| 摘要 |
There is provided a highly reliable rotary compressor which uses polyalkylene glycol as a lubricant or polyalfa olefin as base oil in a compressor utilizing as a refrigerant carbon dioxide which is a natural refrigerant, and prevents abnormal abrasion of a roller and a vane. In a rotary compressor which uses carbonic acid gas as a refrigerant, polyalkylene glycol (determined as a formal nomenclature) as a lubricant, or polyalfa olefin or mineral oil as base oil, there is used a vane whose radius of curvature (Rv) (cm) at a sliding contact portion with respect to said roller can be represented by the following expression (1):<paragraph lvl="0"><in-line-formula>T<Rv<Rr Expression (1)</in-line-formula>[where T is a thickness (cm) of the vane, Rr is a radius of curvature (cm) of an outer periphery of the roller which slidingly comes into contact with the vane] |
