To provide a vapor compression type refrigerating cycle of an air conditioner for automobiles capable of regulating the heat exchange amount of an intercooler and simplifying the refrigerating circuit of the refrigerating cycle while preventing the transient rise of the high pressure side pressure of refrigerant.

In this vapor compression type refrigerating cycle of the air conditioner for automobiles utilizing a supercritical cycle, the refrigerant is circulated in a closed circuit having a compressor 1, a radiator 3, the intercooler 4, a first expansion valve 105a, and an evaporator connected to each other through pipes, and the direction for circulating the refrigerant is changed over by a four-way selector valve 2. An intercooler bypass circuit 108 is installed between the radiator 3 and the evaporator 6 in parallel with the intercooler 4 and the first expansion valve 105a. A second expansion valve 105b for decompressing the refrigerant is installed in the intercooler bypass circuit 108.