EP 2609332 A1 20130703 - MEMBRANE PUMP HAVING AN INERTIALLY CONTROLLED LEAK EXTENSION VALVE
Title (en)
MEMBRANE PUMP HAVING AN INERTIALLY CONTROLLED LEAK EXTENSION VALVE
Title (de)
MEMBRANPUMPE MIT TRÄGHEITSGESTEUERTEM LECKERGÄNZUNGSVENTIL
Title (fr)
POMPE À MEMBRANE MUNIE D'UNE SOUPAPE DE COMPENSATION DE FUITE COMMANDÉE PAR INERTIE
Publication
Application
Priority
- DE 102010039829 A 20100826
- EP 2011064045 W 20110815
Abstract (en)
[origin: CA2808388A1] The invention relates to a membrane pump having a delivery chamber (9) separated from a hydraulic chamber (8) by means of a membrane (1), wherein the delivery chamber (9) is connected to one intake connection and one pressure connection and the hydraulic chamber (8) that can be filled with a working fluid can have a pulsating working fluid pressure applied thereto, wherein the hydraulic chamber (8) is connected to a working fluid reservoir (15) by means of a leak extension valve (6), wherein the leak extension valve comprises a closing body that can be displaced back and forth between a closed position in which the valve passage is closed, and an open position in which the valve passage is opened, said body being held in the closed position with the aid of a pressure element, wherein the pressure element is designed such that, when the pressure in the hydraulic chamber (8) is less than a set pressure pL, the closing body (16) is displaced in the direction of the open position. In order to provide a membrane pump having a leak extension valve reducing or even eliminating the disadvantages of the state of the art, according to the invention the mass of the closing body (16) is so great that the closing body (16) is displaced by no more than 0.2 mm in the direction of the open position in case of a pressure drop to 0 bar lasting no longer than 1 millisecond due to a pressure surge in the hydraulic chamber (8).
IPC 8 full level
F04B 43/00 (2006.01); F04B 43/067 (2006.01)
CPC (source: EP KR US)
F04B 43/0081 (2013.01 - EP KR US); F04B 43/067 (2013.01 - EP US); F04B 43/073 (2013.01 - EP KR US); F04B 53/10 (2013.01 - KR); F05B 2210/11 (2013.01 - KR); Y10S 417/00 (2013.01 - KR)
Citation (search report)
See references of WO 2012025423A1
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 102010039829 A1 20120301; BR 112013004584 A2 20160906; CA 2808388 A1 20120301; CA 2808388 C 20180220; CN 103154517 A 20130612; CN 103154517 B 20160120; EP 2609332 A1 20130703; JP 2013536364 A 20130919; JP 5862903 B2 20160216; KR 20130138194 A 20131218; RU 2013113209 A 20141010; RU 2573069 C2 20160120; US 2013209280 A1 20130815; WO 2012025423 A1 20120301
DOCDB simple family (application)
DE 102010039829 A 20100826; BR 112013004584 A 20110815; CA 2808388 A 20110815; CN 201180040469 A 20110815; EP 11745539 A 20110815; EP 2011064045 W 20110815; JP 2013525247 A 20110815; KR 20137006053 A 20110815; RU 2013113209 A 20110815; US 201113818119 A 20110815