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A rotary compressor uses a freon without containing chlorine ions and uses polyol ester as a lubricant or plyvinyl ether as a base oil for providing a highly reliable rotary compressor, and for preventing abnormal abrasion. The rotary compressor has a roller and a vane sliding contact with an outer

A rotary compressor uses a freon without containing chlorine ions and uses polyol ester as a lubricant or plyvinyl ether as a base oil for providing a highly reliable rotary compressor, and for preventing abnormal abrasion. The rotary compressor has a roller and a vane sliding contact with an outer cirumference of the roller. A sliding contact portion between the vane and the roller is formed with a radius of curvature Rv, and satisfies T

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1. A rotary compressor, coupled to a freon loop connecting in turn to the rotary compressor, a condenser, an expansion device and an evaporator, the rotary compressor using a freon without containing chlorine ions and using polyol ester as a lubricant or plyvinyl ether as a base oil, the rotary comp

1. A rotary compressor, coupled to a freon loop connecting in turn to the rotary compressor, a condenser, an expansion device and an evaporator, the rotary compressor using a freon without containing chlorine ions and using polyol ester as a lubricant or plyvinyl ether as a base oil, the rotary compressor comprising:a cylinder, having a freon inlet and a freon outlet; a rotary shaft, having a crank installed on an axis of the cylinder; a roller, installed between the crank and the cylinder, and eccentrically rotating; and a vane, reciprocating within a groove formed in the cylinder, and being in sliding contact with an outer circumference of the roller, wherein the sliding contact portion between the vane and the roller has a radius of curvature Rv satisfying the following formula: T