Multiblade fan and electronic apparatus having a multiblade fan

Details Multiblade fan and electronic apparatus having a multiblade fan Multiblade fan and electronic apparatus having a multiblade fan

2007-03-27

2007-03-27

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

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

C416S182000

Reexamination Certificate

active

10915099

ABSTRACT:
A multiblade fan includes a case having an air intake port and an air exhaust port, an impeller disposed in said case and having a plurality of blades rotatable about the center of said air intake port, and a noise silencer fin extending substantially parallel to the opening plane of said air intake port, the noise silencer fin being disposed near the tongue of said case. The noise silencer fin suppresses excessive pressure variations and flow speed fluctuations in the vicinity of the air intake port, thereby suppressing the generation of noise.

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