752results about "Circumferential flow pumps" patented technology

The present invention relates generally to systems and methods for facilitating the movement of fluids, transferring mechanical power to fluid mediums, as well as deriving power from moving fluids. The present invention employs an impeller system in a variety of applications involving the displacement of fluids, including for example, any conventional pumps, fans, compressors, generators, circulators, blowers, generators, turbines, transmissions, various hydraulic and pneumatic systems, and the like.

A cooling fan is provided that does not place limitations on the installation conditions for the fan, is capable of cooling a backlight unit of a display panel with high efficiency, and produces less noise during operation. Also provided is an image display apparatus equipped with the cooling fan. The cooling fan includes a fan rotator composed of a rotational shaft that is rotationally driven by a driving motor and two vanes that have parallel revolution shafts that rotate together with the rotational shaft, are freely rotatable on the shafts, face one another, and revolve around the rotational shafts and a vane angle control unit that implements control so that each vane has a maximum rotation angle when a revolution angle of the vanes is in a vicinity of a first revolution angle and each vane has a rotation angle of 0° when a revolution angle of the vane is in a vicinity of a second revolution angle that is perpendicular to the first revolution angle. By rotating the fan rotator, a wind in a single direction perpendicular to the rotational shaft is generated to cool a back light unit of a flat panel display, for example.

An electric pump (1) comprises a pump section (3) drawing a fluid into the pump compartment (11), a motor section (2) including a rotatable armature (14) in the motor compartment (10) driving the pump section (3). The pump (1) also comprises an outlet port (45) allowing a drawn and pressurized fluid to be discharged to the outside of the pump (1), and a communicating opening (48) discharging a portion of the fuel from the pump section (3) into the motor compartment (10). The fluid from the pump compartment (11) is discharged directly from the outlet port (45), not through the motor compartment (10). The portion of the fluid from the pump section (3) flows into the motor compartment (10) via the communicating opening (48), and is finally discharged from the second outlet port (30) after passing through the motor compartment (10).

A bulk materials pump feeder having a housing and a rotating drive rotor for transferring material from an inlet to an outlet of the housing. The drive rotor has a hub. Drive disks extend away from the hub toward a housing inner wall. Three structural features of the feeder reduce the tendency of material to jam between the drive rotor and the housing or other stationary parts. First, the distance between the circumferential edges of the drive disks and the housing inner wall increases from the inlet to the outlet in the direction of rotation of the drive rotor. Second, a low-friction brush seal disposed on the periphery of the drive disks seals the area between the periphery of the drive disks and the inner wall. Finally, a materials scraper having a flexible tip is mounted in the housing and extends into the drive rotor between the drive disks.