EP 3921515 B1 20230607 - MULTISTAGE PUMP HOUSING AND MULTISTAGE GAS PUMP
Title (en)
MULTISTAGE PUMP HOUSING AND MULTISTAGE GAS PUMP
Title (de)
MEHRSTUFIGES PUMPENGEHÄUSE UND MEHRSTUFIGE GASPUMPE
Title (fr)
CORPS DE POMPE MULTIÉTAGÉE ET POMPE À GAZ MULTIÉTAGÉE
Publication
Application
Priority
EP 2019052939 W 20190206
Abstract (en)
[origin: WO2020160770A1] A multistage pump body comprises a first pumping chamber (20) and a second pumping chamber (21). A connecting duct (26a) puts an outlet (27) of the first pumping chamber (20) into communication with an inlet (28) of the second pumping chamber (21). A leaktight conduit (40) is provided for the circulation of a cooling liquid. The connecting duct (26a) is a lateral duct of the multistage pump body. A heat-conducting wall (33) partially delimits the connecting duct (26a) and has an external surface (34) on the outside. At least one portion of the connecting duct (26a) passes between this external surface (34) of the heat-conducting wall (33) and the leaktight conduit (40).
IPC 8 full level
F01C 21/10 (2006.01); F04C 23/00 (2006.01); F04C 29/04 (2006.01)
CPC (source: EP KR US)
F01C 21/10 (2013.01 - EP KR US); F04C 18/123 (2013.01 - KR US); F04C 18/126 (2013.01 - KR US); F04C 18/14 (2013.01 - US); F04C 23/001 (2013.01 - EP KR US); F04C 29/04 (2013.01 - EP KR US); F04C 29/12 (2013.01 - KR US); F04C 18/123 (2013.01 - EP); F04C 18/126 (2013.01 - EP); F04C 18/14 (2013.01 - EP); F05B 2210/12 (2013.01 - KR 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)
WO 2020160770 A1 20200813; AU 2019427999 A1 20210812; BR 112021014163 A2 20210921; CA 3128727 A1 20200813; CN 113396272 A 20210914; CN 113396272 B 20240719; EP 3921515 A1 20211215; EP 3921515 B1 20230607; EP 3921515 C0 20230607; ES 2951642 T3 20231024; JP 2022522108 A 20220414; JP 7390384 B2 20231201; KR 102612571 B1 20231211; KR 20210124385 A 20211014; PL 3921515 T3 20231009; US 12116895 B2 20241015; US 2022127962 A1 20220428
DOCDB simple family (application)
EP 2019052939 W 20190206; AU 2019427999 A 20190206; BR 112021014163 A 20190206; CA 3128727 A 20190206; CN 201980091417 A 20190206; EP 19704770 A 20190206; ES 19704770 T 20190206; JP 2021545806 A 20190206; KR 20217028412 A 20190206; PL 19704770 T 20190206; US 201917424513 A 20190206