Air-conditioning device, control method and device, and computer-readable storage medium

A control method applicable to an air-conditioning apparatus,

• the air-conditioning apparatus comprising:
• compressor;
• a four-way valve connected to the compressor through a first refrigerant branch;
• a first control valve arranged on the first refrigerant branch;
• an indoor heat exchanger connected to the four-way valve;
• an outdoor heat exchanger connected to the four-way valve;
• a second refrigerant branch connected in parallel to the first refrigerant branch;
• a second control valve and a hot-air bypass pipe located at the bottom of the outdoor heat exchanger, wherein the second control valve and the hot-air bypass pipe are arranged on the second refrigerant branch;
• and
• a flash evaporator, having a first refrigerant port connected to the outdoor heat exchanger, a second refrigerant port connected to the indoor heat exchanger, and an air outlet connected to the compressor,
• the control method comprising:
• controlling the first control valve and the second control valve respectively in response to an operating mode of the air-conditioning apparatus, to adjust heat supply for the hot-air bypass pipe.