EP 2679930 A4 20150429 - REFRIGERATION CYCLE APPARATUS
Title (en)
REFRIGERATION CYCLE APPARATUS
Title (de)
KÄLTEKREISLAUFVORRICHTUNG
Title (fr)
APPAREIL À CYCLE DE RÉFRIGÉRATION
Publication
Application
Priority
JP 2011053839 W 20110222
Abstract (en)
[origin: EP2679930A1] A refrigerating cycle system is provided with a compressor 1, an outdoor heat exchanger 2, an expansion valve 3 capable of controlling an opening thereof, and an indoor heat exchanger 4. The refrigerating cycle system is further provided with a bypass flow path 11 for causing a refrigerant in the middle of compression in the compressor to bypass toward a suction side of the compressor; a solenoid valve 12 for opening or closing the bypass flow path; and a controller 20 for controlling open state time of the solenoid valve, and closed state time thereof to adjust a flow rate of a refrigerant discharged from the compressor into a refrigerating cycle, thereby executing a capacity-control. The controller executes a control on the basis of a duty ratio, that is, a ratio of the open time of the solenoid valve against a duty period representing the sum of the open time of the solenoid valve, and the closed time thereof, and further, if a pressure on the suction side of the compressor when the solenoid valve is in the state is higher than a suction pressure before the solenoid valve is in the state by a allowable deviation, the controller controls the solenoid valve so as to be in the closed state, the closed time being decided on the basis of the duty period.
IPC 8 full level
CPC (source: EP)
F25B 49/022 (2013.01); F25B 13/00 (2013.01); F25B 2313/0314 (2013.01); F25B 2313/0315 (2013.01); F25B 2600/0261 (2013.01); F25B 2600/2513 (2013.01); F25B 2600/2521 (2013.01); F25B 2700/2104 (2013.01); F25B 2700/2106 (2013.01)
Citation (search report)
- [A] WO 2007050063 A1 20070503 - CARRIER CORP [US], et al
- [IAY] WO 2008147532 A1 20081204 - COMPUTER PROCESS CONTROLS INC [US], et al
- [A] EP 1087142 A2 20010328 - COPELAND CORP [US]
- [Y] US 5224354 A 19930706 - ITO TAKESHI [JP], et al
- See references of WO 2012114454A1
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)
EP 2679930 A1 20140101; EP 2679930 A4 20150429; CN 103380334 A 20131030; CN 103380334 B 20160316; JP 5965895 B2 20160810; JP WO2012114454 A1 20140707; WO 2012114454 A1 20120830
DOCDB simple family (application)
EP 11859245 A 20110222; CN 201180067090 A 20110222; JP 2011053839 W 20110222; JP 2013500750 A 20110222