Refrigeration cycle apparatus

A refrigeration cycle apparatus comprising:

• a refrigeration cycle main unit including a compressor, a condenser, an evaporator, and refrigerant flow means for connecting the above components to form a closed circuit through which a refrigerant flows;
• a heat accumulating unit for accumulating an excess heat generated during the operation of said main unit and for radiating the accumulated heat at a desired time to heat the refrigerant to be sent to the compressor, said accumulating unit including a heat accumulating container and latent heat accumulating material accommodated in the container, said heat accumulating material having a predetermined phase transition temperature, and a supercooling state release temperature which is lower than the phase transition temperature, said heat accumulating material maintaining a supercooling state at a temperature between said phase transition temperature and said supercooling state release temperature;
• and
• release means for releasing the supercooling state of the heat accumulating material to cause the heat accumulating material to radiate latent heat.