EP 3683520 B1 20211103 - REFRIGERATION CYCLE DEVICE AND LIQUID HEATING DEVICE HAVING THE SAME
Title (en)
REFRIGERATION CYCLE DEVICE AND LIQUID HEATING DEVICE HAVING THE SAME
Title (de)
KÄLTEKREISLAUFVORRICHTUNG UND FLÜSSIGKEITSHEIZVORRICHTUNG DAMIT
Title (fr)
DISPOSITIF À CYCLE DE RÉFRIGÉRATION ET DISPOSITIF DE CHAUFFAGE DE LIQUIDE LE COMPRENANT
Publication
Application
Priority
JP 2019006714 A 20190118
Abstract (en)
[origin: EP3683520A1] The present invention provides a refrigeration cycle device and a liquid heating device having the refrigeration cycle device. The refrigeration cycle device includes: a main refrigerant circuit 10 formed by sequentially connecting, to one another through a pipe 16, a compressing mechanism 11, a utilization-side heat exchanger 12, an intermediate heat exchanger 13, a first expansion device 14 and a heat source-side heat exchanger 15; a bypass refrigerant circuit 20 in which the refrigerant branches off from the pipe 16 between the utilization-side heat exchanger 12 and the first expansion device 14, the branched refrigerant is decompressed by a second expansion device 21 and thereafter, the refrigerant heat-exchanges, in the intermediate heat exchanger 13, with the former refrigerant which flows through the main refrigerant circuit 10, and the refrigerant joins up with the refrigerant which is on an intermediate stage of compression of a compression rotary element; and a control device 60. The control device 60 controls a valve opening of the second expansion device 21 such that a state where pressure of refrigerant after it is decompressed by the second expansion device 21 exceeds critical pressure is maintained. Therefore, even when high pressure is further increased, COP is not deteriorated by appropriately performing control.
IPC 8 full level
F25B 9/00 (2006.01); F25B 25/00 (2006.01); F25B 49/02 (2006.01)
CPC (source: EP)
F25B 9/008 (2013.01); F25B 25/005 (2013.01); F25B 49/02 (2013.01); F25B 2339/047 (2013.01); F25B 2400/13 (2013.01); F25B 2600/2509 (2013.01); F25B 2700/21 (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
DOCDB simple family (publication)
EP 3683520 A1 20200722; EP 3683520 B1 20211103; DK 3683520 T3 20211220; ES 2904478 T3 20220405; JP 2020115068 A 20200730; JP 7012208 B2 20220128
DOCDB simple family (application)
EP 19191742 A 20190814; DK 19191742 T 20190814; ES 19191742 T 20190814; JP 2019006714 A 20190118