In-vehicle air conditioning device

An in-vehicle air conditioning device comprising:

• a refrigerant circuit including a compressor, a condenser for heat dissipation, an expansion valve, and an evaporator for heat absorption, the refrigerant circuit being configured such that a hydrocarbon-based refrigerant circulates in the refrigerant circuit;
• a first cooling liquid circuit including a radiator, the first cooling liquid circuit being configured such that a cooling liquid heated by the condenser of the refrigerant circuit circulates in the first cooling liquid circuit;
• a second cooling liquid circuit including a cooler core configured to cool an air conditioning airflow, the second cooling liquid circuit being configured such that the cooling liquid cooled by the evaporator of the refrigerant circuit circulates in the second cooling liquid circuit;
• a housing covering the refrigerant circuit;
• a gas sensor disposed inside the housing, the gas sensor being configured to detect a gas concentration of the refrigerant outside the refrigerant circuit;
• and
• a controller configured to control the compressor,
• wherein the controller is configured to, when the controller receives a command to activate the compressor, avoid activation of the compressor when the gas concentration detected by the gas sensor is higher than a predetermined concentration.