초록 ▼

A main evaporator cools a driver's compartment of a vehicle while a cooling storage evaporator cools cooling storage packs that are used in cooling a sleeping compartment. Refrigerant is supplied to the main evaporator at the actuation of a first solenoid valve while refrigerant is supplied to the c

A main evaporator cools a driver's compartment of a vehicle while a cooling storage evaporator cools cooling storage packs that are used in cooling a sleeping compartment. Refrigerant is supplied to the main evaporator at the actuation of a first solenoid valve while refrigerant is supplied to the cooling storage evaporator at the actuation of a second solenoid valve. If a first switch is being actuated after the completion of the cooling storage operation of the cooling storage evaporator on the cooling storage packs and the temperature of the cooling storage packs is no more than a preset temperature, for example, -5.degree. C., FIR control is performed for alternately actuating the first solenoid valve and the second solenoid valve based on a predetermined time ratio (for example, 10 minutes 15 seconds).

대표청구항 ▼

[ What is claimed is:] [1.] A vehicular air conditioning apparatus for use in a vehicle, said apparatus comprising:a refrigerating cycle which includes a first evaporator unit that is capable of cooling a cabin of a vehicle and a second evaporator unit that is capable of cooling a cooling target, sa

[ What is claimed is:] [1.] A vehicular air conditioning apparatus for use in a vehicle, said apparatus comprising:a refrigerating cycle which includes a first evaporator unit that is capable of cooling a cabin of a vehicle and a second evaporator unit that is capable of cooling a cooling target, said second evaporator unit being disposed in parallel with said first evaporator unit;cooling operation completion determination means for determining that said second evaporator unit has completed cooling said cooling target;refrigerant supply control means for selectively supplying refrigerant to said first evaporator unit and to said second evaporator unit, said refrigerant supply control means being for supplying a smaller amount of refrigerant to said second evaporator unit compared to a refrigerant amount supplied thereto before said second evaporator unit has completed cooling said cooling target even after said cooling operation completion determination means determines that said second evaporator unit has completed cooling said cooling target;a first switch which actuates said first evaporator unit; anda second switch which actuates said second evaporator unit, wherein:said refrigerant supply control means alternately supplies refrigerant to said first evaporator unit and said second evaporator unit based on a predetermined first time ratio when both of said first switch and said second switch are being actuated and unless said cooling operation completion determination means determines that said second evaporator unit has completed cooling said cooling target;said first ratio indicates a first time period for supplying refrigerant to said first evaporator unit and a second time period for supplying refrigerant to said second evaporator unit;said refrigerant supply control means alternately supplies refrigerant to said first evaporator unit and said second evaporator unit based on a predetermined second time ratio after said cooling operation completion determination means determines that said second evaporator unit has completed cooling said cooling target; andsaid second time ratio indicates a third time period for supplying refrigerant to said first evaporator unit and a fourth time period for supplying refrigerant to said second evaporator unit, a ratio of said third time period with said fourth time period being greater than a ratio of said first time period with said second time period in said first time ratio, said second time ratio being used to relatively decrease refrigerant flow to said second evaporator.