EP 1906028 A4 20110601 - AXIAL FLOW FAN
Title (en)
AXIAL FLOW FAN
Title (de)
AXIALLÜFTER
Title (fr)
VENTILATEUR AXIAL
Publication
Application
Priority
- JP 2006314259 W 20060719
- JP 2005211542 A 20050721
Abstract (en)
[origin: EP1906028A1] In an axial flow fan provided with a plurality of impeller blades (13) provided in a hub (14), and a plurality of bent portions (13c) each formed by bending an outer peripheral edge of each of the impeller blades (13) toward a negative pressure surface (13e) of each of the impeller blades (13), a protruding portion (13f) is provided in a portion in which a blowing wind speed is high and a pressure rising work is most effectively carried out, in a rear edge portion (13b) of each of the impeller blades (13). Each of the protruding portions (13f) protrudes to an inverse direction to a rotating direction of each of the impeller blades (13) with respect to a straight line L connecting a proximal end and an outer peripheral end in the rear edge portion (13b) of each of the impeller blades (13). In this case, if a vane area of each of the impeller blades (13) is enlarged by setting a protruding portion (13f) at a predetermined position in the rear edge portion (13b) of each of the impeller blades (13), it is possible to effectively compensate for shortage of an amount of rise in static pressure which is lowered by bending the outer peripheral edge of each of the impellers (13).
IPC 8 full level
F04D 29/38 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP KR US)
F04D 29/384 (2013.01 - EP KR US); F04D 29/388 (2013.01 - KR); F04D 29/666 (2013.01 - EP KR US); F04D 29/667 (2013.01 - KR); F05D 2210/12 (2013.01 - KR); F05D 2240/307 (2013.01 - EP US); Y10S 415/00 (2013.01 - KR); Y10S 416/00 (2013.01 - KR); Y10S 417/00 (2013.01 - KR)
Citation (search report)
- [X] US 2004136830 A1 20040715 - EGUCHI AKIHIRO [JP], et al
- [X] US 1855660 A 19320426 - ALLEN WILLIAM W
- [X] DE 202004005548 U1 20040617 - EBM PAPST ST GEORGEN GMBH & CO [DE]
- [XI] DE 4124891 A1 19920206 - USUI KOKUSAI SANGYO KK [JP]
- [X] US 2003156945 A1 20030821 - SUZUKI TETSUNOBU [JP]
- [X] EP 0980979 A1 20000223 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- See references of WO 2007010936A1
Citation (examination)
US 2003012656 A1 20030116 - CHO KYUNG SEOK [KR], et al
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 1906028 A1 20080402; EP 1906028 A4 20110601; AU 2006270875 A1 20070125; AU 2006270875 B2 20100401; CN 101203680 A 20080618; CN 101203680 B 20101103; JP 2007024004 A 20070201; JP 5259919 B2 20130807; KR 20080009762 A 20080129; US 2008253897 A1 20081016; WO 2007010936 A1 20070125
DOCDB simple family (application)
EP 06768285 A 20060719; AU 2006270875 A 20060719; CN 200680022040 A 20060719; JP 2005211542 A 20050721; JP 2006314259 W 20060719; KR 20077029958 A 20071221; US 92259906 A 20060719