Patent ID: 6033190
Filing Date: 2000-03-07
Classification: F04C

Abstract:
A vane cell pump for pumping a pressure fluid from a container to a consumer, which pump comprises:a housing composed of a bearing housing and a cup-shaped housing cap, and having a pressure-fluid-filled interior;a rotor set located in the pressure-fluid-filled interior of the housing and including a cam ring in which a rotor provided with radially oriented slots is rotatably mounted;vanes displaceably inserted in the radially oriented slots of the rotor such that the cam ring, the rotor and the vanes form work chambers which are defined in the axial direction by control faces of adjacent control plates;a drive shaft braced in an axial direction on the housing cap and which supports the rotor in the housing;disposed in the bearing housing are a suction connection for connecting the container to the vane cell pump, a pressure connection for connecting the consumer to the vane cell pump, a flow regulating valve for regulating the pressure fluid pumped to the pressure connection, a pressure limiting valve, and suction and pressure conduits which connect the work chambers to the suction connection, the flow regulating valve and the pressure limiting valve;the improvement comprising:the bearing housing includes a substantially flat face opposite the housing cap and the housing cap has a substantially flat face opposite the bearing housing such that the flat faces of the bearing housing and the housing cap face one another;the housing cap is centered relative to the bearing housing solely by means of screws which mate the flat face of the housing cap to the flat face of the bearing housing;the drive shaft is supported in the radial direction by the bearing housing and not by the housing cap;the cam ring is centered solely relative to the bearing housing; andthe interior of the housing of the vane cell pump is sealed off by a seal disposed between the substantially flat faces of the bearing housing and housing cap.