Flow-optimised vane pump

A vane pump for conveying liquids, comprising:

• a rotor having sliding slits into which slidable vanes are accommodated and retractable with respect to a rotational axis of the rotor;
• a pump housing having a pump chamber encompassing the rotor and an inner contour comprising a hollow cylinder that is excentric with respect to the rotational axis of the rotor or has at least a radial raising with respect to the rotational axis of the rotor such that vane cells that respectively take up a revolving partial volume of the pump chamber between two adjacent vanes pass through a volume increase and a volume decrease as a function of the inner contour of the pump chamber;
• and
• an inlet in a rotational angle range of the volume increase and an outlet in the rotational angle range of the volume decrease which each open at least towards a face side of the rotor into the pump chamber;
• wherein across the circumference of the rotor, radial raisings protruding from the rotor towards the sliding slits form a rotor radius to each side of the retractable vanes, and, between the radial raisings, radial pockets are recessed with respect to the rotational axis of the rotor;
• wherein within the radial raisings at at least one face side of the rotor, to which the inlet and the outlet open, a recess is formed.