Daikin Industries, Ltd.

Tatsuo Fujiwara

Masaki Yamamoto

Masashi Kamada

Manabu Kato

Hiroki Ishihara

Tadashi Ohnishi

A frame ( ) is provided around the perimeter of the air outlet ( ) of the fan ( ). The frame ( ) includes a plurality of board-shaped ribs ( ) extending radially outward from the vicinity of the center of the frame ( ) in the direction of the radius of the fan ( ). The frame ( ) also includes a plurality of cylindrical ribs ( ) integrated with the plurality of board-shaped ribs ( ), and arranged concentrically around the rotation axis (O-O&prime;) of the fan ( ) at predetermined intervals in the direction of the radius of the fan ( ). The board-shaped ribs ( ) are curved outward in the direction of rotation of the fan ( ) and inclined in the direction of air flowing from the fan ( ).

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Osaka, Japan

Tatsuo Fujiwara