A refrigeration cycle device comprising: a main refrigerant circuit formed by sequentially connecting, to one another through a pipe, a compressing mechanism composed of a compression rotating element, a usage-side heat exchanger for heating usage-side heat medium by refrigerant which is discharged from the compression rotating element, an intermediate heat exchanger, a first expanding device and a heat source-side heat exchanger; a bypass refrigerant circuit in which refrigerant which branches off from the pipe between the usage-side heat exchanger and the first expanding device is decompressed by the second expanding device and thereafter, heat of the refrigerant is exchanged with that of the refrigerant which flows through the main refrigerant circuit by the intermediate heat exchanger, and the refrigerant joins up with the refrigerant which is in middle of a compression operation of the compression rotating element; discharge temperature detecting means for detecting discharge temperature of the compression rotating element; discharge pressure detecting means for detecting discharge pressure of the compression rotating element; and a control device, wherein a predetermined temperature is preset as a value which is lower, by a first predetermined value, than a value of discharge temperature that is the upper limit of the operating range of the refrigeration cycle device, and a predetermined pressure is preset as a value which is lower, by a second predetermined value, than a value of discharge pressure that is the upper limit of the operating range of the refrigeration cycle device, characterized in that when the discharge pressure of the compression rotating element is higher than the predetermined pressure and the discharge temperature of the compression rotating element is higher than the predetermined temperature, the control device is configured to increase the opening degrees of both the first expanding device and the second expanding device. a main refrigerant circuit formed by sequentially connecting, to one another through a pipe, a compressing mechanism composed of a compression rotating element, a usage-side heat exchanger for heating usage-side heat medium by refrigerant which is discharged from the compression rotating element, an intermediate heat exchanger, a first expanding device and a heat source-side heat exchanger; a bypass refrigerant circuit in which refrigerant which branches off from the pipe between the usage-side heat exchanger and the first expanding device is decompressed by the second expanding device and thereafter, heat of the refrigerant is exchanged with that of the refrigerant which flows through the main refrigerant circuit by the intermediate heat exchanger, and the refrigerant joins up with the refrigerant which is in middle of a compression operation of the compression rotating element; discharge temperature detecting means for detecting discharge temperature of the compression rotating element; discharge pressure detecting means for detecting discharge pressure of the compression rotating element; and a control device, wherein a predetermined temperature is preset as a value which is lower, by a first predetermined value, than a value of discharge temperature that is the upper limit of the operating range of the refrigeration cycle device, and a predetermined pressure is preset as a value which is lower, by a second predetermined value, than a value of discharge pressure that is the upper limit of the operating range of the refrigeration cycle device, characterized in that when the discharge pressure of the compression rotating element is higher than the predetermined pressure and the discharge temperature of the compression rotating element is higher than the predetermined temperature, the control device is configured to increase the opening degrees of both the first expanding device and the second expanding device.