Registre Brevet WIPO
Numéro d'application JP2018037442
Numéro de publication 2020/070890
Statut Délivré - en vigueur
Date de dépôt 2018-10-05
Date de publication 2020-04-09
  • Takeuchi Shinji
  • Tokita Satomi


An air conditioner (100) is provided with: a refrigeration cycle (RC) that has a compressor (32) and an indoor heat exchanger (64); a drain pan (140) that temporarily stores water stuck to the indoor heat exchanger and water falling as drain water; a drain pump (PO) that discharges the drain water stored in the drain pan to the outside; and a control device (20) that controls the operations of the refrigeration cycle and the drain pump. The control device carries out a freezing operation for causing the indoor heat exchanger to function as an evaporator and for setting the surface temperature of the indoor heat exchanger below freezing point, and drives the drain pump so as to satisfy the relationship of "driving time of drain pump after end of normal cooling operation < driving time of drain pump after freezing operation".

Classes IPC  ?

  • 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
  • F24F 11/43 - Defrosting; Preventing freezing of indoor units
  • F24F 13/22 - Means for preventing condensation or evacuating condensate