EP 2863151 A3 20150729 - Two-stage compression cycle
Title (en)
Two-stage compression cycle
Title (de)
Zweistufiger Kompressionszyklus
Title (fr)
Cycle de compression à deux étages
Publication
Application
Priority
JP 2013216944 A 20131018
Abstract (en)
[origin: EP2863151A2] An object is to provide a two-stage compression system that has no need for oil equalization between a lower-stage compressor and a higher-stage compressor, which makes it possible to simplify the configuration, and that makes it possible to reliably ensure appropriate oil levels in both the lower-stage compressor and the higher-stage compressor. In a two-stage compression system (1) in which a lower-stage compressor (2) and a higher-stage compressor (3) are disposed in series, and an oil separator (7) is provided on a discharge side of the higher-stage compressor (3), a first oil-returning circuit (11) and a second oil-returning circuit (12), which are independent of each other, are provided so as to be connected between the oil separator (7) and the lower-stage compressor (2) and the higher-stage compressor (3), and V1 > V2 is satisfied, assuming that the volume of oil returned to the lower-stage compressor (2) from the first oil-returning circuit (11) is V1, and the volume of oil returned to the higher-stage compressor (3) from the second oil-returning circuit (12) is V2.
IPC 8 full level
F25B 1/10 (2006.01); F25B 31/00 (2006.01); F25B 41/00 (2006.01)
CPC (source: EP US)
F25B 1/10 (2013.01 - EP US); F25B 31/004 (2013.01 - EP); F25B 41/40 (2021.01 - EP US); F25B 2400/072 (2013.01 - EP); F25B 2400/075 (2013.01 - EP)
Citation (search report)
- [XA] JP 2010014349 A 20100121 - MAEKAWA SEISAKUSHO KK
- [X] US 2012023978 A1 20120202 - CHAE SUNAM [KR], et al
- [XD] JP H07260263 A 19951013 - SANYO ELECTRIC CO
- [I] GB 1434927 A 19760512 - SVENSKA ROTOR MASKINER AB
- [XY] EP 2339265 A2 20110629 - SANYO ELECTRIC CO [JP]
- [Y] WO 2009119375 A1 20091001 - DAIKIN IND LTD [JP], et al
- [A] WO 2009105092 A1 20090827 - CARRIER CORP [US], et al
- [Y] EP 2487437 A1 20120815 - STIEBEL ELTRON GMBH & CO KG [DE]
- [A] US 2006201171 A1 20060914 - UNGER REUVEN Z [US], et al
- [A] JP H08121893 A 19960517 - HITACHI LTD
- [A] DE 102010026648 A1 20120112 - GEA GRASSO GMBH [DE]
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)
EP 2863151 A2 20150422; EP 2863151 A3 20150729; EP 2863151 B1 20191002; JP 2015078804 A 20150423; JP 6301101 B2 20180328
DOCDB simple family (application)
EP 14188877 A 20141014; JP 2013216944 A 20131018