Fan for an electronic device
Particular embodiments described herein provide for an electronic device that includes a fan. The fan can include a center shaft, fan blades that extend from the center shaft, and a plurality of magnets on an outside portion of at least two of the fan blades, where stator coils interact with the magnets to drive the blades around the center shaft. The center shaft and fan blades are a single component from the same material. In some examples, the center shaft and fan blades were created using a metal injection molding process.
1. A fan comprising:
a center shaft;
fan blades that extend from the center shaft, wherein the center shaft and the fan blades are a single component made from a same non-magnetic material; and
a plurality of magnets, wherein a magnet from the plurality of magnets is located on an outside portion of at least two of the fan blades, wherein stator coils interact with the plurality of magnets to drive the fan blades around the center shaft, wherein a fan tip to stator coil distance for the fan blades that do not include anter magnet from the plurality of magnets is four (4) millimeters or more and a magnet to stator coil distance is one (1) millimeter or less such that an end of each of the plurality of magnets extends past a tip of the fan blades that do not include ara magnet by at least three (3) millimeters or more.
2. The fan of claim 1 , wherein the center shaft and the fan blades were created using a metal injection molding process.
3. The fan of claim 1 , wherein the fan tip to stator coil distance for the fan blades that do not include any magnet from the plurality of magnets is between four (4) millimeters to six (6) millimeters.
4. The fan of claim 1 , wherein the fan blades have a fan blade height of between three (3) millimeters to five (5) millimeters.
5. The fan of claim 1 , wherein the magnet from the plurality of magnets located on the outside portion of the at least two of the fan blades is secured to the outside portion of each of the at least two fan blades using a magnet housing.
6. The fan of claim 1 , wherein the stator coils are located on a printed circuit board.
7. The fan of claim 1 , wherein the fan is located in a laptop computer.
8. An electronic device comprising:
memory;
a heat source;
a plurality of stator coils; and
a fan, wherein the fan includes:
a center shaft;
fan blades that extend from the center shaft, wherein the center shaft and the fan blades are a single component from a same non-magnetic material; and
a plurality of magnets, wherein a magnet from the plurality of magnets is located on an outside portion of at least two of the fan blades, wherein the stator coils interact with the plurality of magnets to drive the fan blades around the center shaft, wherein a fan tip to stator coil distance for the fan blades that do not include anter magnet from the plurality of magnets is four (4) millimeters or more and a magnet to stator coil distance is one (1) millimeter or less such that an end of each of the plurality of magnets extends past a tip of the fan blades that do not include anter magnet by at least three (3) millimeters or more.
9. The electronic device of claim 8 , wherein the center shaft and the fan blades were created using a metal injection molding process.
10. The electronic device of claim 8 , wherein the fan tip to stator coil distance for the fan blades that do not include anter magnet from the plurality of magnets is between four (4) millimeters to six (6) millimeters.
11. The electronic device of claim 8 , wherein the fan blades have a fan blade height of between three (3) millimeters to five (5) millimeters.
12. The electronic device of claim 8 , wherein a gap between the center shaft and a cover of the electronic device is one (1) millimeter or less.
13. The electronic device of claim 8 , wherein the magnet from the plurality of magnets located on the outside portion of the at least two of the fan blades is secured to the outside portion of each of the at least two fan blades using a magnet housing.
14. The electronic device of claim 8 , wherein the stator coils are located on a printed circuit board.
15. A method comprising:
rotating a fan to cool an electronic device, wherein the fan includes:
a center shaft;
fan blades that extend from the center shaft, wherein the center shaft and the fan blades are a single component; and
a plurality of magnets, wherein a magnet from the plurality of magnets is located on an outside portion of at least two of the fan blades, wherein stator coils interact with the plurality of magnets to drive the fan blades around the center shaft, wherein a fan tip to stator coil distance for the fan blades that do not include anter magnet from the plurality of magnets is four (4) millimeters or more and a magnet to stator coil distance is one (1) millimeter or less such that an end of each of the plurality of magnets extends past a tip of the fan blades that do not include any magnet by at least three (3) millimeters or more.
16. The method of claim 15 , wherein the center shaft and the fan blades were created using a metal injection molding process.
17. The method of claim 15 , wherein the fan tip to stator coil distance for the fan blades that do not include any magnet from the plurality of magnets is between four (4) millimeters to six (6) millimeters.
18. The method of claim 15 , wherein the magnet from the plurality of magnets located on the outside portion of the at least two of the fan blades is secured to the outside portion of each of the at least two fan blades.
19. The method of claim 15 , wherein the fan blades have a fan blade height of between three (3) millimeters to five (5) millimeters.
20. The method of claim 15 , wherein a gap between the center shaft and a cover of the electronic device is one (1) millimeter or less.