Air supply control method and device of air conditioner, air conditioner and storage medium

The invention relates to the technical field of air conditioners, and discloses an air supply control method and device of an air conditioner, the air conditioner and a storage medium. The method comprises the steps that when the air conditioner is in a running state, a phase separator of the air conditioner is controlled to separate a gaseous refrigerant and a liquid refrigerant generated in the evaporation heat exchange process, and when the current mode of the air conditioner is the heating mode, the current environment temperature is obtained, and when the current environment temperature is smaller than or equal to the preset temperature threshold value, the phase separator is controlled to convey the separated gaseous refrigerant to the air return opening of the compressor through the gaseous refrigerant outlet, so that the air conditioner can be heated without increasing the cost greatly. And on the premise that the liquid refrigerant is prevented from returning to the compressor to cause liquid compres