EP 1691150 B1 20161123 - REFRIGERANT LEAKAGE DETECTING DEVICE AND REFRIGERATOR USING THE SAME
Title (en)
REFRIGERANT LEAKAGE DETECTING DEVICE AND REFRIGERATOR USING THE SAME
Title (de)
VORRICHTUNG ZUR ERFASSUNG VON KÄLTEMITTELLECKAGE UND DIESE VERWENDENDE KÜHLVORRICHTUNG
Title (fr)
DISPOSITIF DE DETECTION DE FUITE DE REFRIGERANT ET REFRIGERATEUR UTILISANT UN TEL DISPOSITIF
Publication
Application
Priority
- JP 2004003451 W 20040312
- JP 2003329149 A 20030919
Abstract (en)
[origin: EP1691150A1] In a refrigerator using a flammable coolant, a coolant leakage detecting device is provided with which it is possible to improve the detection accuracy of coolant leakages certainly in correspondence with input fluctuations of a compressor. When a coolant leak occurs on the low-pressure side of a refrigerating cycle, because the internal pressure of the cycle in operation is negative, air is sucked in and the power increases. When the value of this increase in an instantaneous power for determination Wi(t) rises above a reference increase value G1, it is determined that there is a low-pressure side leak. On the other hand, when a coolant leak occurs on the high-pressure side of the refrigerating cycle, the internal pressure of the cycle in operation decreases and along with this the power decreases. When the value of this decrease in the instantaneous power for detection Wi(t) exceeds a reference decrease value G2, it is determined that there is a coolant leak on the high-pressure side.
IPC 8 full level
F25B 49/00 (2006.01); F25D 13/00 (2006.01); F25B 49/02 (2006.01); H02P 21/00 (2016.01)
CPC (source: EP KR)
F25B 49/00 (2013.01 - KR); F25B 49/005 (2013.01 - EP); F25B 49/02 (2013.01 - KR); F25B 2400/12 (2013.01 - EP); F25B 2500/222 (2013.01 - EP); F25D 2400/04 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1691150 A1 20060816; EP 1691150 A4 20110706; EP 1691150 B1 20161123; CN 100359264 C 20080102; CN 1764812 A 20060426; JP 2005090925 A 20050407; KR 20060058050 A 20060529; WO 2005028972 A1 20050331
DOCDB simple family (application)
EP 04720265 A 20040312; CN 200480007956 A 20040312; JP 2003329149 A 20030919; JP 2004003451 W 20040312; KR 20057018295 A 20050928