| abstract |
The invention provides a refrigerating machine oil composition by which a capillary tube is hardly clogged when a hydrofluorocarbon type, a hydrocarbon type, an ether type, a carbon dioxide type or an ammonia type is used as a refrigerant, It is a refrigerating machine oil composition in which base oil containing at least one polyol ester is mixed with 1 to 20 % by weight based o the total amount of the composition, of a specific polyalkylene glycol alkyl ether. |