| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular air-conditioning device capable of delivering high performance.SOLUTION: A vehicular air-conditioning device 1A comprises: a main circuit 2; a first communication passage 3; and a second communication passage 4. In the main circuit 2, a compressor 10, an indoor condenser 11, a first expansion valve 14 (a first expansion mechanism), an outdoor heat exchanger 13, a second expansion valve 15 (a second expansion mechanism) and an indoor evaporator 12 are connected in this order. The first communication passage 3 has a first opening/closing valve 23 (a first valve). The second communication passage 4 has a second opening/closing valve 24 (a second valve). When performing heating operation (for example dehumidification heating operation), a cooling medium flowing out of the indoor condenser 11 flows through the indoor evaporator 12 and the outdoor heat exchanger 13 in parallel. When performing cooling operation and reheating dehumidification operation, the cooling medium flowing out of the indoor condenser 11 serially flows through the outdoor heat exchanger 13 and the indoor evaporator 12 in this order. |
