Title:
遠心送風機及びこれを備えた空気調和機
Document Type and Number:
Japanese Patent JP5783214
Kind Code:
B2
Abstract:
In a centrifugal fan (51), when an angle defined by a tangential line (L1) to a camber line (CL) at an intersection point (P) between the camber line (CL) and an arc around a rotation axis (A), and a tangential line (L2) to the arc at the intersection point (P) on a blade cross section passing a front edge (61) and a rear edge (62) of a blade (21) is a blade angle (²), the blade (21) has at least one of a decreasing shape and a fixed shape. The decreasing shape is such that the blade angle (²) decreases as the intersection point (P) is shifted toward the rear edge (62) on the camber line (CL) on a front edge (61)-side portion (PL) of a shroud (19)-side blade cross section (S1). The fixed shape is such that the blade angle (²) is fixed, even if the intersection point (P) is shifted toward the rear edge (62) on the camber line (CL) on the front edge (61)-side portion (PL) of the shroud (19)-side blade cross section (S1).
More Like This:
| JPS52124206 | COMPRESSOR WHEELS AND BLANKS THEREFOR |
| JPH08135595 | POSITIVE SILENT BLOWER |
Inventors:
Otaguro Ryusuke
Application Number:
JP2013205128A
Publication Date:
September 24, 2015
Filing Date:
September 30, 2013
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
F04D29/30; F04D29/66; F24F1/0047
Domestic Patent References:
| JP2011252424A | ||||
| JP2007321643A | ||||
| JP2007198268A | ||||
| JP5312189A | ||||
| JP5312190A | ||||
| JP2011226398A | ||||
| JP6153497A | ||||
| JP2005155579A |
Foreign References:
| US5996685 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Tamagushi Yukihisa
Masataka Otani
Tamagushi Yukihisa