EP 4235046 A1 20230830 - AIR CONDITIONER
Title (en)
AIR CONDITIONER
Title (de)
KLIMAANLAGE
Title (fr)
CLIMATISEUR
Publication
Application
Priority
- JP 2020178414 A 20201023
- JP 2021038644 W 20211019
Abstract (en)
An air conditioner includes a refrigerant circuit that is formed by connecting, by a refrigerant pipe, an indoor unit including an indoor heat exchanger to an outdoor unit including a compressor, an outdoor heat exchanger, and an expansion valve, where the refrigerant circuit is filled with a predetermined amount of a refrigerant. The air conditioner includes an acquisition unit that regularly acquires an operating state quantity at a time of air conditioning operation, a storage unit that stores therein the operating state quantity that is acquired by the acquisition unit, an estimation model that estimates a refrigerant remaining amount in the refrigerant circuit by using the operating state quantity, a detection unit that detects, from the storage unit, one of a first operating state quantity being an operating state quantity in a state in which the refrigerant circuit meets a first stability condition and a second operating state quantity being an operating state quantity in a state in which the refrigerant circuit meets a second stability condition that is different from the first stability condition, and a control unit that estimates the remaining refrigerant amount in the refrigerant circuit by using the estimation model and the detected operating state quantity. Even when the air conditioner is actually operating, it is possible to estimate the remaining refrigerant amount in the refrigerant circuit.
IPC 8 full level
F24F 11/49 (2018.01); F25B 49/02 (2006.01)
CPC (source: EP US)
F24F 11/49 (2018.01 - EP US); F24F 11/62 (2018.01 - EP US); F25B 13/00 (2013.01 - EP); F25B 49/02 (2013.01 - EP); F24F 2140/20 (2018.01 - EP); F25B 2700/00 (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
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4235046 A1 20230830; AU 2021365042 A1 20230601; CN 116348711 A 20230627; JP 2022069305 A 20220511; JP 2022171923 A 20221111; JP 2022181215 A 20221207; JP 7147825 B2 20221005; US 2024027086 A1 20240125; WO 2022085691 A1 20220428
DOCDB simple family (application)
EP 21882832 A 20211019; AU 2021365042 A 20211019; CN 202180068295 A 20211019; JP 2020178414 A 20201023; JP 2021038644 W 20211019; JP 2022150031 A 20220921; JP 2022150032 A 20220921; US 202118032385 A 20211019