EP 4265980 A4 20240508 - COLD HEAT SOURCE UNIT AND REFRIGERATION CYCLE DEVICE
Title (en)
COLD HEAT SOURCE UNIT AND REFRIGERATION CYCLE DEVICE
Title (de)
KALTWÄRMEQUELLENEINHEIT UND KÄLTEKREISLAUFVORRICHTUNG
Title (fr)
ENSEMBLE SOURCE DE CHALEUR FROIDE ET DISPOSITIF À CYCLE FRIGORIFIQUE
Publication
Application
Priority
JP 2020047521 W 20201218
Abstract (en)
[origin: EP4265980A1] A cold source unit (2) includes: a refrigerant flow path (F1) to be connected to a load apparatus (3) and thereby form a circulation flow path in which refrigerant circulates; a compressor (10) disposed in the refrigerant flow path (F1); an oil separator (20) disposed on a discharge side of the compressor (10) in the refrigerant flow path (F1); an oil return path (F2) to return refrigeration oil from the oil separator (20) to the compressor (10); a flow rate adjustment device (LEV2) disposed in the oil return path (F2) and configured to adjust a flow rate of fluid flowing in the oil return path (F2); a first pressure sensor (131) to detect a pressure on a suction side of the compressor (10); a second pressure sensor (132) to detect a pressure on the discharge side of the compressor; and a controller (100) to control the opening of the flow rate adjustment device (LEV2) based on the pressure (PL) detected by the first pressure sensor (131) and the pressure (PH) detected by the second pressure sensor.
IPC 8 full level
F25B 31/00 (2006.01)
CPC (source: EP)
F25B 31/004 (2013.01); F25B 41/20 (2021.01); F25B 49/02 (2013.01); F25B 2700/03 (2013.01); F25B 2700/1931 (2013.01); F25B 2700/1933 (2013.01); F25B 2700/21152 (2013.01)
Citation (search report)
- [XY] EP 3306231 A1 20180411 - MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD [JP]
- [XY] CN 110953754 A 20200403 - JOHNSON CONTROLS HITACHI AIR CONDITIONING LTD
- [Y] CN 105928251 A 20160907 - UNIV NINGBO TECHNOLOGY
- [Y] JP 2001082815 A 20010330 - MITSUBISHI ELECTRIC CORP
- See also references of WO 2022130637A1
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 4265980 A1 20231025; EP 4265980 A4 20240508; JP WO2022130637 A1 20220623; WO 2022130637 A1 20220623
DOCDB simple family (application)
EP 20966023 A 20201218; JP 2020047521 W 20201218; JP 2022569678 A 20201218