EP 1933039 A1 20080618 - CENTRIFUGAL FAN AND AIR CONDITIONER USING THE SAME
Title (en)
CENTRIFUGAL FAN AND AIR CONDITIONER USING THE SAME
Title (de)
ZENTRIFUGALLÜFTER UND DIESEN EINSETZENDE KLIMAANLAGE
Title (fr)
VENTILATEUR CENTRIFUGE ET CLIMATISEUR ASSOCIÉ
Publication
Application
Priority
- JP 2006318932 W 20060925
- JP 2005289208 A 20050930
Abstract (en)
The present invention provides a centrifugal fan by which air velocity distribution in the height direction of impellers at a fan blow-out port is made uniform and running noise is reduced, and an air conditioner whose running noise is reduced by applying the centrifugal fan thereto. The centrifugal fan is provided with a hub for fixing the rotary shaft of a motor, a main plate formed on the outer circumference of the hub, a shroud disposed to be opposed to the main plate, which forms an air passage, a plurality of impellers disposed between the main plate and the shroud, and a bellmouth disposed at the suction side of the shroud. Projections or recesses are formed on the surface of the shroud facing the bellmouth, which projections or recesses form air streams flowing from the center of the shroud toward the outer circumference thereof along the surface when running a fan. The air conditioner has a thus constructed centrifugal fan mounted therein.
IPC 8 full level
F04D 29/28 (2006.01); F24F 1/0022 (2019.01); F04D 29/16 (2006.01); F04D 29/66 (2006.01); F24F 1/0063 (2019.01)
CPC (source: EP KR US)
F04D 29/162 (2013.01 - EP US); F04D 29/28 (2013.01 - KR); F04D 29/281 (2013.01 - EP US); F04D 29/4213 (2013.01 - EP US); F04D 29/44 (2013.01 - KR); F04D 29/667 (2013.01 - EP US); F24F 1/00 (2013.01 - KR); F24F 1/0022 (2013.01 - EP US); F24F 1/0047 (2019.01 - EP US); F24F 1/0057 (2019.01 - EP US); F24F 1/0063 (2019.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1933039 A1 20080618; EP 1933039 A4 20140507; AU 2006298249 A1 20070412; AU 2006298249 B2 20100218; CN 100559032 C 20091111; CN 101253333 A 20080827; JP 2007100548 A 20070419; JP 4017003 B2 20071205; KR 100934556 B1 20091229; KR 20080037722 A 20080430; US 2009255654 A1 20091015; WO 2007040073 A1 20070412
DOCDB simple family (application)
EP 06810500 A 20060925; AU 2006298249 A 20060925; CN 200680031911 A 20060925; JP 2005289208 A 20050930; JP 2006318932 W 20060925; KR 20087006553 A 20060925; US 99264506 A 20060925