Title:
CENTRIFUGAL FAN
Document Type and Number:
WIPO Patent Application WO/2015/087909
Kind Code:
A1
Abstract:
Provided is a centrifugal fan having a support section, a plurality of blades, and a mounting section, in which a rotation shaft is attached to the mounting shaft and made to rotate in a prescribed direction so that air taken in from the front of the support section is blown out radially. Each of the blades comprises: a primary wing section that has a trailing edge which is parallel to the central axis of rotation and a leading edge end section which is parallel to the central axis of rotation, and the thickness of the primary wing section gradually grows thinner toward the trailing edge and the leading edge end section; and an auxiliary wing section that extends from the leading edge end section of the primary wing section toward the interior of the centrifugal fan. When viewed along the central axis of rotation direction, the auxiliary wing section has a length from the leading edge end section of the primary wing section to the leading edge of the auxiliary wing section that is a greater on the support-section side than on an intake side, and the thickness of the auxiliary wing section is constant across the entire area of the auxiliary wing section.
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Inventors:
KASAHARA MASAMICHI (JP)
ISHIZAKI MASAAKI (JP)
ISHIZAKI MASAAKI (JP)
Application Number:
PCT/JP2014/082670
Publication Date:
June 18, 2015
Filing Date:
December 10, 2014
Export Citation:
Assignee:
KEIHIN CORP (JP)
International Classes:
F04D29/30; F04D29/28
Foreign References:
| JPS5280104U | 1977-06-15 | |||
| JP2003090298A | 2003-03-28 | |||
| JP2010106708A | 2010-05-13 | |||
| JP2006077723A | 2006-03-23 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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