EP 2732164 B1 20150909 - GEAR RING PUMP
Title (en)
GEAR RING PUMP
Title (de)
ZAHNRINGPUMPE
Title (fr)
POMPE À ENGRENAGES
Publication
Application
Priority
- DE 102011107157 A 20110714
- DE 2012000650 W 20120627
Abstract (en)
[origin: WO2013007233A1] The invention relates to a gear ring pump, in particular for use in small pump assemblies which are preferably driven by an electric motor, which are produced as pump kits, and which are used in vehicle and engine construction. The aim of the invention is to develop a gear ring pump which can be used in pump assemblies with a small housing outer diameter, the pump control times of which can be easily modified with respect to the production process in accordance with the respective customer request, and which always ensures an optimal axial gap even when using very inexpensive assemblies, such as pump housings made of aluminum and impellers made of steel, even under the extreme use conditions of an oil pump in conjunction with an internal combustion engine. The gear ring pump according to the invention is characterized in particular in that the pump bearing (6) is arranged in the housing cover (5), and a port support (18) is mounted in the pump housing (1) between the impeller set (8) and the end wall (3) of the working chamber (2) in a movable manner in the direction of the driveshaft (7) such that the port support is prevented from rotating. The port support is equipped with a suction kidney (12) and a pressure kidney (13) which pass through the port support (18) separately from each other across the entire width of the port support (18), wherein the thickness of the port support (18) approximately matches the thickness of the impeller set (8) but can also project past the thickness of the impeller set by up to 20%. The thermal expansion coefficient of the port support (18) is approximately 70% to 120% greater than the thermal expansion coefficient of the pump housing (1). The driveshaft (7) which is rotationally fixed to the inner rotor (9) does not protrude into the port support (18) under any circumstance. The port support (18) is designed or coated so as to be wear-resistant at the end face adjacent to the impeller set (8), and/or a sheet metal slide (25) which is rotationally fixed to the port support is arranged between the impeller set (8) and the port support (18).
IPC 8 full level
F04C 2/10 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F04C 2/10 (2013.01 - US); F04C 2/102 (2013.01 - EP US); F04C 15/0003 (2013.01 - US); F04C 15/0026 (2013.01 - EP US); F04C 2230/602 (2013.01 - EP US)
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
DOCDB simple family (publication)
DE 102011107157 A1 20130117; DE 102011107157 B4 20130228; EP 2732164 A1 20140521; EP 2732164 B1 20150909; ES 2553790 T3 20151211; US 2014154125 A1 20140605; US 9309885 B2 20160412; WO 2013007233 A1 20130117; WO 2013007233 A4 20130307
DOCDB simple family (application)
DE 102011107157 A 20110714; DE 2012000650 W 20120627; EP 12746262 A 20120627; ES 12746262 T 20120627; US 201214232007 A 20120627