Fan assembly with heat sink
OwnerEdward Herbertinventor
Life of this patent
Estimating the term…
Abstract
Heat transfer from the inside of a fan duct to the air is very good because the air in this region has a high velocity and is turbulent due to the rotation of the fan blades. Devices mounted on the outside of the fan duct can thus be cooled effectively. The inside surface of the duct can be modified to enhance the heat transfer as by grooving it deeply. The fan blade also can be modified to increase the air velocity and the turbulence. External fins can be added to the fan duct, and it can be shrouded so that a portion of the exit air passes through the fins back to the inlet. This decreases the mass of the exit air, for quieter operation.
Claims13
A fan assembly with heat sink comprising:
- a fan having a plurality of fan blades, means for rotating the fan so that air is moved within the fan assembly with heat sink,
- a fan duct having a wall with an inside and an outside surface surrounding the fan, the fan rotating within the fan duct with the plurality of fan blades of the fan proximate to the inside surface of the fan duct, at least one heat sink mounting surface integral to the fan duct for mounting a device to be cooled or heated, whereby
- the heat further being conducted from the fan duct to air which is moved within the fan assembly with heat sink, and whereby
- the conduction of heat is enhanced by the high velocity and turbulence of the air in the vicinity of the plurality of fan blades of the fan.
A fan assembly with heat sink comprising:
- a fan comprising a plurality of paddle bars, means for rotating the fan so that air is moved within the fan assembly with heat sink,
- a fan duct having a wall with an inside and an outside surface surrounding the fan,
- the plurality of paddle bars being generally transverse to the rotation of the fan and further being proximate to and generally parallel with the inside surface of the fan duct,
- means for rotating the fan so that the paddle bars are rotated proximate to and generally parallel with the inside surface of the fan duct,
- at least one heat sink mounting surface integral to the fan duct for mounting a device to be cooled or heated,
- the heat further being conducted from the fan duct to air which is moved within the fan assembly with heat sink, and whereby
- the conduction of heat is enhanced by the high velocity and turbulence of the air in the vicinity of the plurality of paddle bars of the fan.
Dependencies are inferred from the claim text.