EP 2185823 A4 20110427 - QUIET FAN
Title (en)
QUIET FAN
Title (de)
LEISES GEBLÄSE
Title (fr)
VENTILATEUR SILENCIEUX
Publication
Application
Priority
- CA 2008001375 W 20080728
- CA 2598867 A 20070731
Abstract (en)
[origin: WO2009015469A2] The invention illustrates the assembly of a fan structure comprising a transmission shaft to each end of the shaft of which a ball bearing is fitted. In addition, a spring is incorporated between these two components, between the rotor and the stator, stabilizing the centrifugal force in order to achieve better rotational dynamic balancing on the propulsion of its axis. In fact, with this type of assembly it is possible greatly to reduce the bowing-related problems that are encountered in later-model standard assemblies in which a fan impeller is attached to one end of the driving shaft thus accentuating the problems due to loadings that may exceed the elastic limit of the materials used thus introducing irreparable mechanical deformation.
IPC 8 full level
F04D 25/08 (2006.01); F04D 29/059 (2006.01); F04D 29/26 (2006.01); F04D 29/32 (2006.01); F04D 29/66 (2006.01)
CPC (source: EP)
F04D 25/062 (2013.01); F04D 29/059 (2013.01); F04D 29/325 (2013.01); F04D 29/384 (2013.01); F04D 29/663 (2013.01); F04D 29/666 (2013.01); Y02B 10/30 (2013.01)
Citation (search report)
- [X] GB 2227793 A 19900808 - PAPST MOTOREN GMBH & CO KG [DE]
- [X] JP 2002070791 A 20020308 - JAPAN SERVO
- See references of WO 2009015469A2
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 MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
CA 2598867 A1 20090131; EP 2185823 A2 20100519; EP 2185823 A4 20110427; WO 2009015469 A2 20090205; WO 2009015469 A3 20090402
DOCDB simple family (application)
CA 2598867 A 20070731; CA 2008001375 W 20080728; EP 08783288 A 20080728