Temperature regulating device

A temperature regulating device for regulating a temperature of a temperature regulation target, the temperature regulating device comprising:

• a refrigeration cycle including a compressor configured to compress a refrigerant, a refrigerant radiator configured to radiate heat from the refrigerant flowing out of the compressor, an expansion valve configured to decompress the refrigerant flowing out of the refrigerant radiator, and an evaporator configured to evaporate the refrigerant flowing out of the expansion valve and to cause the refrigerant to flow to the compressor;
• and
• a heat medium circuit that includes a heat exchange portion, a heat medium radiator, and a flow rate adjustment mechanism, and in which a heat medium circulates while flowing through the refrigerant radiator and at least one of the heat exchange portion or the heat medium radiator, wherein
• the flow rate adjustment mechanism adjusts a flow rate ratio between a flow rate of the heat medium flowing through the heat exchange portion and a flow rate of the heat medium flowing through the heat medium radiator,
• the evaporator exchanges heat between the refrigerant and ventilation air blown to the space to be air conditioned, to evaporate the refrigerant and cool the ventilation air,
• the refrigerant radiator exchanges heat between the heat medium and the refrigerant, to heat the heat medium,
• the heat medium radiator radiates heat from the heat medium, and
• the heat exchange portion exchanges heat between the temperature regulation target and the heat medium, to heat the temperature regulation target.