Refrigeration cycle device

A refrigeration cycle device comprising:

• a compressor that compresses and discharges a refrigerant;
• a radiator that dissipates heat from the refrigerant;
• a decompression device that decompresses the refrigerant;
• an evaporator that evaporates the refrigerant;
• and
• a heat storage member provided in a refrigerant flow passage through which the refrigerant circulates, the heat storage member being made of a strongly correlated electron-based solid material that stores or dissipates heat by undergoing a phase transition between a metal and an insulator, the heat storage member having a plurality of holes extending from an inlet side to an outlet side of the heat storage member, and the heat storage member being configured to store and dissipate heat by the strongly correlated electron-based material directly contacting the refrigerant circulating through the plurality of holes extending from the inlet side to the outlet side of the heat storage member, wherein
• during a normal operation, the heat storage member stores heat contained in high-pressure refrigerant that circulates through the refrigerant flow passage from a discharge side of the compressor, and
• during a defrosting operation, the heat storage member dissipates heat into the refrigerant that circulates through the refrigerant flow passage leading to the evaporator and to heat and remove frost formed on the evaporator.