Patent ID: 11964537
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. A vehicle air conditioning device, comprising:
an air conditioning cycle configured to compress and expand a refrigerant, the air conditioning cycle comprising:
a compressor configured to compress the refrigerant;
an exterior heat exchanger through which the refrigerant circulates;
an interior heat exchanger through which the refrigerant circulates; and
an expansion valve configured to expand the compressed refrigerant;

a heater core through which a second refrigerant circulates, the heater core being configured to heat air that is to be supplied to a vehicle cabin;
a high pressure side pressure sensor configured to detect a pressure on the high pressure side of the air conditioning cycle; and
a heater core inlet refrigerant temperature sensor configured to detect a temperature of the second refrigerant at an inlet of the heater core as a heater core inlet refrigerant temperature; and
an outside air temperature sensor configured to detect an outside air temperature,
wherein an estimated outside air temperature is calculated based on the high pressure side pressure of the air conditioning cycle detected by the high pressure side pressure sensor and the heater core inlet refrigerant temperature detected by the heater core inlet refrigerant temperature sensor,
wherein, when an outside air temperature is updated with the outside air temperature detected by the outside air temperature sensor every predetermined period of time, a temperature or a flow rate of air that is to be blown into the vehicle cabin is adjusted based on the updated outside air temperature, and
wherein, when the outside air temperature is not updated with the outside air temperature detected by the outside air temperature sensor and a vehicle traveling speed is lower than a predetermined threshold value, the temperature or the flow rate of air that is to be blown into the vehicle cabin is adjusted based on the calculated estimated outside air temperature.