EP 1828613 A1 20070905 - DELIVERY UNIT
Title (en)
DELIVERY UNIT
Title (de)
F\RDERAGGREGAT
Title (fr)
UNITE D'ACHEMINEMENT
Publication
Application
Priority
- EP 2005055314 W 20051017
- DE 102004060904 A 20041217
Abstract (en)
[origin: WO2006063887A1] In prior art, delivery units comprise a running wheel which is arranged in a pump chamber and which can be driven in a rotated manner by means of an actuator and comprise two front sides whereby a front wall of the pump chamber is arranged opposite thereto, and also comprises several recesses for storing, in a hydrodynamic manner, in both front sides of the running wheel. One disadvantage of the delivery unit is that dirt particles can collect in the recesses. When the dirt particles are flushed out from the recesses, they produce, in the region between the recesses which are arranged in a circular manner, increased friction and also stress marks and the axial gap between the running wheel and the pump chamber is smaller than in the region of the recesses. The inventive delivery unit reduces the friction acting upon the running wheel and increases efficiency. According to the invention, at least two adjacent recesses (38) of the at least one front side (28,29) and/or the at least one front wall (15,16) are connected together by, respectively at least one groove (42).
IPC 8 full level
F04D 5/00 (2006.01); F04D 29/18 (2006.01)
CPC (source: EP KR US)
F04D 5/002 (2013.01 - EP KR US); F04D 29/188 (2013.01 - EP KR US); F05D 2210/11 (2013.01 - KR); F05D 2240/30 (2013.01 - KR); F05D 2260/60 (2013.01 - KR); Y10S 415/00 (2013.01 - KR); Y10S 417/00 (2013.01 - KR)
Citation (search report)
See references of WO 2006063887A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006063887 A1 20060622; CN 101080574 A 20071128; DE 102004060904 A1 20060629; EP 1828613 A1 20070905; JP 2008523317 A 20080703; KR 20070086257 A 20070827; US 2009238680 A1 20090924
DOCDB simple family (application)
EP 2005055314 W 20051017; CN 200580042937 A 20051017; DE 102004060904 A 20041217; EP 05801511 A 20051017; JP 2007545998 A 20051017; KR 20077013551 A 20070615; US 72134405 A 20051017