20. The upstream spoiler of claim 15 , wherein the airborne particle filter comprises carbon material to aid in the absorption of chemical vapor.