A slim pump according to the present invention includes a frame, a shaft-coupling portion, a stator, and an impeller. The frame includes an interior separated by a partitioning board into a first chamber and a second chamber. A flow inlet intercommunicates with the first chamber and a flow outlet intercommunicates with the second chamber. The first chamber is intercommunicated with the second chamber via a communication hole of the partitioning board. The shaft-coupling portion is located in the frame. The stator is disposed around the shaft-coupling portion and is located within an axial extent of the first chamber. The stator is axially aligned with the communication hole. The impeller includes a plurality of blades and an inlet opening located in the second chamber. The inlet opening faces and axially aligns with the communication hole.

An integrated flow source is a limiting factor in numerous microfluidic applications. In addition to precise gradients and controlling molecular transports, a built-in source of stable and accurate flow can enable novel shear stress modulations for long-term cell culturing studies. The Tesla turbine, when used as a pump on the microfluidic regime, produces stable and accurate fluid gradients by utilizing laminar flow between its rotating discs Utilizing a stereolithography based 3D printer, a tesla pump (Ø10 cm) and associated housing capable of driving a microfluidic gradient is provided having a printed rotor surface topology of the pump in order to enhance pumping of biological fluids like blood at elevated viscosities. The surface topology is tuned via 3D pixilation, and this modulation completely recovered the pressure loss between pumping water at 1 cP versus glycerol solution at 3 cP. As a result, increased fluid viscosities, and even Non-Newtonian viscosities, can be used.

The present invention relates to a reinforcing structure of a pump casing accommodating an impeller. A pump casing (8) includes: a volute hydro structure (22) having a discharge port (22a); a suction hydro structure (20) having a suction port (20a); and a rib (30) connected to outer surfaces of the volute hydro structure (22) and the suction hydro structure (20). The rib (30) has a curved outer edge (30A) which is curved toward the inside of the rib (30), and the curved outer edge (30A) is smoothly connected to the outermost peripheral surface (20b) of the suction hydro structure (20). A ratio of a radius of curvature (R1) of the curved outer edge (30A) to a radius of curvature (R2) of the outermost peripheral surface (20b) of the suction hydro structure (20) is 20% or more.

A liquid-cooling pump and a flow channel structure thereof are disclosed. The flow channel structure includes a liquid pump mounting chamber. A bottom of the liquid pump mounting chamber is centrally formed with a liquid inlet. A peripheral side of the liquid pump mounting chamber is formed with a liquid outlet. An inner wall of the peripheral side of the liquid pump mounting chamber is convexly provided with a protruding boss corresponding to one side of the liquid outlet and surrounding an impeller, and is concavely provided with a guide groove corresponding to another side of the liquid outlet and surrounding the impeller. The protruding boss is gradually thinned along a rotating direction of the impeller. The guide groove is gradually deepened along the rotating direction of the impeller and communicates with the liquid outlet.

A pump features a trimmed impeller having a trimmed impeller diameter that is less than a standard full-sized diameter of a standard full-sized impeller for a standard full-sized casing, and having a circumferential outer edge; and a modified standard full-sized casing having dimensions corresponding to the standard full-sized casing and configured to house the trimmed impeller for pumping a fluid, having an outer peripheral wall, and having an inner annular volute portion between the circumferential outer edge of the trimmed impeller and the outer peripheral wall configured with a volume of material deposited using an additive manufacturing process so as to fill in vacant space otherwise caused by the trimmed impeller diameter being less than the standard full-sized impeller diameter. The additive manufacturing process is a directed energy deposition.

An impeller pump for a dishwasher has a pump housing comprising a pump upper portion, pump lower portion and pump outer wall in which a pump chamber is arranged. It has a pump inlet into the pump housing and a pump outlet out of the pump housing and a heating device, which forms the pump outer wall, and a pump drive having a drive rotor, a drive stator having a stator winding and a bearing shaft. The bearing shaft is fixedly arranged on the pump housing and the drive rotor is fixedly connected to the drive rotor and they are rotatably arranged on the bearing shaft. The stator winding is arranged on a region of the pump lower portion which adjoins the pump chamber at the other side thereof in an outward radial direction so that between the pump chamber and stator winding only one wall of the pump lower portion extends so that the stator winding is surrounded by the pump chamber in an annular manner. It can thus be effectively cooled by water in the pump chamber.

A pump assembly for use within a high pressure pumping system includes housing, a head and a base. The housing contains at least one centrifugal pump stage. The head and base are attached to the housing with corresponding internal threaded connections. The head and base are further retained to the housing with corresponding external flanged connections. The external flanged connections provide redundant connections that reduce the risk of separation between the housing and the head and base.

A water pump with an impeller driven by an electrical machine comprising a housing cap and a volute with an inlet) and an outlet and a boot hosting a stator and a rotor of the electrical machine, wherein the rotor is mounted on a fixed shaft in the water pump having a bushing rotatable mounted on the shaft.

In one aspect, a pump is provided comprising a motor configured to rotate a shaft that is operably coupled to an impeller. The impeller is housed within a fluid chamber having an inlet and a discharge in fluid communication with the inlet. The fluid chamber further includes an outlet in a top portion thereof for venting air within the fluid chamber when the impeller is rotated by the motor. In other forms, a pump assembly is provided with an internal float switch integrated into the pump housing.

A downhole tool includes an electric submersible pump to pump a well fluid to a surface of a borehole. The downhole tool includes a motor to power the electric submersible pump and a seal section to protect the motor from the well fluid. The seal section includes an elastomeric bag and a clamp at each end of the elastomeric bag to secure the elastomeric bag. The seal section includes an elastomeric bag protector secured around each clamp, wherein the elastomeric bag protector extends axially beyond a respective clamp to surround a tapered portion of the elastomeric bag above and below the clamp, and wherein the elastomeric bag protector has a sloped inner diameter that matches a profile of the tapered portion.