Air-conditioning apparatus

An air-conditioning apparatus including a refrigerant circuit formed by connecting, with pipes,

• a compressor to compress refrigerant and discharge the compressed refrigerant,
• a first heat exchanger that exchanges heat with the refrigerant,
• a subcooling heat exchanger that includes a first flow passage and a second flow passage and exchanges heat between a portion of the refrigerant flowing in the first flow passage and another portion of the refrigerant flowing in the second flow passage to subcool the portion of refrigerant flowing in the first flow passage,
• a first expansion device to decompress the refrigerant,
• a second heat exchanger that exchanges heat with the refrigerant, and
• an accumulator connected to a suction side of the compressor and configured to store excess refrigerant,
• so that the refrigerant is circulated through the refrigerant circuit,
• the air-conditioning apparatus comprising:
• a first bypass pipe that connects the second flow passage of the subcooling heat exchanger with a segment of the pipes, the segment being positioned on a refrigerant inflow side of the accumulator;
• a second expansion device to adjust a flow rate of the refrigerant flowing in the first bypass pipe;
• a second bypass pipe that connects a segment of the pipes, the segment being positioned between the first heat exchanger and the second heat exchanger with a segment of the pipes, the segment being positioned between a refrigerant outflow side of the accumulator and the suction side of the compressor;
• and
• a third expansion device being an electronic expansion valve to adjust a flow rate of the refrigerant flowing in the second bypass pipe.