| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for controlling operation of a vehicular air-conditioning apparatus which can ensure dehumidification capability upon medium heat loading in which an open air temperature becomes higher when dehumidification heating operation is performed as well. <P>SOLUTION: At a dehumidification heating operating mode, when a heat load does not exceed a given value, a refrigerant discharged from a compressor 6 is circulated in the order of a first heat exchanger 2, a first refrigerant control part 9, an out-of-compartment heat exchanger 4, a fourth refrigerant control part 22, and the compressor 6, and also the refrigerant is circulated in the order of the first heat exchanger 2, a third refrigerant control part 16, a second heat exchanger 3, and the compressor 6. When it is determined that the heat load exceeds the given value, the refrigerant discharged from the compressor 6 is circulated in the order of the first heat exchanger 2, the first refrigerant control part 9, the out-of-compartment heat exchanger 4, a second refrigerant control part 13, the second heat exchanger 3, and the compressor 6, and also the refrigerant is circulated in the order of the first heat exchanger 2, the third refrigerant control part 16, the second heat exchanger 3, and the compressor 6. <P>COPYRIGHT: (C)2013,JPO&INPIT |
