EP 0413987 B1 19961227 - Axial fan
Title (en)
Axial fan
Title (de)
Axialventilator
Title (fr)
Ventilateur axial
Publication
Application
Priority
DE 3927791 A 19890823
Abstract (en)
[origin: EP0413987A2] Axial fan which contains an impeller (6) provided with rotor blades (14), which impeller is arranged in a flow duct (4) enclosed by a wall (1). In or on the wall (1) in the area of the blade tips (15) at least one opening is provided which is equipped on the duct side with a cover (21) having through holes (22). <IMAGE>
IPC 1-7
IPC 8 full level
F04D 27/02 (2006.01); F04D 29/52 (2006.01); F04D 29/54 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP)
F04D 19/002 (2013.01); F04D 29/526 (2013.01); F04D 29/547 (2013.01); F04D 29/664 (2013.01); F04D 29/665 (2013.01)
Citation (examination)
"Ventilatoren", B. ECK, 4. Auflage, 1962, Springer-Verlag Berlin, Göttingen, Heidelberg, "Schallabsorption durch Resonatoren". Seite 490
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0413987 A2 19910227; EP 0413987 A3 19910925; EP 0413987 B1 19961227; AT E146855 T1 19970115; DD 297208 A5 19920102; DE 3927791 A1 19910228; DE 59010616 D1 19970206; DK 0413987 T3 19970609; ES 2095226 T3 19970216
DOCDB simple family (application)
EP 90114295 A 19900726; AT 90114295 T 19900726; DD 34357590 A 19900822; DE 3927791 A 19890823; DE 59010616 T 19900726; DK 90114295 T 19900726; ES 90114295 T 19900726