Refrigeration cycle device

A refrigeration cycle device comprising:

• a compressor configured to draw and discharge a refrigerant;
• a first heat exchanger in which the refrigerant discharged from the compressor exchanges heat with a high temperature heat medium to radiate heat to the high temperature heat medium;
• a decompression valve configured to decompress the refrigerant flowing out from the radiator;
• a second heat exchanger configured to exchange heat between the refrigerant decompressed in the decompression valve and a low temperature heat medium;
• a high-temperature heat medium circuit in which the high temperature heat medium circulates through the first heat exchanger;
• a heat supply target arranged in the high-temperature heat medium circuit to be supplied with heat from the high temperature heat medium;
• a low-temperature heat medium circuit in which the low temperature heat medium circulates through the second heat exchanger;
• a heat transfer heat exchanger configured to transfer heat from the high-temperature heat medium circuit to the low-temperature heat medium circuit;
• a flow adjustment valve configured to adjust a flow ratio of a flow rate of the high temperature heat medium flowing in the heat transfer heat exchanger to a flow rate of the high temperature heat medium circulating in the high-temperature heat medium circuit;
• and
• a controller including at least one of a circuit and a processor having a memory storing computer program code, wherein the at least one of the circuit and the processor having the memory is configured to control the flow adjustment valve to cause the flow ratio to increase, as a density of the refrigerant, an amount of heat possessed by the high temperature heat medium, or an amount of heat possessed by the low temperature heat medium decreases.