HERMETIC ELECTROMOTIVE COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To improve durability of a hermetic electromotive compressor in an air conditioning system or a refrigerant system using an ammonia refrigerant. SOLUTION: This hermetic electromotive compressor uses refrigerating machine oil including an inclusion of sulfur of 0.01 wt.% or less and comprising hydrocarbon as a main component. Metal corrosion can be prevented by suppressing heat deterioration of ammonia and refrigerating machine oil.