Patent ID: 8511966
Filing Date: 2013-08-20
Classification: F04D

Abstract:
1. A pump rotor comprising: a first vane, wherein the first vane includes a first helical wheel vane part and a first centrifugal wheel vane part adjoining said first helical wheel vane part, a hub having an axis of rotation, wherein the first centrifugal wheel vane part is fixedly connected to the hub and rotates thereabout in a direction of rotation, and at least one second vane comprising a second helical wheel vane part and a second centrifugal vane part adjoining said second helical wheel vane part, wherein the first and the second vanes each have an outer edge, and wherein a connection means connects the first and the second vanes to one another in the region of the outer edge, wherein the hub forms a frustoconical or disk-shaped base part which extends less than 360 degrees around the hub and along a pitch angle in the direction of rotation; wherein the first centrifugal wheel vane part is fixedly connected to the base part; and wherein the second centrifugal wheel vane part is arranged at a distance away from the hub such that a throughgoing gap, extending around the hub in the direction of rotation, is formed between the second centrifugal wheel vane part and the hub because the second centrifugal wheel vane part is not directly connected to the hub.