| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle air conditioner ensuring a desired function of a cold storage internal heat exchanger formed by integrating an internal heat exchanger and a cold storage heat exchanger, and also achieving compactness of the cold storage internal heat exchanger itself. SOLUTION: The vehicle air conditioner includes a refrigerant circuit with a compressor, a condenser, a decompressor, and an evaporator. The vehicle air conditioner further includes the cold storage internal heat exchanger including a high-pressure refrigerant passage and a low-pressure refrigerant passage and a cold storage material storing section. The cold storage internal heat exchanger has an internal heat exchange function, and cools the cold storage material by low-pressure refrigerant of the low-pressure refrigerant passage during driving of the compressor, and cools the low-pressure refrigerant of the low-pressure refrigerant passage by the cooled cold storage material during stop of the compressor. The high-pressure refrigerant passage of the cold storage internal heat exchanger includes a first internal high-pressure refrigerant passage on the upstream side, and a second internal high-pressure refrigerant passage on the downstream side. The most downstream part of the first internal high-pressure refrigerant passage is provided with a high-pressure liquid refrigerant collection part that collects liquid refrigerant in the high-pressure refrigerant admitted to the second internal high-pressure refrigerant passage. COPYRIGHT: (C)2011,JPO&INPIT |
