EP 3604973 B1 20231101 - AIR CONDITIONER
Title (en)
AIR CONDITIONER
Title (de)
KLIMAANLAGE
Title (fr)
AIR CONDITIONNÉ
Publication
Application
Priority
JP 2018142635 A 20180730
Abstract (en)
[origin: EP3604973A1] There is provided an air conditioner in which when one outdoor unit is performing a cooling operation, oil of the operating outdoor unit can be kept, and burn-in of a compressor due to oil exhaustion during the operation can be prevented. When the cooling operation is performed only by one GHP outdoor unit 2 in the GHP outdoor unit 2 and an EHP outdoor unit 3 and the other EHP outdoor unit 3 is stopped, a GHP control section 100 or an EHP control section 101 determines whether or not an oil level lowers below a certain level, on a basis of a detection value from a GHP oil level sensor 106 of the operating GHP outdoor unit 2, and when the control section determines that the oil level lowers below the certain level, the control section executes control to open an oil return valve 34 of the operating GHP outdoor unit 2.
IPC 8 full level
F25B 31/00 (2006.01); F25B 49/02 (2006.01)
CPC (source: CN EP)
F24F 3/065 (2013.01 - CN); F24F 5/001 (2013.01 - CN); F24F 11/89 (2017.12 - CN); F25B 31/004 (2013.01 - CN EP); F25B 49/02 (2013.01 - EP); F25B 2313/025 (2013.01 - EP); F25B 2600/2515 (2013.01 - EP); F25B 2700/03 (2013.01 - EP)
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 3604973 A1 20200205; EP 3604973 B1 20231101; CN 110779112 A 20200211; CN 110779112 B 20220823; JP 2020020492 A 20200206; JP 7199032 B2 20230105
DOCDB simple family (application)
EP 19185117 A 20190709; CN 201910660189 A 20190722; JP 2018142635 A 20180730