Title:
PROPELLER FAN AND REFRIGERATING CYCLE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/216164
Kind Code:
A1
Abstract:
A propeller fan comprises: a rotating shaft part that rotates about an axis; and a plurality of blades disposed on the outer periphery of the rotating shaft part. The blades have at least one concave part opened at the trailing edge. The concave part includes a first side which extends from the trailing edge toward the leading edge on the inner peripheral side, and which is curved toward the outer peripheral side.
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Inventors:
YAMAMOTO KATSUYUKI (JP)
NAKASHIMA SEIJI (JP)
NAKASHIMA SEIJI (JP)
Application Number:
PCT/JP2017/019545
Publication Date:
November 29, 2018
Filing Date:
May 25, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D29/38; F04D29/66
Domestic Patent References:
| WO2016117413A1 | 2016-07-28 |
Foreign References:
| JP2003206894A | 2003-07-25 | |||
| JP2016183643A | 2016-10-20 | |||
| JP4467952B2 | 2010-05-26 |
Other References:
See also references of EP 3633208A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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