Heat exchange assembly, air conditioner outdoor unit and air conditioner

The utility model provides a heat exchange assembly, an air conditioner outdoor unit and an air conditioner. The heat exchange assembly comprises a liquid tank provided with a first port, a second port, a fifth port and a sixth port; and the internal heat exchanger is arranged in the liquid tank, a first port of the internal heat exchanger is communicated with the outside of the liquid tank through a fifth port, and a second port of the internal heat exchanger is communicated with the outside of the liquid tank through a sixth port. The heat exchange assembly is applied to the air conditioner, a refrigerant in a liquid tank is low-temperature and low-pressure condensate water, an internal heat exchanger communicates with an indoor heat exchanger through a fifth port and a sixth port to form a circulating flow path, and circulating liquid contained in the circulating flow path circularly flows along the circulating flow path; the internal heat exchanger exchanges heat with low-temperature and low-pressure condensate water in the liquid tank, heat is transferred to the low-temperature and low-pressure condensate water in the liquid tank, and circulating liquid in the circulating flow path exchanges heat with indoor air through the indoor heat exchanger, so that the indoor air is cooled.