公开(公告)号：EP3879192A1

公开(公告)日：2021-09-15

申请号：EP19920963.6

申请日：2019-09-30

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： HU, Kuanhong ,  WANG, Mei ,  LIANG, Yigeng ,  HUANG, Jinlun ,  JIN, Haiyuan ,  WANG, Chaoxin ,  CHEN, Shengwen

IPC分类号： F24F1/0035 ,  F24F13/02 ,  F24F1/0087 ,  F24F13/22 ,  F24F1/42

摘要： The present application provides an air conditioner cleaning device, including a fresh air device (1). The fresh air device (1) is capable of introducing fresh air into a room, and is capable of supplying air to the heat exchanger. The present application can be used for self-cleaning of an outdoor heat exchanger, with high cleaning efficiency and good cleaning effect. The fresh air device has a dual-passage selective air-introduction, making full use of the temperature difference between the indoor air and the outdoor air, speeding up the frosting and defrosting processes, and improving the self-cleaning efficiency of the air conditioner. The humidification and cooling of the frosting airflow and the heating of the defrosting airflow are realized on the basis of the fresh air device, which can speed up the frosting and defrosting processes and improve the self-cleaning efficiency of the air conditioner. It can be used for self-cleaning of both the indoor heat exchanger and the outdoor heat exchanger, so the functions are completed.

公开(公告)号：EP3534080A1

公开(公告)日：2019-09-04

申请号：EP17863765.8

申请日：2017-09-25

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： WANG, Mei ,  LIANG, Yigeng ,  YE, Wuzhan ,  JIN, Haiyuan

IPC分类号： F24F11/00

摘要： An air conditioner, and a device and method for preventing cold air during heating of the air conditioner are provided. The method includes: after heating is started, detecting an indoor ambient temperature and an outdoor ambient temperature respectively to determine a general temperature range within which the indoor ambient temperature and the outdoor ambient temperature are located (S110); determining whether an evaporator inner-tube temperature satisfies an evaporator inner-tube temperature condition required for entering a cold air prevention mode, or determining whether a duration, for which a compressor and a four-way valve operate, reaches an operating duration required for entering the cold air prevention mode, or determining whether a current intensity continuously reaches a first preset current intensity threshold for a predetermined duration (S120); when any one of determining results is yes, starting an inner blower fan at a first preset wind speed (S130); determining whether the evaporator inner-tube temperature satisfies the evaporator inner-tube temperature condition required for exiting the cold air prevention mode, or determining whether the current intensity continuously reaches a second preset current intensity threshold for a predetermined duration, or determining whether a duration, for which the inner blower fan operates at the first preset wind speed, reaches a first preset duration (S140); and if so, switching the inner blower fan to operate at a second preset wind speed (S150).