EP 3217018 A1 20170913 - PROPELLER FAN, PROPELLER FAN DEVICE, AND OUTDOOR EQUIPMENT FOR AIR-CONDITIONING DEVICE
Title (en)
PROPELLER FAN, PROPELLER FAN DEVICE, AND OUTDOOR EQUIPMENT FOR AIR-CONDITIONING DEVICE
Title (de)
PROPELLERLÜFTER, PROPELLERLÜFTERVORRICHTUNG UND AUSSENEINHEIT FÜR KLIMAANLAGE
Title (fr)
VENTILATEUR HÉLICOÏDE, DISPOSITIF DE VENTILATEUR HÉLICOÏDE, ET UNITÉ EXTÉRIEURE POUR DISPOSITIF DE CONDITIONNEMENT D'AIR
Publication
Application
Priority
JP 2014079190 W 20141104
Abstract (en)
A propeller fan (1) includes a boss (1a) and a blade (2) fixed to the boss (1a). The blade (2) has at least one of a shape in which a part of a leading edge (21) of the blade (2) protrudes toward a positive pressure surface (2a) side or a shape in which a part of a trailing edge (22) of the blade (2) protrudes toward a negative pressure surface (2b) side. A center (28) of the protrusion in a radial direction of the blade is located on a radially outer side with respect to a radial position at a half of a blade radius (Rt) from a rotation center line (RC). Thus, more equalized blowing airflow velocity distribution in the radial direction of the blade (2) can be achieved, thereby being capable of reducing noise.
IPC 8 full level
F04D 29/38 (2006.01)
CPC (source: EP)
F04D 29/384 (2013.01); F04D 29/667 (2013.01); F05D 2240/303 (2013.01); F05D 2240/304 (2013.01)
Designated contracting state (EPC)
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 state (EPC)
BA ME
DOCDB simple family (publication)
EP 3217018 A1 20170913; EP 3217018 A4 20180530; EP 3217018 B1 20200916; JP 6377172 B2 20180822; JP WO2016071948 A1 20170525; WO 2016071948 A1 20160512
DOCDB simple family (application)
EP 14905593 A 20141104; JP 2014079190 W 20141104; JP 2016557365 A 20141104