Title:
BLOWER
Document Type and Number:
Japanese Patent JP2015194147
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a blower in which air blowing performance and noise performance do not deteriorate even when a turbulent airflow flows into an impeller, while including stability of molding.SOLUTION: A blower is provided which includes: an arc-shaped part 18 which is swollen to a rotational axis direction upstream side of a blade 1 from a blade front edge 8 to a blade rear edge 17 of the blade 1; and a blade front part 19 provided along the blade front edge 8. The blade front part 19 includes: a downstream side exfoliation suppression part 68 configured by a protrusion part 22 protruding with a first arc 21 whose curvature is larger than the arc-shaped part 18 and a dent part 24 formed adjacent to the blade rear edge 17 side of the protrusion part 22, on a downstream surface 20 of the blade 1 from the blade front edge 8; and an upstream side exfoliation suppression part 69 configured by an end part 27 forming a second arc 26 whose curvature is larger than the arc-shaped part 18 and a groove part 28 formed on the blade rear edge 17 side of the end part 27, on an upstream surface 25 of the blade 1 from the blade front edge 8.
Inventors:
KONDO HIROYUKI
NAKAMURA RYUICHI
MARUYAMA HIROSHI
NAKAMURA RYUICHI
MARUYAMA HIROSHI
Application Number:
JP2014171742A
Publication Date:
November 05, 2015
Filing Date:
August 26, 2014
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
F04D29/38; F04D25/12; F04D29/66; F04D29/70
Domestic Patent References:
| JP2012047098A | 2012-03-08 | |||
| JPH0222700U | 1990-02-15 | |||
| JP2002250298A | 2002-09-06 | |||
| JP2002357197A | 2002-12-13 | |||
| JPH01300099A | 1989-12-04 | |||
| JP2012241684A | 2012-12-10 | |||
| JPH1144432A | 1999-02-16 | |||
| JPH1047299A | 1998-02-17 |
Foreign References:
| US20050163621A1 | 2005-07-28 | |||
| WO2013104513A1 | 2013-07-18 |
Attorney, Agent or Firm:
Kentaro Fujii
Kenji Kamada
Hiroo Maeda
Kenji Kamada
Hiroo Maeda