以及多个导流片，设置于该基座与该外框之间，其中该导流片具有一第一曲面和一第二曲面，以大幅降低扰流噪音并可提高风压。

Several flow guiders are fixed in between the frame base and the frame. The flow guiders have the first and the second curve surfaces to largely decrease noise and increase wind pressure.

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本实用新型公开了一种辅助焊接装置，其包括基座、轴座、转动件及定位片。

The utility model discloses au auxiliary welding device which comprises a base, a shaft seat, a rotating part and a positioning piece.

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本发明揭示一种风扇(10)，其具有一基座(11)及一保护性外壳(12)，所述保护性外壳(12)包围一电动机(13)及一叶片组合件(14)。

A fan (10) is disclosed having a base (11) and a protective housing (12) encasing an electric motor (13) and a blade assembly (14).

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