Air-conditioning device

An air-conditioning device comprising:

• a heating cycle configured to circulate heating medium through a heater core, the heater core being configured to heat blown air;
• an auxiliary heating device configured to heat the heating medium by an electric heater;
• a refrigeration cycle configured to circulate cooling medium discharged from a compressor through a condenser, the condenser being configured to heat the heating medium;
• refrigeration cycle control means configured to operate the refrigeration cycle such that temperature of the heating medium reaches target heating-medium temperature;
• an auxiliary heating device control means configured to operate the auxiliary heating device such that the temperature of the heating medium reaches the target heating-medium temperature;
• switching means configured to stop the operation of the refrigeration cycle in a state in which the temperature of the heating medium is equal to or higher than a threshold value;
• target-heating-medium-temperature calculating means configured to calculate the target heating-medium temperature based on target blowout temperature of blown air, the target blowout temperature being set based on operating condition;
• and
• target-cooling-medium-temperature calculating means configured to calculate target cooling medium temperature based on the target heating-medium temperature, wherein
• the refrigeration cycle control means is configured to control the operation of the refrigeration cycle such that temperature of the cooling medium discharged from the compressor approaches the target cooling medium temperature, and
• the auxiliary heating device control means is configured to control the operation of the auxiliary heating device such that the temperature of the heating medium approaches the target heating-medium temperature.