Vehicle air-conditioning device

A vehicle-air conditioning device comprising:

• a compressor to compress a refrigerant;
• a radiator to let the refrigerant radiate heat, thereby heating air to be supplied to a vehicle interior;
• an outdoor heat exchanger provided outside the vehicle interior;
• a waste heat recovering heat exchanger to recover waste heat from a heat generating device mounted on a vehicle by using the refrigerant;
• an auxiliary heater to heat the air supplied to the vehicle interior;
• and
• a control device,
• wherein the control device at least lets the refrigerant discharged from the compressor radiate heat in the radiator, causes decompression of the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
• wherein the control device is capable of executing pre-air-conditioning for preliminarily heating the vehicle interior before boarding,
• wherein when the temperature of the heat generating device is higher than or equal to a predetermined specified value where the pre-air-conditioning is executed, the control device operates the compressor to let the refrigerant discharged from the compressor radiate heat in the radiator, causes decompression of the refrigerant from which the heat has been radiated, and then let the refrigerant absorb heat in the waste heat recovering heat exchanger without using the outdoor heat exchanger, thereby heating the vehicle interior, and
• wherein when the temperature of the heat generating device is lower than the specified value where the control device executes the pre-air-conditioning in the state in which the vehicle is connected to the external power source, the control device causes the auxiliary heater to generate heat without operating the compressor, thereby heating the vehicle interior.

A vehicle-air conditioning device comprising:

• a compressor to compress a refrigerant;
• a radiator to let the refrigerant radiate heat, thereby heating air to be supplied to a vehicle interior;
• an outdoor heat exchanger provided outside the vehicle interior;
• a waste heat recovering heat exchanger to recover waste heat from a heat generating device mounted on a vehicle by using the refrigerant;
• an auxiliary heater to heat the air supplied to the vehicle interior;
• and
• a control device,
• wherein the control device at least lets the refrigerant discharged from the compressor radiate heat in the radiator, causes decompression of the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
• wherein the control device is capable of executing pre-air-conditioning for preliminarily heating the vehicle interior before boarding,
• wherein when the temperature of the heat generating device is higher than or equal to a predetermined specified value where the pre-air-conditioning is executed, the control device operates the compressor to let the refrigerant discharged from the compressor radiate heat in the radiator, causes decompression of the refrigerant from which the heat has been radiated, and then let the refrigerant absorb heat in the waste heat recovering heat exchanger without using the outdoor heat exchanger, thereby heating the vehicle interior, and
• wherein when the heating capacity by the radiator is less than a target heating capacity where the control device executes the pre-air-conditioning in the state in which the vehicle is not connected to the external power source, the control device causes decompression of the refrigerant from which the heat has been radiated in the radiator and then lets the refrigerant absorb heat in the waste heat recovering heat exchanger, and causes the auxiliary heater to generate heat, thereby heating the vehicle interior.

A vehicle-air conditioning device comprising:

• a compressor to compress a refrigerant;
• a radiator to let the refrigerant radiate heat, thereby heating air to be supplied to a vehicle interior;
• an outdoor heat exchanger provided outside the vehicle interior;
• a waste heat recovering heat exchanger to recover waste heat from a heat generating device mounted on a vehicle by using the refrigerant;
• an auxiliary heater to heat the air supplied to the vehicle interior;
• and
• a control device,
• wherein the control device at least lets the refrigerant discharged from the compressor radiate heat in the radiator, causes decompression of the refrigerant from which the heat has been radiated, and then lets the refrigerant absorb heat in the outdoor heat exchanger to heat the vehicle interior,
• wherein the control device is capable of executing pre-air-conditioning for preliminarily heating the vehicle interior before boarding,
• wherein when the temperature of the heat generating device is higher than or equal to a predetermined specified value where the pre-air-conditioning is executed, the control device operates the compressor to let the refrigerant discharged from the compressor radiate heat in the radiator, causes decompression of the refrigerant from which the heat has been radiated, and then let the refrigerant absorb heat in the waste heat recovering heat exchanger without using the outdoor heat exchanger, thereby heating the vehicle interior, and
• wherein when the heating capacity by the radiator is less than a target heating capacity where the control device executes the pre-air-conditioning in the state in which the vehicle is not connected to the external power source, the control device causes decompression of the refrigerant from which the heat has been radiated in the radiator and then lets the refrigerant absorb heat in the outdoor heat exchanger and the waste heat recovering heat exchanger, thereby heating the vehicle interior.