EP 4350257 A4 20240717 - REFRIGERANT LEAKAGE DETERMINATION DEVICE, CONTROL DEVICE, REFRIGERANT LEAKAGE DETERMINATION PROGRAM, AND REFRIGERANT LEAKAGE DETERMINATION METHOD
Title (en)
REFRIGERANT LEAKAGE DETERMINATION DEVICE, CONTROL DEVICE, REFRIGERANT LEAKAGE DETERMINATION PROGRAM, AND REFRIGERANT LEAKAGE DETERMINATION METHOD
Title (de)
KÄLTEMITTELLECKAGEBESTIMMUNGSVORRICHTUNG, STEUERUNGSVORRICHTUNG, KÄLTEMITTELLECKAGEBESTIMMUNGSPROGRAMM UND KÄLTEMITTELLECKAGEBESTIMMUNGSVERFAHREN
Title (fr)
DISPOSITIF DE DÉTERMINATION DE FUITE DE FLUIDE FRIGORIGIQUE, DISPOSITIF DE COMMANDE, PROGRAMME DE DÉTERMINATION DE FUITE DE FLUIDE FRIGORIFIQUE ET PROCÉDÉ DE DÉTERMINATION DE FUITE DE FLUIDE FRIGORIFIQUE
Publication
Application
Priority
JP 2021020162 W 20210527
Abstract (en)
[origin: WO2022249387A1] A refrigerant leakage determination device (300) comprises a refrigeration cycle device (100), a connection device (105A, 105B), and a control device (200). The refrigeration cycle device (100) is configured from an indoor unit (100A) and an outdoor unit (100B). The refrigeration cycle device (100) has a refrigerant circuit (120) and performs a refrigeration cycle in which a refrigerant circulates through the refrigerant circuit (120). The connection device (105A, 105B) has a communication port that communicates with the internal space of the refrigerant circuit (120), and is connected to a pressure sensor (104) that measures the refrigerant pressure in the internal space. The control device (200) causes the refrigeration cycle device (100) to perform oil recovery operation to collect oil in the refrigerant circuit (120) to a compressor (109), and determines refrigerant leakage from the refrigerant circuit (120) by comparing a reference pressure with the refrigerant pressure measured by the pressure sensor (104) after the oil recovery operation.
IPC 8 full level
F25B 49/02 (2006.01); F25B 1/00 (2006.01); F25B 13/00 (2006.01); F25B 49/00 (2006.01)
CPC (source: EP US)
F25B 13/00 (2013.01 - EP); F25B 31/002 (2013.01 - US); F25B 49/005 (2013.01 - EP); F25B 49/02 (2013.01 - US); F25B 2313/0314 (2013.01 - EP); F25B 2313/0315 (2013.01 - EP); F25B 2400/19 (2013.01 - EP); F25B 2500/16 (2013.01 - US); F25B 2500/222 (2013.01 - EP US); F25B 2600/2513 (2013.01 - US); F25B 2700/1933 (2013.01 - EP); F25B 2700/195 (2013.01 - EP US); F25B 2700/21 (2013.01 - US); F25B 2700/21151 (2013.01 - EP); F25B 2700/21152 (2013.01 - EP)
Citation (search report)
- [I] JP 2007163107 A 20070628 - DAIKIN IND LTD
- [A] JP H04225769 A 19920814 - MITSUBISHI HEAVY IND LTD
- [A] JP 2002213847 A 20020731 - BEHR GMBH & CO
- See also references of WO 2022249387A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4350257 A1 20240410; EP 4350257 A4 20240717; CN 117321360 A 20231229; JP WO2022249387 A1 20221201; US 2024191924 A1 20240613; WO 2022249387 A1 20221201
DOCDB simple family (application)
EP 21943036 A 20210527; CN 202180098354 A 20210527; JP 2021020162 W 20210527; JP 2023523855 A 20210527; US 202118553347 A 20210527