| 摘要 |
The invention relates to a vane pump which comprises a pump housing (10) in which a rotor (20) is mounted. Said rotor comprises a plurality of grooves (24) distributed across its periphery and at least extending substantially radially in relation to the rotational axis (13) of the rotor (20), a respective vane-type conveying element (26) being displaceably guided in said grooves. Housing end walls (14, 16) of the pump housing (10) adjoin the rotor (20) in the direction of its rotational axis (13). In at least one of the housing end walls (14, 16), an annular groove (38) surrounding the rotational axis (13) of the rotor (20) is configured. Said annular groove is opposite the inner areas (25) defined by the vanes (26) in the grooves (24) of the rotor (20) and is linked with the pressure area (32, 34) via a connecting groove (40) in the housing end wall (14, 16). The annular groove (38) extends off-center from the rotational axis (13) of the rotor (20). |
