IMPELLER OF MULTIBLADE BLOWER AND METHOD OF MANUFACTURING THE SAME

Title:

IMPELLER OF MULTIBLADE BLOWER AND METHOD OF MANUFACTURING THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/037216

Kind Code:

A1

Abstract:

An impeller of a multiblade blower having a plurality of blades with blade tips where a serrated shape is formed so that the dispersion of the position accuracy of the blades is reduced and its rotating strength is increased with less production man-hours. The impeller (7) of the blower (4) comprises resin circular support plates (31, 41) rotating around a rotating shaft and a plurality of resin blades (32, 42). The blades (32, 42) are disposed on the outer peripheral parts of the circular support plates (31, 41) to be parallel with the rotating shaft, and the serrated shape (53) cut out at multiple positions is formed at their blade tips. Then, a step (61) is formed on the blade surface of each of the blades (32, 42) at a position apart a predetermined distance from its blade tip where the serrated shape (53) is formed.

Inventors:

HARAGUCHI KAZUYA (JP)
KAGAWA YOSHINORI (JP)
TANAKA HIDESHI (JP)
YOSHINAGA KOUZOU (JP)

Application Number:

PCT/JP2006/319022

Publication Date:

April 05, 2007

Filing Date:

September 26, 2006

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
HARAGUCHI KAZUYA (JP)
KAGAWA YOSHINORI (JP)
TANAKA HIDESHI (JP)
YOSHINAGA KOUZOU (JP)

International Classes:

F04D17/04; F04D29/30

Foreign References:

JPH11141494A	1999-05-25
JP2000045994A	2000-02-15
JPH03189398A	1991-08-19
JPH10252689A	1998-09-22
JP2002347080A	2002-12-04
JP2004124819A	2004-04-22
JP2006306033A	2006-11-09

Other References: