EP 3833877 A1 20210616 - FAN
Title (en)
FAN
Title (de)
VENTILATOR
Title (fr)
VENTILATEUR
Publication
Application
Priority
- DE 102019205041 A 20190409
- DE 2020200015 W 20200309
Abstract (en)
[origin: WO2020207542A1] The invention relates to a fan, particularly an axial-flow fan and preferably a backward-curved centrifugal fan, comprising an impeller wheel provided with wings, an electric motor for rotating the impeller wheel, and a device for determining the air flow when the impeller wheel is rotating. The device for determining the air flow comprises a volumetric flow measuring wheel which is positioned in the air flow in front of the impeller wheel on the inflow side. The volumetric air flow is calculated or derived from the rotational speed of the volumetric flow measuring wheel.
IPC 8 full level
F04D 27/00 (2006.01); G01F 1/115 (2006.01)
CPC (source: EP US)
F04D 17/16 (2013.01 - US); F04D 19/002 (2013.01 - US); F04D 25/0666 (2013.01 - US); F04D 27/00 (2013.01 - US); F04D 27/001 (2013.01 - EP US); F04D 27/004 (2013.01 - US); F04D 29/281 (2013.01 - US); F04D 29/4213 (2013.01 - US); F04D 29/4226 (2013.01 - US); F04D 29/526 (2013.01 - US); G01F 1/10 (2013.01 - US); G01F 1/103 (2013.01 - EP US); G01F 1/11 (2013.01 - US); G01F 1/115 (2013.01 - EP); G01F 1/12 (2013.01 - US); G01F 1/125 (2013.01 - US); G01F 1/666 (2013.01 - EP); G01F 1/80 (2013.01 - US); G01F 1/82 (2013.01 - US); G01F 1/8454 (2013.01 - US); G01F 1/90 (2013.01 - US); F24F 2110/30 (2018.01 - US)
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)
WO 2020207542 A1 20201015; CN 113924419 A 20220111; DE 102019205041 A1 20201015; EP 3833877 A1 20210616; JP 2022527371 A 20220601; US 11768090 B2 20230926; US 2022397121 A1 20221215
DOCDB simple family (application)
DE 2020200015 W 20200309; CN 202080042120 A 20200309; DE 102019205041 A 20190409; EP 20720347 A 20200309; JP 2021559427 A 20200309; US 202017599972 A 20200309