Title:
IMPELLER
Document Type and Number:
Japanese Patent JP2006029126
Kind Code:
A
Abstract:
To meet the need of noise reduction, although generated noise of an impeller has reached the limits in a multiblade fan.
When a centrifugal fan 5 is rotated, a back face of a blade A6 of the centrifugal fan 5 is peeled at the middle thereof, a peeling vortex gets larger toward an outer periphery, and it becomes to the maximum at a blade discharge port, so that turbulence sound gets larger. Since the blade A6 is made of microfiber material, the noise is absorbed therein. Therefore, a centrifugal impeller of the invention absorbs noise caused by the turbulent vortex in the blade A6 and has dust collection effect.
Inventors:
OGINO KAZUO
Application Number:
JP2004205650A
Publication Date:
February 02, 2006
Filing Date:
July 13, 2004
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F04D29/28; F04D23/00; F04D29/02; F04D29/32; F04D29/44; F04D29/54; F04D29/66; F04D29/70
Attorney, Agent or Firm:
Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito
Tomoyasu Sakaguchi
Hiroki Naito