Coaxial air ducts and fans for cooling and electronic component
AssigneeInternational Business Machines Corporation
InventorsJimmy Grant Foster, Sr., Michael Sean June, Albert Vincent Makley, Jason Aaron Matteson
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Abstract
A structure for cooling an electronic component includes a heat sink attached to the component, an inner air duct extending into a central portion of the heat sink, and an outer air duct extending into an outer portion of the heat sink. In inner fan, within the inner air duct, moves air in one direction, while an outer fan, in the outer air duct, moves air in the other direction. The fans may be built as separate rotors, or as separate portions of a single rotor.
Claims20
Apparatus for cooling a component, wherein the apparatus comprises:
- a heat sink extending from a surface of the component, wherein the heat sink includes a central portion and an outer portion;
- an outer air duct including a first portion disposed within the outer portion of the heat sink and a second portion extending away from the outer portion of the heat sink;
- an inner air duct extending away from an opening to the outer air duct adjacent to the central portion of the heat sink, wherein the outer air duct extends along the inner air duct within an annular space around the inner air duct;
- an outer fan within the outer air duct, moving air in a first direction through the outer air duct;
- and an inner fan within the inner air duct, moving air opposite the first direction through the inner air duct.
A fan rotor, rotatably mounted within an outer air duct at a motor disposed at a center of the rotor, wherein the rotor comprises:
- a cylindrical wall;
- a plurality of elongated members extending from the cylindrical wall to the motor through a space forming an inner air duct, and
- a plurality of blades extending outward from the cylindrical wall to move air through the outer air duct with rotation of the rotor.
A fan rotor, rotatably mounted within an outer air duct at a motor disposed at a center of the rotor, wherein the rotor comprises:
- a cylindrical wall;
- a plurality of blades extending outward from the cylindrical wall to move air through the outer air duct in a first direction with rotation of the rotor in a direction of rotation;
- and
- a plurality of blades extending between the cylindrical wall and the motor to move air through an inner air duct within the outer air duct in a direction opposite the first direction with rotation of the rotor in the direction of rotation.
Dependencies are inferred from the claim text.