(19)
(11) EP 3 798 451 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
19.05.2021 Bulletin 2021/20

(43) Date of publication:
31.03.2021 Bulletin 2021/13

(21) Application number: 19810828.4

(22) Date of filing: 24.05.2019
(51) International Patent Classification (IPC): 
F04D 29/38(2006.01)
F24F 1/38(2011.01)
 F24F 1/0029(2019.01)
(86) International application number:
PCT/JP2019/020593
(87) International publication number:
WO 2019/230582 (05.12.2019 Gazette 2019/49)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 30.05.2018 JP 2018103741

(71) Applicant: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
108-8215 Tokyo (JP)

(72) Inventors:
  • EGUCHI, Tsuyoshi
    Tokyo 100-8332 (JP)
  • HARA, Yosihiro
    Tokyo 100-8332 (JP)
  • TANAKA, Kazunari
    Tokyo 100-8332 (JP)

(74) Representative: Cabinet Beau de Loménie 
158, rue de l'Université
75340 Paris Cedex 07
75340 Paris Cedex 07 (FR)

   


(54) PROPELLER FAN AND AIR CONDITIONER OUTDOOR UNIT PROVIDED WITH PROPELLER FAN


(57) Provided is a propeller fan capable of improving performance. The propeller fan includes: a shaft portion that rotates about a center axial line; and a plurality of blades that have roots connected to an outer periphery of the shaft portion and extend in a radial direction, trailing edge side surface area increased regions (S2) and leading edge side surface area increased regions (S1) are included such that dimensions in an axial line direction parallel to the center axial line are larger on a side of tips than on a side of the roots in a case in which projection to a meridional plane including a blade center axial line is performed, and the trailing edge side surface area increased regions (S2) are larger than the leading edge side surface area increased regions (S1). A blade stagger angle with respect to a direction of the center axial line locally increases such that an amount of change from distribution that substantially linearly increases from the side of the roots toward the side of tips of the blades has a maximum value at a center position of a blade height with reference to the distribution.