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US 6,637,501 B2Granted
Heat dissipation device
AssigneeDelta Electronics, Inc.
InventorsTsu-Liang Lin, Bor Haw Chang, Yu-Hung Huang, Wen-Shi Huang
Life of this patent
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Abstract
The present heat dissipation device is provided with a fan frame and a blade structure. The fan frame includes an air inlet, an air outlet, and a curved portion. The air inlet has a non-circular indentation in the vicinity of the curved portion corresponding to the airflow passage. This indentation effectively increases the airflow amount and static pressure of the airflow expelled from the heat dissipation device.
Claims4
A heat dissipation device, comprising:
- a fan frame having a curved portion, an air inlet, and an air outlet corresponding to the air inlet, wherein a part of the air inlet adjacent to the curved portion has a non-arc configuration and an indentation extended toward the air outlet;
- and
- a blade structure disposed in the fan frame.
Dependencies are inferred from the claim text.