Blower

Details Blower Blower

2005-03-15

2005-03-15

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

C415S206000, C415S212100

Reexamination Certificate

active

06866473

ABSTRACT:
This invention is designed to reduce a harsh noise, by suppressing a wind noise generated at a wind-receiving end, which is caused by forming the wind-receiving end of an outlet port for air so as to be parallel to a side extending along the direction of the rotation axis of a vane of an impeller. The wind-receiving end of the outlet port is provided in the form of steps or with inclination with respect to a side extending along the direction of the rotation axis of a vane of the impeller so that the wind sent and blown out by the vanes of the impeller is prevented from blowing against the wind-receiving end all at once throughout its entire width.

REFERENCES:
patent: 2151631 (1939-04-01), Anderson
patent: 3093299 (1963-06-01), Hammann et al.
patent: 5536140 (1996-07-01), Wagner et al.
patent: 6039532 (2000-03-01), McConnell
patent: 6200093 (2001-03-01), Lee et al.
patent: 6254336 (2001-07-01), Ahn
patent: 40110039 (1989-04-01), None

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