| 摘要 |
<p>A refrigeration device configured so as to be equipped with a refrigerant circulation path in which a refrigerant circulates from a compressor (120) and returns to the compressor (120) via a condenser (121), an expansion mechanism (122), and an evaporator (123), with a single refrigerant composed of a hydrofluoroolefin having a carbon double bond used as the working refrigerant, or a mixed refrigerant for which a hydrofluorocarbon having no double bonds is mixed in a hydrofluoroolefin used as the working refrigerant, and with a kinetic viscosity of 0.1 mm2/s - 100 mm2/s for the refrigerant oil when the compressor (120) is operating. Thus, it is possible to provide a refrigeration device with which the generation of polymer substances can be suppressed by preventing the occurrence of a high-pressure, high-temperature state which is a condition in which polymers are generated, thereby preventing deterioration and damage to mechanisms in the refrigeration device due to polymer substances, and with which reliability and high efficiency are ensured.</p> |
