EP 3821132 A1 20210519 - DIAGONAL FAN HAVING AN OPTIMISED DIAGONAL IMPELLER
Title (en)
DIAGONAL FAN HAVING AN OPTIMISED DIAGONAL IMPELLER
Title (de)
DIAGONALVENTILATOR MIT OPTIMIERTEM DIAGONALLAUFRAD
Title (fr)
VENTILATEUR DIAGONAL ÉQUIPÉ D'UN ROTOR DIAGONAL OPTIMISÉ
Publication
Application
Priority
- DE 102018128821 A 20181116
- EP 2019080093 W 20191104
Abstract (en)
[origin: CN209781249U] The utility model relates to a diagonal fan. The centrifugal fan comprises a motor (10) and a diagonal impeller (12) which can be driven by the motor (10) around a rotating shaft (RA), wherein the diagonal impeller (12) defines an air inlet (30) and an air outlet (31) and has a hub (35) and circumferentially distributed impeller blades (121) extending radially outward from the hub, the impeller blades are surrounded by a centrifugal ring (122) on the radial outer side. Wherein a flow angle alpha D formed by the centrifugal ring (122) with respect to the axis of rotation (RA) increases from theair inlet (30) to the air outlet (31) and a flow angle alpha N formed by the hub (35) with respect to the axis of rotation (RA) decreases from the air inlet (30) to the air outlet (31). Compared withan axial flow fan with the same structural size, the diagonal fan provided by the utility model has higher pressure under the condition that the efficiency is improved.
IPC 8 full level
F04D 17/06 (2006.01); F04D 29/18 (2006.01); F04D 29/32 (2006.01)
CPC (source: EP US)
F04D 17/06 (2013.01 - EP); F04D 19/002 (2013.01 - US); F04D 25/06 (2013.01 - US); F04D 29/326 (2013.01 - EP); F04D 29/329 (2013.01 - EP US); F04D 29/386 (2013.01 - US); F04D 29/541 (2013.01 - US); F04D 29/183 (2013.01 - EP)
Citation (search report)
See references of WO 2020099167A1
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)
DE 102018128821 A1 20200520; CN 112840128 A 20210525; CN 112840128 B 20240109; CN 209781249 U 20191213; EP 3821132 A1 20210519; US 11542955 B2 20230103; US 2022049715 A1 20220217; WO 2020099167 A1 20200522
DOCDB simple family (application)
DE 102018128821 A 20181116; CN 201920172751 U 20190131; CN 201980067351 A 20191104; EP 19798270 A 20191104; EP 2019080093 W 20191104; US 201917274767 A 20191104