Rotary vane compressor

The invention discloses a rotary vane compressor and relates to a rotary vane compressor for a vehicle air conditioner, in particular to a rotary vane compressor for an air conditioner on a sedan car, an SUV, a mini bus and a light/heavy truck. The compressor comprises a cylinder body, a rotor, vanes, a front end cover and a back end cover, wherein symmetrical working cavities are formed by the center line of the cylinder body and the contour in the cylinder body; and on any cross section of each working cavity, a first circular arc section contour, a first vane extension section contour, a second circular arc section contour, a first vane constriction section contour, a third circular arc section contour, a fourth circular arc section contour, a second vane extension section contour, a fifth circular arc section contour, a second vane constriction section contour and a sixth circular arc section contour are sequentially distributed along the contour of a rotor angle of 0-360 degrees in the counterclockwise direction, and the tail end of each section contour form smooth connection with the head end of the adjacent contour. The compressor increases the displacement, improves the compression efficiency and the volume efficiency, ensures that the moving speed and acceleration of the vanes are not subject to sudden change, realizes that the vanes do not impact the cylinder body and simultaneously improves the sealability between the cylinder body and the rotor.