Air conditioning system

An air conditioning system, having a defrosting mode, a cooling mode, and a heating mode, the air conditioning system comprising:

• a compressor, comprising a suction port and a discharge port;
• an indoor heat exchanger, a first end of the indoor heat exchanger being communicated with one of the suction port and the discharge port;
• an outdoor unit, comprising:
• a housing, wherein a cavity is defined within the housing;
• an outdoor heat exchanger assembly, comprising a first part and a second part;
• a partition plate, disposed within the cavity and partitioning the cavity into a first space and a second space independent of each other;
• a first fan, located in the first space with the first part, the first fan being configured to increase an airflow velocity near the first part;
• a second fan, located in the second space with the second part, the second fan being configured to increase an airflow velocity near the second part;
• and
• a defrost pipeline, communicated with the discharge port;
• wherein, the defrosting mode comprises a first defrosting mode and a second defrosting mode;
• in a case where the air conditioning system operates in the first defrosting mode, the defrost pipeline is configured to transmit a refrigerant discharged from the discharge port to one of the first part and the second part;
• in a case where the air conditioning system operates in the second defrosting mode, the defrost pipeline is configured to transmit the refrigerant discharged from the discharge port to the other of the first part and the second part;
• wherein, in a case where the air conditioning system operates in the first defrosting mode to defrost the first part, the first fan stops operating, and the second fan operates normally, so that high-temperature and high-pressure gaseous refrigerant discharged from the discharge port is transmitted to the first part, and a refrigerant cycle is performed between the second part and the indoor heat exchanger to heat indoor air;
• in a case where the air conditioning system operates in the second defrosting mode to defrost the second part, the second fan stops operating, and the first fan operates normally, so that the high-temperature and high-pressure gaseous refrigerant discharged from the discharge port is transmitted to the second part for condensation and heat release, the condensed refrigerant is then transmitted to the first part for evaporation and heat absorption, and then returns to the compressor, and the refrigerant cycle is performed between the first part and the indoor heat exchanger to heat indoor air.