Frideco Ag

Carl Stähle

Robles Ciro

The pump rotor () comprises a first blade (), wherein the first blade () comprises a first helical-gear blade part () and, adjoining the latter, a first centrifugal-wheel blade part (), and said pump rotor () comprises a hub () with a rotational axis (D), wherein the centrifugal-wheel blade part () is fixedly connected to the hub (), wherein at least one second blade () is provided which comprises a second helical-gear blade part () and, adjoining the latter, a second centrifugal-wheel blade part (), wherein the first and the second blades () have in each case one outer edge (), wherein a connecting means () connects the first and second blades () to one another in the region of the outer edge (), and wherein the second centrifugal-wheel blade part () is arranged so as to run relative to the hub () in such a way that an opening () which runs continuously in the rotational direction (D) is formed between said second centrifugal-wheel blade part () and hub (), since the second centrifugal-wheel blade part () is not directly connected to the hub ().

Growing community of inventors

Neunkirch, Switzerland

Carl Stähle