Title:
CENTRIFUGAL FAN, AIR CONDITIONER, AND REFRIGERATING CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/085889
Kind Code:
A1
Abstract:
A centrifugal fan that operates with little noise at high efficiency is provided. The centrifugal fan is provided with a main panel, a side panel, and a plurality of blades. The side panel, which is provided so as to face the main panel, has the shape of a ring. The plurality of blades are provided between the main panel and the side panel. In the inner peripheral side of the plurality of blades, the plurality of blades have a blade inlet angle of θ1-θ3. Each of the plurality of blades has a first section, a second section, and a third section. The first section is connected to the main panel. The third section is connected to the side panel. The second section is positioned between the first section and the third section. The blade inlet angle θ1 in the first section of at least one of the plurality of blades is greater than the blade inlet angle θ2 in the second section of said at least one blade. The blade inlet angle θ3 in the third section of said at least one blade is less than the blade inlet angle θ2 in the second section of said at least one blade.
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Inventors:
KONO ATSUSHI (JP)
IKEDA TAKASHI (JP)
IKEDA TAKASHI (JP)
Application Number:
PCT/JP2015/082791
Publication Date:
May 26, 2017
Filing Date:
November 20, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D29/28; F04D29/30; F24F1/00
Domestic Patent References:
| WO2015045907A1 | 2015-04-02 |
Foreign References:
| JP2007170331A | 2007-07-05 | |||
| JP2010174671A | 2010-08-12 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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