Patent ID: 6296440
Filing Date: 2001-10-02
Classification: F04D,F05B

Abstract:
Side-channel centrifugal pump having a housing which forms a side channel (1) and whose surface which is adjacent to the side channel (1) forms a front face (13) which is contiguous to the impeller except for a narrow gap, the transition edge (2, 3, 7) from the side channel (1) to the front face (13) being rounded in those regions where it deviates from the circumferential direction, and having an impeller whose vanes (16) have a predetermined web width in the circumferential direction in the front plane of the impeller, characterized in that the radius (15) of the transition edge (7) in the region where the vanes (16) of the impeller emerge from the region of the front face (13, 14) and pass into the region of the side channel (1) is greater than 0.25 sec/m times the product of the web width and vane speed.