Abstract: A centrifugal pump with a hydrodynamic bearing and a double involute is disclosed. Some embodiments may include an impeller housing comprising a fluid entrance to allow fluid to enter and an impeller located within the impeller housing, the impeller comprising a plurality of impeller blades, a plurality of fluid channels between the impeller blades, and a motor magnet. The impeller may rotate within the impeller housing about a pump centerline in response to an electromagnetic field and the fluid channels may each allow fluid to pass through when the impeller rotates. Embodiments may also include one or more hydrodynamic bearings positioned between the impeller and the impeller housing to support generated loads and a double involute coupled with the impeller housing and positioned to receive fluid exiting the plurality of fluid channels. Further embodiments may include a motor stator to generate the electromagnetic field. Other embodiments are disclosed and claimed.

Abstract: According to some embodiments, an apparatus includes a housing, a hub, and a plurality of airfoils, each of the plurality of airfoils having a leading edge, a trailing edge, a first end, and a second end, wherein the first end of each of the plurality of airfoils is fixedly coupled to the hub and wherein the second end of each of the plurality of airfoils is fixedly coupled to the housing.