| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerator capable of restricting deterioration of refrigeration oil and corrosion of an expansion valve.SOLUTION: A refrigerator 1 comprises a compressor 2, condensers 4, 6, an expansion mechanism 5 and vaporizers 6, 4. The refrigerator 1 uses refrigerant including R32 and refrigerator oil for use in lubrication of the compressor 2. The refrigerator oil contains acid scavenger with added amount of 1.0 wt% to 5.0 wt%. An amount of air mixed into the refrigerator 1 is controlled to 500 ppm or less in regard to an amount of charged refrigerant. Moisture content mixed into the refrigerator 1 is controlled to 300 ppm or less in regard to the amount of charged refrigerant. A temperature of discharged gas from the refrigerator 1 is controlled to 120°C or less.SELECTED DRAWING: Figure 1 |
