Patent ID: 8998594
Filing Date: 2015-04-07
Classification: F01C,F04C

Abstract:
1. A vane cell pump having a pump housing and a rotor shaft, wherein the rotor shaft comprises a drive shaft mounted in the pump housing and a hollow rotor shaft connected with the drive shaft, wherein in certain regions, radial bearing grooves are disposed in the wall of the hollow rotor shaft, vane plates that project radially through the hollow rotor shaft are mounted in radially displaceable manner in the radial bearing grooves, wherein the hollow rotor shaft with the vane plates is enclosed by a cylinder mantle of an inner cylinder, wherein the inner cylinder is disposed in a setting slide that is mounted in the pump housing to be displaceable or pivotable along predetermined paths, wherein the vane cell pump has an inflow channel disposed in the pump housing, wherein at least one inflow kidney disposed in at least one side wall of the pump housing on one or both sides of the setting slide empties into the inflow channel, wherein the vane cell pump has an outflow channel also disposed in the pump housing, wherein a cylinder guide is disposed in the hollow rotor shaft, wherein a freely circulating synchronization cylinder is guided in the cylinder guide, wherein vane-shaped vane plate guide crosspieces having crosspiece bearing grooves project beyond the hollow rotor shaft radially by 0.75 to 1.8 times the diameter of the synchronization cylinder in the region of the crosspiece bearing grooves, are assigned to the radial bearing grooves of the hollow rotor shaft, and are rigidly disposed on the hollow rotor shaft, in such a manner that the hollow rotor shaft and the vane plate guide crosspieces together form a vane rotor, wherein the vane plates are also disposed in the crosspiece bearing grooves of the vane-shaped vane plate guide crosspieces, wherein the radial bearing grooves of the hollow rotor shaft lie in the plane of the crosspiece bearing grooves of the vane plate guide crosspieces, in each instance, and make a transition into the crosspiece bearing grooves, in each instance, in such a manner that the vane plates reach all the way into the cylinder guide and lie both against the synchronization cylinder on an inside of the vane plates and against the inner cylinder of the setting slide on an outside of the vane plates, wherein at least one continuous outflow opening that runs radial to the inner cylinder is disposed in the setting slide, and wherein the at least one continuous outflow opening lies opposite the at least one inflow kidney disposed in the at least one side wall of the pump housing.