EP 4051906 A1 20220907 - COOLANT PUMP HAVING AN IMPROVED GAP SEAL
Title (en)
COOLANT PUMP HAVING AN IMPROVED GAP SEAL
Title (de)
KÜHLMITTELPUMPE MIT VERBESSERTER SPALTDICHTUNG
Title (fr)
POMPE À LIQUIDE DE REFROIDISSEMENT À JOINT D'INTERSTICE AMÉLIORÉ
Publication
Application
Priority
- DE 102019129494 A 20191031
- EP 2020074437 W 20200902
Abstract (en)
[origin: WO2021083568A1] The invention relates to a coolant pump, which comprises a rotating slide ring (4), which is arranged on the pump impeller (2) at an axial end of the entry opening, and a static slide ring (5), which is arranged on the pump housing (1) around the mouth of the inlet (6) such that the static slide ring faces the rotating slide ring (4). The rotating slide ring (4) has a sliding surface (40) and the static slide ring (5) has a sliding surface (50). The sliding surfaces (40, 50) face each other and form a plain bearing, which absorbs a force directed axially from the pump impeller (2) to the pump housing (1). A microstructure for producing a hydrodynamic lubrication film between the sliding surfaces (40, 50) is formed on at least one of the sliding surfaces (40, 50) facing each other. The microstructure comprises cavities, which are designed to accumulate liquid coolant on the at least one sliding surface (40, 50).
IPC 8 full level
F04D 29/041 (2006.01); F04D 29/06 (2006.01); F04D 29/16 (2006.01); F04D 29/62 (2006.01); F16C 17/04 (2006.01); F16C 33/10 (2006.01); F16J 15/34 (2006.01)
CPC (source: CN EP US)
F04D 29/0413 (2013.01 - CN EP US); F04D 29/061 (2013.01 - CN EP); F04D 29/167 (2013.01 - CN EP US); F04D 29/622 (2013.01 - CN EP US); F16C 17/026 (2013.01 - CN EP); F16C 33/1065 (2013.01 - CN EP); F16C 33/107 (2013.01 - CN EP); F16J 15/3424 (2013.01 - CN EP); F04D 7/02 (2013.01 - US); F16C 2360/42 (2013.01 - CN EP)
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)
DE 102019129494 A1 20210506; CN 114585837 A 20220603; EP 4051906 A1 20220907; US 2024102482 A1 20240328; WO 2021083568 A1 20210506
DOCDB simple family (application)
DE 102019129494 A 20191031; CN 202080073499 A 20200902; EP 2020074437 W 20200902; EP 20767520 A 20200902; US 202017769086 A 20200902