EP 4130615 A1 20230208 - OUTDOOR UNIT AND REFRIGERATION CYCLE DEVICE
Title (en)
OUTDOOR UNIT AND REFRIGERATION CYCLE DEVICE
Title (de)
AUSSENEINHEIT UND KÜHLZYKLUSVORRICHTUNG
Title (fr)
UNITÉ EXTERNE ET DISPOSITIF À CYCLE FRIGORIFIQUE
Publication
Application
Priority
JP 2020014278 W 20200327
Abstract (en)
A refrigeration cycle apparatus (1) includes a load device (3) and an outdoor unit (2). The outdoor unit (2) includes a compressor (10), a condenser (20), a heat exchanger (30), a second expansion valve (40), the second expansion valve (40), an injection flow path (101) configured to cause refrigerant to flow from a pipe (81) between an outlet of the condenser (20) and an inlet of a first passage (H1) to the compressor (10), a controller (100), and a notification device (150). The injection flow path (101) is provided with a first refrigerant flow path (91 to 94), a second refrigerant flow path (96), a receiver (73), a third expansion valve (71), and a flow rate control valve (72). When a supercritical state is reached where a discharge pressure of the compressor (10) exceeds a critical pressure of the refrigerant, the controller (100) determines whether or not the refrigerant is insufficient, based on a degree of opening of the flow rate control valve (72).
IPC 8 full level
F25B 49/02 (2006.01); F25B 1/00 (2006.01)
CPC (source: EP)
F25B 41/39 (2021.01); F25B 45/00 (2013.01); F25B 49/02 (2013.01); F25B 2400/04 (2013.01); F25B 2400/23 (2013.01); F25B 2600/2509 (2013.01); F25B 2600/2513 (2013.01); F25B 2600/2523 (2013.01); F25B 2700/1931 (2013.01); F25B 2700/1933 (2013.01); F25B 2700/21151 (2013.01); F25B 2700/21152 (2013.01); F25B 2700/21162 (2013.01); F25B 2700/21163 (2013.01)
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 4130615 A1 20230208; EP 4130615 A4 20230426; JP 7282258 B2 20230526; JP WO2021192292 A1 20210930; WO 2021192292 A1 20210930
DOCDB simple family (application)
EP 20927414 A 20200327; JP 2020014278 W 20200327; JP 2022510390 A 20200327