Title:
PROPELLER FAN, BLOWER DEVICE, AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/030868
Kind Code:
A1
Abstract:
A propeller fan according to the present invention is provided with: a shaft part that is provided on a rotating shaft; and a blade that is provided on an outer peripheral side of the shaft part and that has a leading edge and a trailing edge. A plurality of recesses, which include a first recess and a second recess that is located closer to the trailing edge than the first recess is in the circumferential direction centered on the rotating shaft, are formed in a negative pressure surface of the blade. The depth of the first recess is greater than the depth of the second recess.
Inventors:
TERAMOTO TAKUYA (JP)
TADOKORO TAKAHIDE (JP)
YAMAMOTO KATSUYUKI (JP)
ITO HIROYA (JP)
UGAJIN YUKI (JP)
HAMADA SHINGO (JP)
IKEDA TAKASHI (JP)
ABE TAKAFUMI (JP)
TADOKORO TAKAHIDE (JP)
YAMAMOTO KATSUYUKI (JP)
ITO HIROYA (JP)
UGAJIN YUKI (JP)
HAMADA SHINGO (JP)
IKEDA TAKASHI (JP)
ABE TAKAFUMI (JP)
Application Number:
PCT/JP2017/028959
Publication Date:
February 14, 2019
Filing Date:
August 09, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D29/38
Foreign References:
| JPH10246200A | 1998-09-14 | |||
| JP2015194147A | 2015-11-05 | |||
| JPS5583591U | 1980-06-09 | |||
| JPH03294699A | 1991-12-25 |
Other References:
See also references of EP 3667097A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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