Impeller for blower and air conditioner having the same

Details Impeller for blower and air conditioner having the same Impeller for blower and air conditioner having the same

2005-09-30

2010-10-19

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Perimetric blading extending axially between annular members

C416S187000, C416S23100A, C416S228000

Reexamination Certificate

active

07815419

ABSTRACT:
An impeller is provided for a blower having a blade (15), a plurality of notches (17) provided at predetermined intervals on a side edge of the blade (15), and a plurality of smooth portions (18) each provided between a pair of the notches (17). Since a transverse vortex discharged from the side edge of the blade (15), and on a large scale, is organized by vertical vortexes formed in the notches (17) on a small scale so as to be segmented into stable transverse vortexes, it becomes possible to reduce aerodynamic noise.

REFERENCES:
patent: 4089618 (1978-05-01), Patel
patent: 2003/0175121 (2003-09-01), Shibata et al.
patent: 01167494 (1989-07-01), None
patent: 3-249400 (1991-11-01), None
patent: 9-327156 (1997-12-01), None
patent: 10-252689 (1998-09-01), None
patent: 11-141494 (1999-05-01), None

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