EP 3859249 B1 20230830 - REFRIGERANT LEAKAGE DETERMINATION DEVICE, FREEZING DEVICE INCLUDING THIS REFRIGERANT LEAKAGE DETERMINATION DEVICE, AND REFRIGERANT LEAKAGE DETERMINATION METHOD
Title (en)
REFRIGERANT LEAKAGE DETERMINATION DEVICE, FREEZING DEVICE INCLUDING THIS REFRIGERANT LEAKAGE DETERMINATION DEVICE, AND REFRIGERANT LEAKAGE DETERMINATION METHOD
Title (de)
KÄLTEMITTELLECKBESTIMMUNGSVORRICHTUNG, GEFRIERVORRICHTUNG MIT DIESER KÄLTEMITTELLECKBESTIMMUNGSVORRICHTUNG UND KÄLTEMITTELLECKBESTIMMUNGSVERFAHREN
Title (fr)
DISPOSITIF DE DÉTERMINATION DE FUITE DE FLUIDE FRIGORIGÈNE, DISPOSITIF DE CONGÉLATION COMPRENANT CE DISPOSITIF DE DÉTERMINATION DE FUITE DE FLUIDE FRIGORIGÈNE ET PROCÉDÉ DE DÉTERMINATION DE FUITE DE FLUIDE FRIGORIGÈNE
Publication
Application
Priority
- JP 2018185173 A 20180928
- JP 2019037874 W 20190926
Abstract (en)
[origin: EP3859249A1] A refrigerant leakage determination device (60) includes a calculator (66) and a determination unit (67). The calculator (66) calculates a deviation degree of a refrigerant circuit (20) from a normal state based on data related to operation of a refrigeration apparatus (1). The determination unit (67) determines refrigerant leakage or estimates refrigerant leakage occurrence time based on a calculation result of the calculator (66). The calculator (66) calculates first and second index values respectively from data related to operation of the refrigeration apparatus (1) in a first period and a second period that differs in length from the first period and calculates the deviation degree of the refrigerant circuit (20) from the normal state based on the first and second index values. The determination unit (67) determines refrigerant leakage or estimates refrigerant leakage occurrence time based on the deviation degree of the refrigerant circuit (20) from the normal state.
IPC 8 full level
F25B 49/02 (2006.01); F25B 40/00 (2006.01); F25B 41/20 (2021.01); F25B 49/00 (2006.01); F25D 11/00 (2006.01)
CPC (source: EP US)
F25B 40/00 (2013.01 - EP); F25B 41/20 (2021.01 - EP); F25B 49/005 (2013.01 - EP); F25B 49/02 (2013.01 - US); F25B 2400/13 (2013.01 - EP); F25B 2500/19 (2013.01 - EP); F25B 2500/222 (2013.01 - EP US); F25B 2700/21152 (2013.01 - EP 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)
EP 3859249 A1 20210804; EP 3859249 A4 20211103; EP 3859249 B1 20230830; CN 112752938 A 20210504; CN 112752938 B 20220830; DK 3859249 T3 20231113; JP 2020056509 A 20200409; JP 6887979 B2 20210616; US 2022034568 A1 20220203; WO 2020067296 A1 20200402
DOCDB simple family (application)
EP 19865774 A 20190926; CN 201980062442 A 20190926; DK 19865774 T 20190926; JP 2018185173 A 20180928; JP 2019037874 W 20190926; US 201917278862 A 20190926