|Numéro de publication||2020/202246|
|Statut||Délivré - en vigueur|
|Date de dépôt||2019-03-29|
|Date de publication||2020-10-08|
|Propriétaire||HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japon)|
AbrégéProvided is a highly reliable air-conditioner capable of setting an indoor heat exchanger in a clean state. An air-conditioner (100) is provided with: a refrigerant circuit (Q) where a refrigerant is circulated sequentially through a compressor (11), an outdoor heat exchanger (12), an outdoor expansion valve (14), an indoor expansion valve (15), and an indoor heat exchanger (16); and a control unit. The control unit causes the indoor heat exchanger (16) to function as an evaporator, freezes the indoor heat exchanger (16), and causes the indoor heat exchanger (16) to function as a condenser without stopping the compressor (11) after the indoor heat exchanger (16) has been frozen, or closes or opens to a certain degree the indoor expansion valve (15) by stopping the compressor (11) after the indoor heat exchanger (16) has been frozen, the opening to the certain degree being less than the full opening of the indoor expansion valve (15).
Classes IPC ?
- F24F 11/43 - Defrosting; Preventing freezing of indoor units
- F24F 11/48 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling