Vehicle air conditioning system

A vehicle air conditioning system for air conditioning a plurality of air conditioning zones set in an interior of a vehicle, the vehicle air conditioning system comprising:

• a plurality of air conditioners provided to respectively correspond to the plurality of air conditioning zones;
• and
• a cooler that cools a target equipment mounted on the vehicle, wherein
• each of the plurality of air conditioners includes vapor compression refrigeration cycle, and cools air blowing out to the plurality of air conditioning zones by an endothermic action due to evaporation of a refrigerant,
• the cooler includes a cooling circuit through which a heat medium for exchanging heat with the target equipment flows, and adjusts a temperature of the target equipment by cooling the heat medium utilizing the endothermic action in at least a part of the plurality of air conditioners,
• of the plurality of air conditioners, the air conditioner that air-conditions a door side zone separated from an outside by a door of the vehicle is a door side air conditioner and the air conditioner that air-conditions a panel side zone separated from the outside by a side panel of the vehicle is a panel side air conditioner, an amount of heat absorbed from the heat medium during an equipment temperature control, in which cooling of the interior and temperature control of the target equipment are respectively performed by the plurality of air conditioners, is smaller in the panel side air conditioner than in the door side air conditioner,
• the door side air conditioner includes a first interior evaporator that absorbs heat from air before blowing out to the door side zone to evaporate the refrigerant, and a first equipment evaporator that is provided in parallel to the first interior evaporator with respect to the flow of the refrigerant and absorbs heat from the heat medium to evaporate the refrigerant,
• the panel side air conditioner includes a second interior evaporator that absorbs heat from air before blowing out to the panel side zone to evaporate the refrigerant, and a second equipment evaporator that is provided in parallel to the second interior evaporator with respect to the flow of the refrigerant and absorbs heat from the heat medium to evaporate the refrigerant, and
• an amount of heat absorbed from the heat medium during the equipment temperature control is smaller in the second equipment evaporator than in the first equipment evaporator,
• the vehicle air conditioning system further comprising an air conditioning control unit that controls the door side air conditioner and the panel side air conditioner, wherein
• the door side air conditioner includes a door side switching unit that switches between a first permitted state of permitting a flow of the refrigerant to the first equipment evaporator and a first blocked state of blocking the flow of the refrigerant to the first equipment evaporator,
• the panel side air conditioner includes a panel side switching unit that switches between a second permitted state of permitting a flow of the refrigerant to the second equipment evaporator and a second blocked state of blocking the flow of the refrigerant to the second equipment evaporator, and
• the air conditioning control unit controls the door side switching unit and the panel side switching unit such that, during the equipment temperature control, a time during which the second permitted state is maintained is shorter than a time during which the first permitted state is maintained.

A vehicle air conditioning system for air conditioning a plurality of air conditioning zones set in an interior of a vehicle, the vehicle air conditioning system comprising:

• a plurality of air conditioners provided to respectively correspond to the plurality of air conditioning zones;
• and
• a cooler that cools a target equipment mounted on the vehicle, wherein
• each of the plurality of air conditioners includes vapor compression refrigeration cycle, and cools air blowing out to the plurality of air conditioning zones by an endothermic action due to evaporation of a refrigerant,
• the cooler includes a cooling circuit through which a heat medium for exchanging heat with the target equipment flows, and adjusts a temperature of the target equipment by cooling the heat medium utilizing the endothermic action in at least a part of the plurality of air conditioners,
• of the plurality of air conditioners, the air conditioner that air-conditions a door side zone separated from an outside by a door of the vehicle is a door side air conditioner and the air conditioner that air-conditions a panel side zone separated from the outside by a side panel of the vehicle is a panel side air conditioner, an amount of heat absorbed from the heat medium during an equipment temperature control, in which cooling of the interior and temperature control of the target equipment are respectively performed by the plurality of air conditioners, is smaller in the panel side air conditioner than in the door side air conditioner,
• the door side air conditioner includes a first interior evaporator that absorbs heat from air before blowing out to the door side zone to evaporate the refrigerant, and a first equipment evaporator that is provided in parallel to the first interior evaporator with respect to the flow of the refrigerant and absorbs heat from the heat medium to evaporate the refrigerant,
• the panel side air conditioner includes a second interior evaporator that absorbs heat from air before blowing out to the panel side zone to evaporate the refrigerant, and a second equipment evaporator that is provided in parallel to the second interior evaporator with respect to the flow of the refrigerant and absorbs heat from the heat medium to evaporate the refrigerant,
• an amount of heat absorbed from the heat medium during the equipment temperature control is smaller in the second equipment evaporator than in the first equipment evaporator,
• the first equipment evaporator and the second equipment evaporator are disposed, in the cooling circuit, in series with respect to a flow of heat medium, and
• the second equipment evaporator is disposed, in the cooling circuit, on a downstream side, in the flow of heat medium, of the first equipment evaporator such that the heat medium having passed through the first equipment evaporator flows into the second equipment evaporator.

A vehicle air conditioning system for air conditioning a plurality of air conditioning zones set in an interior of a vehicle, the vehicle air conditioning system comprising:

• a plurality of air conditioners provided to respectively correspond to the plurality of air conditioning zones;
• and
• a cooler that cools a target equipment mounted on the vehicle, wherein
• each of the plurality of air conditioners includes vapor compression refrigeration cycle, and cools air blowing out to the plurality of air conditioning zones by an endothermic action due to evaporation of a refrigerant,
• the cooler includes a cooling circuit through which a heat medium for exchanging heat with the target equipment flows, and adjusts a temperature of the target equipment by cooling the heat medium utilizing the endothermic action in at least a part of the plurality of air conditioners,
• of the plurality of air conditioners, the air conditioner that air-conditions a door side zone separated from an outside by a door of the vehicle is a door side air conditioner and the air conditioner that air-conditions a panel side zone separated from the outside by a side panel of the vehicle is a panel side air conditioner, an amount of heat absorbed from the heat medium during an equipment temperature control, in which cooling of the interior and temperature control of the target equipment are respectively performed by the plurality of air conditioners, is smaller in the panel side air conditioner than in the door side air conditioner,
• the door side air conditioner includes a first interior evaporator that absorbs heat from air before blowing out to the door side zone to evaporate the refrigerant, and a first equipment evaporator that is provided in parallel to the first interior evaporator with respect to the flow of the refrigerant and absorbs heat from the heat medium to evaporate the refrigerant,
• the panel side air conditioner includes a second interior evaporator that absorbs heat from air before blowing out to the panel side zone to evaporate the refrigerant, and a second equipment evaporator that is provided in parallel to the second interior evaporator with respect to the flow of the refrigerant and absorbs heat from the heat medium to evaporate the refrigerant,
• an amount of heat absorbed from the heat medium during the equipment temperature control is smaller in the second equipment evaporator than in the first equipment evaporator,
• a first merge place is a merge place where the refrigerant having passed through the first interior evaporator and the refrigerant having passed through the first equipment evaporator are merged, and a second merge place is a merge place where the refrigerant having passed through the second interior evaporator and the refrigerant having passed through the second equipment evaporator are merged, and
• a second pressure loss ratio, which is a ratio of a pressure loss from a refrigerant inlet side of the second equipment evaporator to the second merge place to a pressure loss from a refrigerant inlet side of the second interior evaporator to the second merge place, is larger than a first pressure loss ratio, which is a ratio of a pressure loss from a refrigerant inlet side of the first equipment evaporator to the first merge place to a pressure loss from a refrigerant inlet side of the first interior evaporator to the first merge place.