EP 2378131 B1 20161026 - IMPELLER OF BLOWER
Title (en)
IMPELLER OF BLOWER
Title (de)
FLÜGELRAD FÜR GEBLÄSE
Title (fr)
ROUE DE VENTILATEUR
Publication
Application
Priority
- CN 2009001376 W 20091204
- CN 200810207469 A 20081219
Abstract (en)
[origin: EP2378131A1] An impeller (1) of blower comprises several vanes (2) mounted between an upper edge board (4) and a lower edge board (5) of the impeller. The vane (2) has at least one concave pressing rib (21) along its transverse. The concave pressing rib (21) has a through hole (22) at its end which is near the end of the vane (2). When the impeller (1) of blower operates, part of air at the front surface of the vane (2) flows through the through hole (22) at the end of the concave pressing rib (21) to the rear surface of the vane (2) along the direction of the concave pressing rib (21). The pressure at the front surface and the rear surface of the vane (2) can be balanced to reduce the resistance of the air and to increase the amount of ventilation. Therefore the efficiency is increased.
IPC 8 full level
F04D 29/30 (2006.01); F04D 29/28 (2006.01); F04D 29/68 (2006.01)
CPC (source: EP)
F04D 29/281 (2013.01); F04D 29/30 (2013.01); F04D 29/681 (2013.01)
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
EP 2378131 A1 20111019; EP 2378131 A4 20141105; EP 2378131 B1 20161026; CN 101749272 A 20100623; CN 101749272 B 20110928; WO 2010069126 A1 20100624
DOCDB simple family (application)
EP 09832808 A 20091204; CN 200810207469 A 20081219; CN 2009001376 W 20091204