EP 2423508 A3 20160518 - capacity control for a screw compressor
Title (en)
capacity control for a screw compressor
Title (de)
Leistungsregelung für einen Schraubenverdichter
Title (fr)
Contrôle du capacité pour un compresseur à vis
Publication
Application
Priority
JP 2010192546 A 20100830
Abstract (en)
[origin: EP2423508A2] A screw compressor having a discharge casing (16). The discharge casing (16) includes a discharge side end face that abuts on an end face of a main casing (15) to cover the opening of a bore (20), a discharge port (23A, 23B; 25A, 25B) that is formed on the discharge side end face, a discharge chamber (26) that discharges a compressed gas from a compression operation chamber (36A, 36B) through the discharge port (23A, 23B; 25A, 25B), a valve hole (28) that is disposed near the discharge port (23A, 23B; 25A, 25B) on the female rotor side of the discharge side end face and open at a position opposite the direction of female rotor rotation, a bypass groove (29) that permits the valve hole (28) to communicate with a discharge flow path, and a valve disc (31) that is disposed in the valve hole (28). The screw compressor also includes a valve disc drive device (30) that opens and closes the valve disc (31), and a control device (112) that detects whether the compression operation chamber (36A, 36B) is over-compressed, and if the compression operation chamber (36A, 36B) is over-compressed, controls the valve disc drive device (30) so as to open the valve disc (31).
IPC 8 full level
F04C 18/16 (2006.01); F04C 28/12 (2006.01); F04C 28/16 (2006.01); F04C 28/26 (2006.01)
CPC (source: EP)
F04C 18/16 (2013.01); F04C 28/125 (2013.01); F04C 28/16 (2013.01); F04C 28/26 (2013.01); F04C 2270/185 (2013.01)
Citation (search report)
- [XAYI] WO 2010035592 A1 20100401 - HITACHI APPLIANCES INC [JP], et al
- [XAYI] WO 8910489 A1 19891102 - SVENSKA ROTOR MASKINER AB [SE]
- [Y] JP S6287687 A 19870422 - KOBE STEEL LTD
- [Y] EP 2031249 A2 20090304 - HITACHI APPLIANCES INC [JP]
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 2423508 A2 20120229; EP 2423508 A3 20160518; EP 2423508 B1 20170531; CN 102384087 A 20120321; CN 102384087 B 20141210; ES 2638569 T3 20171023; JP 2012047157 A 20120308; JP 5389755 B2 20140115; TW 201217650 A 20120501; TW I494508 B 20150801
DOCDB simple family (application)
EP 11177400 A 20110812; CN 201110237432 A 20110818; ES 11177400 T 20110812; JP 2010192546 A 20100830; TW 100124459 A 20110711