AIR CONDITIONER

Registre Brevet WIPO
Numéro d'application JP2020023544
Numéro de publication 2021/255816
Statut Délivré - en vigueur
Date de dépôt 2020-06-16
Date de publication 2021-12-23
Propriétaire HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japon)
Inventeur(s)
  • Toyoda Hiroyuki
  • Maita Hiroshi
  • Kawamura Hironobu
  • Sekiya Sachio

Abrégé

Provided is an air conditioner capable of outside air defrosting operation with outside air and maintenance of heating capacity even if the temperature of the outside air is lower than the freezing point.　In the defrosting operation mode in the heating operation, outdoor blower fans (22, 23) blow air to both of divided heat exchangers (20, 21). Furthermore, if the temperature of outdoor air is lower than the freezing point, an expansion valve (15, 16) connected to one of the divided heat exchangers (20, 21) is fully closed, and only in the heat exchanger with the expansion valve fully closed, defrosting is performed by sublimation action by outdoor air. This enables defrosting using outdoor air while continuing the heating operation even if the temperature of the outdoor air is lower than the freezing point.

Classes IPC  ?