PROPELLER FAN AND AIR CONDITIONER

Registre Brevet WIPO
Numéro d'application JP2021019737
Numéro de publication 2022/249270
Statut Délivré - en vigueur
Date de dépôt 2021-05-25
Date de publication 2022-12-01
Propriétaire HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japon)
Inventeur(s)
  • Iwase Taku
  • Kishitani Tetsushi
  • Obara Hideshi

Abrégé

Provided is a propeller fan that can be made thinner, produces little noise, and is highly efficient. A propeller fan U1 comprises: a propeller (3) having a boss section (33) and a plurality of blades (32); and a bell mouth (8) provided on the outer circumferential side of the propeller (3). A first position (α), located closest to the suction side at the front edge portion (32a) of each blade (32), is provided in between a blade tip front edge (321) and a blade root front edge (323), such that in between the blade tip front edge (321) and the first position (α), the front edge portion (32a) forms a concave shape curving toward a blowout side, while a rear edge portion (32b) of the blade (32) forms a convex shape curving toward the blowout side.

Classes IPC  ?