PROPELLER FAN AND AIR CONDITIONER

PROPELLER FAN AND AIR CONDITIONER

Provided is a low-noise and high-efficiency propeller fan of which the thickness can be reduced. A propeller fan U1 includes a propeller (3) having a boss portion (33) and a plurality of blades (32), and a bell mouth (8) provided on the outer peripheral side of the propeller (3). A first position (a...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: IWASE, Taku, KISHITANI, Tetsushi, OBARA, Hideshi
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT PUMPS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Beschreibung
Zusammenfassung:Provided is a low-noise and high-efficiency propeller fan of which the thickness can be reduced. A propeller fan U1 includes a propeller (3) having a boss portion (33) and a plurality of blades (32), and a bell mouth (8) provided on the outer peripheral side of the propeller (3). A first position (a) closest to a suction side in a leading edge portion (32a) of each blade (32) is provided between a blade leading edge tip (321) and a blade leading edge root (323). A leading edge portion (32a) has, between the blade leading edge tip (321) and the first position (a), a recessed shape curved toward a blowing side. A trailing edge portion (32b) of each blade (32) has a raised shape curved toward the blowing side.