Micro-axial pump having asymmetrical stator teeth

Abstract

An axial pump for delivering liquid coolant to cool an electronic device comprises a conduit, an impeller in the conduit, a shaft, a rotor, and a stator. The conduit defines a flow path from an inlet of the conduit to an outlet of the conduit. The rotor is disposed in a hollow interior of the impeller and is rotatably coupled to the shaft. The stator is configured to drive rotation of the rotor about the shaft, with the impeller rotating along with the rotor about an axis of rotation extending parallel to the flow path. The stator comprises teeth that are heterogenous in shape, resulting in an asymmetrical stator, and reducing magnetic sticking of the rotor when powered off. A set of first stator teeth has a first profile shape and a set of second stator teeth have a second profile shape.

Dependencies are inferred from the claim text.