Compressor

The compressor comprises a static scroll plate and a movable scroll plate, the molded line center line point, corresponding to the meshing position of the movable scroll plate and the static scroll plate at the beginning of exhaust of the compressor, of the movable scroll plate is D, and the spread angle corresponding to the point D is phi D; the movable scroll plate profile point corresponding to the interference angle of the tool circle of the movable scroll plate profile tooth form and the movable scroll plate profile tooth form is S, the spread angle corresponding to the S point is phi S, the radian of the starting angle of the movable scroll plate profile involute is alpha, and phi S and phi D meet the relational expression that phi D = phi s-alpha + 3pi. Therefore, by designing the parameter relation between the point corresponding spread angles on the molded line of the movable scroll plate, the compression ratio of the compressor can be improved, the machining difficulty can be reduced, and the refrig