EP 4242551 A4 20231206 - REFRIGERATION CYCLE APPARATUS
Title (en)
REFRIGERATION CYCLE APPARATUS
Title (de)
KÄLTEKREISLAUFVORRICHTUNG
Title (fr)
APPAREIL À CYCLE DE RÉFRIGÉRATION
Publication
Application
Priority
JP 2020041211 W 20201104
Abstract (en)
[origin: EP4242551A1] A refrigeration cycle apparatus (100) comprises: a compressor (1); a first heat exchanger (2); a second heat exchanger (5); a first decompressing apparatus (4); an oil separator (3); a first circulation pathway in which a refrigerant circulates in an order of the compressor (1), the first heat exchanger (2), the oil separator (3), the first decompressing apparatus (4), and the second heat exchanger (5); an oil-returned pathway connecting between the oil separator (3) and a suction side of the compressor (1); a second decompressing apparatus (7) provided in the oil-returned pathway; and a controller (80) configured to control the first decompressing apparatus (4) and the second decompressing apparatus (7). The controller (80) is configured to set an operation mode to an oil collection mode (S106 in Fig. 6 and S202 in Fig. 7) in which the oil-returned pathway (61) is opened by adjusting a degree of decompression of the first decompressing apparatus (4) and a degree of decompression of the second decompressing apparatus (7) when the refrigerant and a refrigerating machine oil flowing in the first circulation pathway are separated in the oil separator (3).
IPC 8 full level
F25B 13/00 (2006.01); F25B 1/00 (2006.01); F25B 31/00 (2006.01); F25B 43/02 (2006.01)
CPC (source: EP US)
F25B 13/00 (2013.01 - EP US); F25B 31/004 (2013.01 - EP US); F25B 43/02 (2013.01 - EP); F25B 49/02 (2013.01 - EP); F25B 2313/02741 (2013.01 - US); F25B 2313/0314 (2013.01 - EP); F25B 2313/0315 (2013.01 - EP); F25B 2400/23 (2013.01 - EP US); F25B 2700/2109 (2013.01 - US); F25B 2700/21151 (2013.01 - EP); F25B 2700/21152 (2013.01 - EP US); F25B 2700/2117 (2013.01 - EP)
Citation (search report)
- [X] EP 1862749 A2 20071205 - SANDEN CORP [JP]
- [XD] JP H0886519 A 19960402 - MITSUBISHI ELECTRIC CORP
- See references of WO 2022097201A1
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 4242551 A1 20230913; EP 4242551 A4 20231206; JP WO2022097201 A1 20220512; US 2023375236 A1 20231123; WO 2022097201 A1 20220512
DOCDB simple family (application)
EP 20960755 A 20201104; JP 2020041211 W 20201104; JP 2022560541 A 20201104; US 202018027980 A 20201104