To prevent generation of wax-like solid material causing clogging of a refrigerating circuit and degradation of refrigerating performance, in the refrigerant circuit wherein a scroll compressor is used as a compressor, an unsaturated fluorinated hydrocarbon refrigerant is used as a refrigerant, and an ether lubricant such as polyalkylene glycol is used as refrigerating machine oil.
A lubricant type component not having a polyoxyalkylene structure such as ester lubricant, alcohol friction modifier, olefin friction modifier, polyolefin lubricant, alkyl aromatic lubricant, and silicone lubricant, or a metal deactivation agent such as benzotriazole is added to the ether lubricant such as polyalkylene glycol, to prevent generation of the wax-like solid material in the refrigerating circuit.
| JPS60175973 | HEAT PUMP TYPE FLOOR HEATING APPARATUS |
| WO/2023/047863 | HEAT PUMP–TYPE TEMPERATURE CONTROL DEVICE |
MATSUZAKI TOMOAKI
MATSUMOTO YUICHI
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