EP 4382827 A1 20240612 - REFRIGERATION CIRCUIT DEVICE AND REFRIGERATION CIRCUIT CONTROL METHOD
Title (en)
REFRIGERATION CIRCUIT DEVICE AND REFRIGERATION CIRCUIT CONTROL METHOD
Title (de)
KÄLTEKREISLAUFVORRICHTUNG UND KÄLTEKREISLAUFSTEUERUNGSVERFAHREN
Title (fr)
DISPOSITIF DE CIRCUIT DE RÉFRIGÉRATION ET PROCÉDÉ DE COMMANDE DE CIRCUIT DE RÉFRIGÉRATION
Publication
Application
Priority
JP 2021029052 W 20210805
Abstract (en)
A refrigeration cycle apparatus includes: a high-stage circuit through which a high-stage refrigerant circulates, the high-stage circuit including a first compressor, a condenser, a first expansion device, and a cascade heat exchanger; and a low-stage circuit through which a low-stage refrigerant circulates, the low-stage circuit including a second compressor, the cascade heat exchanger, a receiver, a second expansion device, and an evaporator, wherein the cascade heat exchanger is configured to exchange heat between the high-stage refrigerant and the low-stage refrigerant, the low-stage refrigerant is a zeotropic refrigerant mixture, and a high pressure of the low-stage refrigerant circulating in the low-stage circuit is maintained to be equal to or lower than a pressure at or below which the low-stage refrigerant is non-flammable.
IPC 8 full level
CPC (source: EP)
F25B 1/005 (2013.01); F25B 7/00 (2013.01); F25B 9/006 (2013.01); F25B 49/005 (2013.01); F25B 49/02 (2013.01); F25B 49/022 (2013.01); F25B 25/005 (2013.01); F25B 43/006 (2013.01); F25B 2400/19 (2013.01); F25B 2400/22 (2013.01); F25B 2500/07 (2013.01); F25B 2500/27 (2013.01); F25B 2600/0253 (2013.01); F25B 2600/111 (2013.01); F25B 2600/2513 (2013.01); F25B 2600/2525 (2013.01); F25B 2700/1931 (2013.01); F25B 2700/195 (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 4382827 A1 20240612; CN 117716185 A 20240315; JP WO2023012960 A1 20230209; WO 2023012960 A1 20230209
DOCDB simple family (application)
EP 21952785 A 20210805; CN 202180101065 A 20210805; JP 2021029052 W 20210805; JP 2023539474 A 20210805