Patent ID: 8822395

Claim:
A compressor containing a refrigerating machine oil comprising: a base oil made of a polyoxyalkylene glycol having a kinematic viscosity of from 3 to 50 mm 2 /s as measured at 100° C., and at least one compound selected from the group consisting of a compound of formula (1) and a compound of formula (2) which is contained in an amount of from 0.01 to 1% by mass on the basis of a total amount of the refrigerating machine oil; wherein compounds of formulas (1) and (2) are described below: R 1 —CO—NR 2 R 3 (1), wherein R 1 is an alkyl group having 6 to 30 carbon atoms or an alkenyl group having 6 to 30 carbon atoms; and R 2 and R 3 are each independently a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms, a nitrogen-containing hydrocarbon group having 1 to 10 carbon atoms or an oxygen-containing hydrocarbon group having 1 to 10 carbon atoms; and R 4 —CO—NR 5 —R 6 —COO—X (2) wherein R 4 is an alkyl group having 6 to 30 carbon atoms or an alkenyl group having 6 to 30 carbon atoms; R 5 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 6 is an alkylene group having 1 to 8 carbon atoms; and X is a hydrogen atom, an alkali metal atom, a hydrocarbon group having 1 to 30 carbon atoms, a nitrogen-containing hydrocarbon group having 1 to 30 carbon atoms or an oxygen-containing hydrocarbon group having 1 to 30 carbon atoms; wherein a sliding surface of at least part of constitutional member(s) of the compressor is coated with a lubrication film containing a nitrogen-containing resin as a binder and a solid lubricant.