| 摘要 |
A fan frame ( 10 ) for encircling an impeller ( 20 ) of a fan unit is disclosed. The fan frame includes a base ( 11 ) and a plurality of sidewalls ( 12 ) extending from the base. The base defines a hole ( 13 ) in a center so that an airflow passage is formed between the impeller and the sidewalls. The sidewalls extend upwardly from side edges of the base for encircling the impeller. Each of the sidewalls is bent inwardly to form a bent portion ( 121 ) with a groove ( 14 ) formed between the bent portion and an adjacent sidewall for providing extra access to airflow through the passage.
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