EP 2255073 A4 20150415 - FAN SHROUD FOR HEAT EXCHANGE TOWER FANS
Title (en)
FAN SHROUD FOR HEAT EXCHANGE TOWER FANS
Title (de)
LÜFTERHAUBE FÜR WÄRMETAUSCHERTURMVENTILATOREN
Title (fr)
CAPOT DE REFOULEMENT DE VENTILATEUR POUR VENTILATEURS DE COLONNE D''ÉCHANGE THERMIQUE
Publication
Application
Priority
- US 2009033403 W 20090206
- US 3950108 A 20080228
Abstract (en)
[origin: US2009220334A1] A heat exchange tower which has at least one fan having fan blades and a fan shroud, and the fan shroud has a sound absorbing portion including an outer ring structure and a sound absorbing material disposed inside the outer ring structure and outside of the circle of rotation of the fan blades. A flared inlet portion is provided leading to the sound absorbing portion.
IPC 8 full level
F01D 5/22 (2006.01); F04D 29/52 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP US)
F04D 29/526 (2013.01 - EP US); F04D 29/664 (2013.01 - EP US)
Citation (search report)
- [I] US 4508486 A 19850402 - TINKER CHARLES L [US]
- [I] US 2002015640 A1 20020207 - NISHIYAMA TOSHIHIKO [JP], et al
- [I] US 3947148 A 19760330 - HOLT PAUL
- [A] US 4543218 A 19850924 - BARDO CHARLES J [US], et al
- [A] US 6182787 B1 20010206 - KRAFT ROBERT E [US], et al
- [A] US 5227095 A 19930713 - CURTIS HAROLD D [US]
- See references of WO 2009108477A1
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 TR
DOCDB simple family (publication)
US 2009220334 A1 20090903; EP 2255073 A1 20101201; EP 2255073 A4 20150415; EP 2255073 B1 20181128; ES 2712718 T3 20190514; JP 2011513688 A 20110428; TR 201902448 T4 20190321; TW 200946859 A 20091116; TW I553285 B 20161011; WO 2009108477 A1 20090903
DOCDB simple family (application)
US 3950108 A 20080228; EP 09715025 A 20090206; ES 09715025 T 20090206; JP 2010548783 A 20090206; TR 201902448 T 20090206; TW 98105316 A 20090219; US 2009033403 W 20090206